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Made fields and methods in StaticJsonConverter protected to allow extending it
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2 changed files with 41 additions and 12 deletions
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@ -31,6 +31,10 @@ Additions
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Fixes
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- Fixed tooltips not being bounded correctly for viewports that don't start at the origin
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### MLEM.Data
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Improvements
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- Made fields and methods in StaticJsonConverter protected to allow extending it
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## 7.1.1
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### MLEM
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@ -15,19 +15,30 @@ namespace MLEM.Data.Json {
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/// <typeparam name="T">The type of the object to convert</typeparam>
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public class StaticJsonConverter<T> : JsonConverter<T> {
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private readonly Dictionary<string, T> entries;
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private readonly Dictionary<T, string> inverse;
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private readonly bool throwOnRead;
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/// <summary>
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/// The entries, or registry, that this static json converter uses.
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/// </summary>
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protected readonly Dictionary<string, T> Entries;
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/// <summary>
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/// The inverse of this static json converter's <see cref="Entries"/>, mapping the values to their respective keys.
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/// Note that this dictionary is only created once and is not automatically updated should the <see cref="Entries"/> be modified.
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/// </summary>
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protected readonly Dictionary<T, string> Inverse;
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/// <summary>
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/// Whether to throw a <see cref="KeyNotFoundException"/> in <see cref="ReadJson"/> if a key is missing, or throw a <see cref="JsonSerializationException"/> if a stored json value is not a string.
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/// If this is <see langword="false"/>, <see cref="ReadJson"/> returns <see langword="default"/> instead.
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/// </summary>
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protected readonly bool ThrowOnRead;
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/// <summary>
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/// Creates a new static json converter using the given underlying <see cref="Dictionary{T,T}"/>.
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/// </summary>
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/// <param name="entries">The dictionary to use</param>
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/// <param name="entries">The entries, or registry, that this static json converter uses.</param>
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/// <param name="throwOnRead">Whether to throw a <see cref="KeyNotFoundException"/> in <see cref="ReadJson"/> if a key is missing, or throw a <see cref="JsonSerializationException"/> if a stored json value is not a string. If this is <see langword="false"/>, <see cref="ReadJson"/> returns <see langword="default"/> instead.</param>
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public StaticJsonConverter(Dictionary<string, T> entries, bool throwOnRead = false) {
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this.entries = entries;
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this.inverse = StaticJsonConverter<T>.CreateInverse(entries);
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this.throwOnRead = throwOnRead;
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this.Entries = entries;
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this.Inverse = StaticJsonConverter<T>.CreateInverse(entries);
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this.ThrowOnRead = throwOnRead;
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}
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/// <summary>
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@ -62,7 +73,7 @@ namespace MLEM.Data.Json {
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writer.WriteNull();
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return;
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}
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if (!this.inverse.TryGetValue(value, out var key))
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if (!this.Inverse.TryGetValue(value, out var key))
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throw new KeyNotFoundException($"Cannot write {value} that is not a registered entry");
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writer.WriteValue(key);
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}
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@ -78,16 +89,24 @@ namespace MLEM.Data.Json {
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if (reader.Value == null)
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return default;
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if (reader.TokenType != JsonToken.String) {
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if (this.throwOnRead)
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if (this.ThrowOnRead)
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throw new JsonSerializationException($"Expected a string value for {reader.Value}, got a {reader.TokenType}");
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return default;
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}
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if (!this.entries.TryGetValue((string) reader.Value, out var ret) && this.throwOnRead)
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if (!this.Entries.TryGetValue((string) reader.Value, out var ret) && this.ThrowOnRead)
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throw new KeyNotFoundException($"Could not find registered entry for {reader.Value}");
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return ret;
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}
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private static Dictionary<string, T> GetEntries(
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/// <summary>
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/// Returns the entries, or registry, that this static json converter should use, using reflection to find the passed <paramref name="memberName"/> in the passed <paramref name="type"/>.
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/// </summary>
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/// <param name="type">The type to find the entries in.</param>
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/// <param name="memberName">The name of the field or property that the entries are in within the given <paramref name="type"/>.</param>
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/// <returns>The found property or field's value.</returns>
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/// <exception cref="ArgumentException">Thrown if there is no property or field with the <paramref name="memberName"/> in the given <paramref name="type"/>.</exception>
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/// <exception cref="InvalidCastException">Thrown if the value of the <paramref name="memberName"/> is not of the expected type.</exception>
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protected static Dictionary<string, T> GetEntries(
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#if NET6_0_OR_GREATER
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[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties | DynamicallyAccessedMemberTypes.NonPublicProperties | DynamicallyAccessedMemberTypes.PublicFields | DynamicallyAccessedMemberTypes.NonPublicFields)]
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#endif
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@ -99,7 +118,13 @@ namespace MLEM.Data.Json {
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return value as Dictionary<string, T> ?? throw new InvalidCastException($"{value} is not of expected type {typeof(T)}");
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}
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private static Dictionary<T, string> CreateInverse(Dictionary<string, T> entries) {
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/// <summary>
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/// Creates the inverse version of the passed <paramref name="entries"/>, mapping the values to their keys, and throws an exception if there are any duplicate values.
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/// </summary>
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/// <param name="entries">The entries to create an inverse of.</param>
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/// <returns>The inverse of the given <paramref name="entries"/>, mapping the values to their keys.</returns>
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/// <exception cref="ArgumentException">Thrown if the <paramref name="entries"/> contains duplicate values, making it impossible to create a valid inverse.</exception>
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protected static Dictionary<T, string> CreateInverse(Dictionary<string, T> entries) {
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var ret = new Dictionary<T, string>();
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foreach (var entry in entries) {
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if (ret.ContainsKey(entry.Value))
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