| | | 1 | | // Copyright (c) NexusLabs. All rights reserved. |
| | | 2 | | // Licensed under the MIT License. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | |
| | | 6 | | namespace NexusLabs.Needlr; |
| | | 7 | | |
| | | 8 | | /// <summary> |
| | | 9 | | /// Static registry for source-generated registrations. |
| | | 10 | | /// </summary> |
| | | 11 | | /// <remarks> |
| | | 12 | | /// <para> |
| | | 13 | | /// This class provides a decoupling layer between the core Needlr runtime and the |
| | | 14 | | /// source-generated bootstrap code. The source generator emits a module initializer |
| | | 15 | | /// that registers callbacks here, and the <c>ConfiguredSyringe</c> calls these |
| | | 16 | | /// callbacks during <c>BuildServiceProvider</c>. |
| | | 17 | | /// </para> |
| | | 18 | | /// <para> |
| | | 19 | | /// This allows <c>NexusLabs.Needlr.Injection</c> to have no dependency on |
| | | 20 | | /// <c>NexusLabs.Needlr.Generators.Attributes</c>. |
| | | 21 | | /// </para> |
| | | 22 | | /// </remarks> |
| | | 23 | | public static class SourceGenRegistry |
| | | 24 | | { |
| | 8 | 25 | | private static readonly object _gate = new(); |
| | | 26 | | |
| | | 27 | | private static Action<object, object>? _optionsRegistrar; |
| | | 28 | | private static Action<object, object>? _extensionRegistrar; |
| | | 29 | | |
| | | 30 | | /// <summary> |
| | | 31 | | /// Registers the options registrar from source-generated code. |
| | | 32 | | /// </summary> |
| | | 33 | | /// <param name="registrar"> |
| | | 34 | | /// Action that registers options. Parameters are (IServiceCollection, IConfiguration), |
| | | 35 | | /// typed as object to avoid package dependencies. |
| | | 36 | | /// </param> |
| | | 37 | | public static void RegisterOptionsRegistrar(Action<object, object> registrar) |
| | | 38 | | { |
| | 6 | 39 | | lock (_gate) |
| | | 40 | | { |
| | 6 | 41 | | var prior = _optionsRegistrar; |
| | 6 | 42 | | if (prior == null) |
| | | 43 | | { |
| | 6 | 44 | | _optionsRegistrar = registrar; |
| | | 45 | | } |
| | | 46 | | else |
| | | 47 | | { |
| | 0 | 48 | | _optionsRegistrar = (services, config) => |
| | 0 | 49 | | { |
| | 0 | 50 | | prior(services, config); |
| | 0 | 51 | | registrar(services, config); |
| | 0 | 52 | | }; |
| | | 53 | | } |
| | 0 | 54 | | } |
| | 6 | 55 | | } |
| | | 56 | | |
| | | 57 | | /// <summary> |
| | | 58 | | /// Registers an extension registrar from extension packages. |
| | | 59 | | /// </summary> |
| | | 60 | | /// <param name="registrar"> |
| | | 61 | | /// Action that registers extension services. Parameters are (IServiceCollection, IConfiguration), |
| | | 62 | | /// typed as object to avoid package dependencies. |
| | | 63 | | /// </param> |
| | | 64 | | public static void RegisterExtension(Action<object, object> registrar) |
| | | 65 | | { |
| | 3 | 66 | | lock (_gate) |
| | | 67 | | { |
| | 3 | 68 | | var prior = _extensionRegistrar; |
| | 3 | 69 | | if (prior == null) |
| | | 70 | | { |
| | 3 | 71 | | _extensionRegistrar = registrar; |
| | | 72 | | } |
| | | 73 | | else |
| | | 74 | | { |
| | 0 | 75 | | _extensionRegistrar = (services, config) => |
| | 0 | 76 | | { |
| | 0 | 77 | | prior(services, config); |
| | 0 | 78 | | registrar(services, config); |
| | 0 | 79 | | }; |
| | | 80 | | } |
| | 0 | 81 | | } |
| | 3 | 82 | | } |
| | | 83 | | |
| | | 84 | | /// <summary> |
| | | 85 | | /// Gets the options registrar if one is registered. |
| | | 86 | | /// </summary> |
| | | 87 | | public static bool TryGetOptionsRegistrar(out Action<object, object>? registrar) |
| | | 88 | | { |
| | 492 | 89 | | lock (_gate) |
| | | 90 | | { |
| | 492 | 91 | | registrar = _optionsRegistrar; |
| | 492 | 92 | | return registrar != null; |
| | | 93 | | } |
| | 492 | 94 | | } |
| | | 95 | | |
| | | 96 | | /// <summary> |
| | | 97 | | /// Gets the extension registrar if one is registered. |
| | | 98 | | /// </summary> |
| | | 99 | | public static bool TryGetExtensionRegistrar(out Action<object, object>? registrar) |
| | | 100 | | { |
| | 492 | 101 | | lock (_gate) |
| | | 102 | | { |
| | 492 | 103 | | registrar = _extensionRegistrar; |
| | 492 | 104 | | return registrar != null; |
| | | 105 | | } |
| | 492 | 106 | | } |
| | | 107 | | |
| | | 108 | | /// <summary> |
| | | 109 | | /// Clears all registrations. For testing purposes only. |
| | | 110 | | /// </summary> |
| | | 111 | | internal static void Clear() |
| | | 112 | | { |
| | 0 | 113 | | lock (_gate) |
| | | 114 | | { |
| | 0 | 115 | | _optionsRegistrar = null; |
| | 0 | 116 | | _extensionRegistrar = null; |
| | 0 | 117 | | } |
| | 0 | 118 | | } |
| | | 119 | | } |