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added some more utility to JsonTypeSafeWrapper and revert SetData changes
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ae559adf26
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3 changed files with 31 additions and 9 deletions
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@ -16,21 +16,21 @@ namespace MLEM.Data.Json {
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private Dictionary<string, JsonTypeSafeWrapper> data;
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/// <inheritdoc />
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public void SetData<T>(string key, T data) {
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if (EqualityComparer<T>.Default.Equals(data, default)) {
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public void SetData(string key, object data) {
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if (data == default) {
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if (this.data != null)
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this.data.Remove(key);
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} else {
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if (this.data == null)
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this.data = new Dictionary<string, JsonTypeSafeWrapper>();
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this.data[key] = new JsonTypeSafeWrapper<T>(data);
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this.data[key] = JsonTypeSafeWrapper.Of(data);
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}
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}
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/// <inheritdoc />
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public T GetData<T>(string key) {
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if (this.data != null && this.data.TryGetValue(key, out var val))
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return (T) val.Value;
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return val.GetValue<T>();
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return default;
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}
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@ -8,7 +8,7 @@ namespace MLEM.Data.Json {
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/// A json type-safe wrapper can be used to wrap any objects of any type before submitting them to a non-specifically typed <see cref="List{T}"/> or <see cref="Dictionary{T,T}"/> that will be serialized using a <see cref="JsonSerializer"/> in cases where <see cref="JsonSerializer.TypeNameHandling"/> is not set to <see cref="TypeNameHandling.None"/>.
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/// If any object is not wrapped in this manner, and it has a custom <see cref="JsonConverter"/>, the value deserialized from it might not have the same type as the originally serialized object. This behavior can be observed, for example, when serializing a <see cref="List{T}"/> of <see cref="object"/> entries, one of which is a <see cref="TimeSpan"/>: The <see cref="TimeSpan"/> will be serialized as a <see cref="string"/> and, upon deserialization, will remain a <see cref="string"/>.
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/// In general, wrapping objects in this manner is only useful in rare cases, where custom data of an unexpected or unknown type is stored.
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/// See <see cref="JsonTypeSafeGenericDataHolder"/> for an example of how this class and <see cref="JsonTypeSafeWrapper{T}"/> can be used, and see this stackoverflow answer for more information on the problem that this class solves: https://stackoverflow.com/a/38798114.
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/// See <see cref="JsonTypeSafeGenericDataHolder"/> for an example of how this class can be used, and see this stackoverflow answer for more information on the problem that this class solves: https://stackoverflow.com/a/38798114.
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/// </summary>
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public abstract class JsonTypeSafeWrapper {
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@ -17,6 +17,28 @@ namespace MLEM.Data.Json {
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/// </summary>
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public abstract object Value { get; }
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/// <summary>
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/// Returns the current <see cref="Value"/> of this <see cref="JsonTypeSafeWrapper"/>, typecast to the given type <typeparamref name="T"/>.
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/// If this <see cref="Value"/>'s type is incompatible with the given type, the type's default value is returned instead.
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/// </summary>
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/// <typeparam name="T">The type of value to return</typeparam>
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/// <returns>The <see cref="Value"/>, castt to the given type if compatible, otherwise default</returns>
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public T GetValue<T>() {
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return this.Value is T t ? t : default;
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}
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/// <summary>
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/// Creates a new <see cref="JsonTypeSafeWrapper{T}"/> from the given value.
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/// The type parameter of the returned wrapper will be equal to the <see cref="Type"/> of the <paramref name="value"/> passed.
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/// If a <see cref="JsonTypeSafeWrapper{T}"/> for a specific type, known at comepile type, should be created, you can use <see cref="JsonTypeSafeWrapper{T}(T)"/>.
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/// </summary>
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/// <param name="value">The value to wrap</param>
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/// <returns>A <see cref="JsonTypeSafeWrapper{T}"/> with a type matching the type of <paramref name="value"/></returns>
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public static JsonTypeSafeWrapper Of(object value) {
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var type = typeof(JsonTypeSafeWrapper<>).MakeGenericType(value.GetType());
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return (JsonTypeSafeWrapper) Activator.CreateInstance(type, value);
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}
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}
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/// <inheritdoc />
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@ -30,6 +52,7 @@ namespace MLEM.Data.Json {
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/// <summary>
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/// Creates a new json type-safe wrapper instance that wraps the given <paramref name="value"/>.
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/// If the type of the value is unknown at compile time, <see cref="JsonTypeSafeWrapper.Of"/> can be used instead.
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/// </summary>
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/// <param name="value">The value to wrap</param>
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public JsonTypeSafeWrapper(T value) {
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@ -11,8 +11,8 @@ namespace MLEM.Misc {
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private Dictionary<string, object> data;
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/// <inheritdoc />
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public void SetData<T>(string key, T data) {
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if (EqualityComparer<T>.Default.Equals(data, default)) {
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public void SetData(string key, object data) {
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if (data == default) {
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if (this.data != null)
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this.data.Remove(key);
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} else {
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@ -49,8 +49,7 @@ namespace MLEM.Misc {
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/// </summary>
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/// <param name="key">The key to store the data by</param>
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/// <param name="data">The data to store in the object</param>
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/// <typeparam name="T">The type of the data to store</typeparam>
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void SetData<T>(string key, T data);
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void SetData(string key, object data);
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/// <summary>
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/// Returns a piece of generic data of the given type on this object.
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