generated/runtime/Customizations/IJsonSerializable.cs
|
/*--------------------------------------------------------------------------------------------- * Copyright (c) Microsoft Corporation. All rights reserved. * Licensed under the MIT License. See License.txt in the project root for license information. *--------------------------------------------------------------------------------------------*/ using Commvault.Powershell.Runtime.Json; using System; namespace Commvault.Powershell.Runtime { public interface IJsonSerializable { JsonNode ToJson(JsonObject container = null, SerializationMode serializationMode = SerializationMode.None); } internal static class JsonSerializable { /// <summary> /// Serializes an enumerable and returns a JsonNode. /// </summary> /// <param name="enumerable">an IEnumerable collection of items</param> /// <returns>A JsonNode that contains the collection of items serialized.</returns> private static JsonNode ToJsonValue(System.Collections.IEnumerable enumerable) { if (enumerable != null) { // is it a byte array of some kind? if (enumerable is System.Collections.Generic.IEnumerable<byte> byteEnumerable) { return new XBinary(System.Linq.Enumerable.ToArray(byteEnumerable)); } var hasValues = false; // just create an array of value nodes. var result = new XNodeArray(); foreach (var each in enumerable) { // we had at least one value. hasValues = true; // try to serialize it. var node = ToJsonValue(each); if (null != node) { result.Add(node); } } // if we were able to add values, (or it was just empty), return it. if (result.Count > 0 || !hasValues) { return result; } } // we couldn't serialize the values. Sorry. return null; } /// <summary> /// Serializes a valuetype to a JsonNode. /// </summary> /// <param name="vValue">a <c>ValueType</c> (ie, a primitive, enum or struct) to be serialized </param> /// <returns>a JsonNode with the serialized value</returns> private static JsonNode ToJsonValue(ValueType vValue) { // numeric type if (vValue is SByte || vValue is Int16 || vValue is Int32 || vValue is Int64 || vValue is Byte || vValue is UInt16 || vValue is UInt32 || vValue is UInt64 || vValue is decimal || vValue is float || vValue is double) { return new JsonNumber(vValue.ToString()); } // boolean type if (vValue is bool bValue) { return new JsonBoolean(bValue); } // dates if (vValue is DateTime dtValue) { return new JsonDate(dtValue); } // sorry, no idea. return null; } /// <summary> /// Attempts to serialize an object by using ToJson() or ToJsonString() if they exist. /// </summary> /// <param name="oValue">the object to be serialized.</param> /// <returns>the serialized JsonNode (if successful), otherwise, <c>null</c></returns> private static JsonNode TryToJsonValue(dynamic oValue) { object jsonValue = null; dynamic v = oValue; try { jsonValue = v.ToJson().ToString(); } catch { // no harm... try { jsonValue = v.ToJsonString().ToString(); } catch { // no worries here either. } } // if we got something out, let's use it. if (null != jsonValue) { // JsonNumber is really a literal json value. Just don't try to cast that back to an actual number, ok? return new JsonNumber(jsonValue.ToString()); } return null; } /// <summary> /// Serialize an object by using a variety of methods. /// </summary> /// <param name="oValue">the object to be serialized.</param> /// <returns>the serialized JsonNode (if successful), otherwise, <c>null</c></returns> internal static JsonNode ToJsonValue(object value) { // things that implement our interface are preferred. if (value is Commvault.Powershell.Runtime.IJsonSerializable jsonSerializable) { return jsonSerializable.ToJson(); } // strings are easy. if (value is string || value is char) { return new JsonString(value.ToString()); } // value types are fairly straightforward (fallback to ToJson()/ToJsonString() or literal JsonString ) if (value is System.ValueType vValue) { return ToJsonValue(vValue) ?? TryToJsonValue(vValue) ?? new JsonString(vValue.ToString()); } // dictionaries are objects that should be able to serialize if (value is System.Collections.Generic.IDictionary<string, object> dictionary) { return Commvault.Powershell.Runtime.JsonSerializable.ToJson(dictionary, null); } // enumerable collections are handled like arrays (again, fallback to ToJson()/ToJsonString() or literal JsonString) if (value is System.Collections.IEnumerable enumerableValue) { // some kind of enumerable value return ToJsonValue(enumerableValue) ?? TryToJsonValue(value) ?? new JsonString(value.ToString()); } // at this point, we're going to fallback to a string literal here, since we really have no idea what it is. return new JsonString(value.ToString()); } internal static JsonObject ToJson<T>(System.Collections.Generic.Dictionary<string, T> dictionary, JsonObject container) => ToJson((System.Collections.Generic.IDictionary<string, T>)dictionary, container); /// <summary> /// Serializes a dictionary into a JsonObject container. /// </summary> /// <param name="dictionary">The dictionary to serailize</param> /// <param name="container">the container to serialize the dictionary into</param> /// <returns>the container</returns> internal static JsonObject ToJson<T>(System.Collections.Generic.IDictionary<string, T> dictionary, JsonObject container) { container = container ?? new JsonObject(); if (dictionary != null && dictionary.Count > 0) { foreach (var key in dictionary) { // currently, we don't serialize null values. if (null != key.Value) { container.Add(key.Key, ToJsonValue(key.Value)); continue; } } } return container; } internal static Func<JsonObject, System.Collections.Generic.IDictionary<string, V>> DeserializeDictionary<V>(Func<System.Collections.Generic.IDictionary<string, V>> dictionaryFactory) { return (node) => FromJson<V>(node, dictionaryFactory(), (object)(DeserializeDictionary(dictionaryFactory)) as Func<JsonObject, V>); } internal static System.Collections.Generic.IDictionary<string, V> FromJson<V>(JsonObject json, System.Collections.Generic.Dictionary<string, V> container, System.Func<JsonObject, V> objectFactory, System.Collections.Generic.HashSet<string> excludes = null) => FromJson(json, (System.Collections.Generic.IDictionary<string, V>)container, objectFactory, excludes); internal static System.Collections.Generic.IDictionary<string, V> FromJson<V>(JsonObject json, System.Collections.Generic.IDictionary<string, V> container, System.Func<JsonObject, V> objectFactory, System.Collections.Generic.HashSet<string> excludes = null) { if (null == json) { return container; } foreach (var key in json.Keys) { if (true == excludes?.Contains(key)) { continue; } var value = json[key]; try { switch (value.Type) { case JsonType.Null: // skip null values. continue; case JsonType.Array: case JsonType.Boolean: case JsonType.Date: case JsonType.Binary: case JsonType.Number: case JsonType.String: container.Add(key, (V)value.ToValue()); break; case JsonType.Object: if (objectFactory != null) { var v = objectFactory(value as JsonObject); if (null != v) { container.Add(key, v); } } break; } } catch { } } return container; } } } |