| | | 1 | | using System.Collections; |
| | | 2 | | using System.Dynamic; |
| | | 3 | | using Elsa.Extensions; |
| | | 4 | | using Jint; |
| | | 5 | | using Jint.Native; |
| | | 6 | | using Jint.Native.Object; |
| | | 7 | | |
| | | 8 | | namespace Elsa.Expressions.JavaScript.Helpers; |
| | | 9 | | |
| | | 10 | | internal static class ObjectConverterHelper |
| | | 11 | | { |
| | | 12 | | public static object? ProcessVariableValue(Engine engine, object? variableValue) |
| | | 13 | | { |
| | 16 | 14 | | if (variableValue == null) |
| | 1 | 15 | | return null; |
| | | 16 | | |
| | 15 | 17 | | if (variableValue is not ExpandoObject expandoObject) |
| | 7 | 18 | | return variableValue; |
| | | 19 | | |
| | 8 | 20 | | return ConvertToJsObject(engine, expandoObject); |
| | | 21 | | } |
| | | 22 | | |
| | | 23 | | public static ObjectInstance ConvertToJsObject(Engine engine, IDictionary<string, object?> expando) |
| | | 24 | | { |
| | | 25 | | // CreateFromEntries defines the same writable, enumerable and configurable properties the explicit |
| | | 26 | | // descriptor used to spell out, but builds the object directly in the engine's hidden-class |
| | | 27 | | // representation rather than filling a per-object property dictionary. Two wins, both within a single |
| | | 28 | | // evaluation: it drops the second descriptor allocation the explicit one caused inside Jint's |
| | | 29 | | // ValidateAndApplyPropertyDescriptor, and objects presenting the same keys — sibling variables, and the |
| | | 30 | | // nested objects of a repeated payload shape — share one layout instead of each carrying its own |
| | | 31 | | // descriptors. Nothing carries across evaluations: hidden classes are interned per engine and Elsa |
| | | 32 | | // builds a fresh engine every time. |
| | 29 | 33 | | return JsObject.CreateFromEntries(engine, expando.Select(kvp => new KeyValuePair<string, JsValue>(kvp.Key, Conve |
| | | 34 | | } |
| | | 35 | | |
| | | 36 | | private static JsValue ConvertToJsValue(Engine engine, object? value) |
| | | 37 | | { |
| | 24 | 38 | | if (value == null) |
| | 0 | 39 | | return JsValue.Null; |
| | | 40 | | |
| | 24 | 41 | | if (value is IDictionary<string, object?> dict) |
| | 0 | 42 | | return ConvertToJsObject(engine, dict); |
| | | 43 | | |
| | 24 | 44 | | var valueType = value.GetType(); |
| | 24 | 45 | | if (valueType.IsCollectionType()) |
| | | 46 | | { |
| | 1 | 47 | | var list = (ICollection)value; |
| | 1 | 48 | | var jsArray = engine.Intrinsics.Array.Construct(list.Count); |
| | 1 | 49 | | var index = 0; |
| | | 50 | | |
| | 8 | 51 | | foreach (var item in list) |
| | 3 | 52 | | jsArray.Set(index++, ConvertToJsValue(engine, item), true); |
| | | 53 | | |
| | 1 | 54 | | return jsArray; |
| | | 55 | | } |
| | | 56 | | |
| | 23 | 57 | | if (value is string str) |
| | 9 | 58 | | return JsValue.FromObject(engine, str); |
| | | 59 | | |
| | 14 | 60 | | if (value is int or double or float or decimal) |
| | 9 | 61 | | return JsValue.FromObject(engine, Convert.ToDouble(value)); |
| | | 62 | | |
| | 5 | 63 | | if (value is bool b) |
| | 0 | 64 | | return JsValue.FromObject(engine, b); |
| | | 65 | | |
| | 5 | 66 | | return JsValue.FromObject(engine, value); |
| | | 67 | | } |
| | | 68 | | } |