[6174] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15584] | 3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[6174] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.IO;
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| 25 | using System.Linq;
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| 26 | using System.Reflection;
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| 27 | using HeuristicLab.PluginInfrastructure.Manager;
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| 28 |
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| 29 | namespace HeuristicLab.PluginInfrastructure {
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| 30 |
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| 31 | /// <summary>
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| 32 | /// The SandboxApplicationManager provides properties to retrieve the list of available plugins and applications.
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| 33 | /// It also provides methods for type discovery and instantiation for types declared in plugins.
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| 34 | /// The SandboxApplicationManager is used in sandboxed Application Domains where permissions are restricted and
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| 35 | /// only partially-trusted code can be executed.
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| 36 | /// </summary>
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| 37 | internal class SandboxApplicationManager : MarshalByRefObject, IApplicationManager {
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| 38 | /// <summary>
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| 39 | /// Fired when a plugin is loaded.
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| 40 | /// </summary>
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| 41 | internal event EventHandler<PluginInfrastructureEventArgs> PluginLoaded;
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| 42 | /// <summary>
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| 43 | /// Fired when a plugin is unloaded (when the application terminates).
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| 44 | /// </summary>
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| 45 | internal event EventHandler<PluginInfrastructureEventArgs> PluginUnloaded;
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| 46 |
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| 47 | // cache for the AssemblyResolveEvent
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| 48 | // which must be handled when assemblies are loaded dynamically after the application start
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| 49 | protected internal Dictionary<string, Assembly> loadedAssemblies;
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| 50 |
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| 51 | private List<IPlugin> loadedPlugins;
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| 52 |
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| 53 | private List<PluginDescription> plugins;
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| 54 | /// <summary>
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| 55 | /// Gets all plugins.
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| 56 | /// </summary>
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| 57 | public IEnumerable<IPluginDescription> Plugins {
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| 58 | get { return plugins.Cast<IPluginDescription>(); }
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| 59 | }
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| 60 |
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| 61 | private List<ApplicationDescription> applications;
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| 62 | /// <summary>
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| 63 | /// Gets all installed applications.
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| 64 | /// </summary>
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| 65 | public IEnumerable<IApplicationDescription> Applications {
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| 66 | get { return applications.Cast<IApplicationDescription>(); }
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| 67 | }
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| 68 |
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| 69 | internal SandboxApplicationManager()
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| 70 | : base() {
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| 71 | loadedAssemblies = new Dictionary<string, Assembly>();
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| 72 | loadedPlugins = new List<IPlugin>();
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| 73 | }
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| 74 |
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| 75 | /// <summary>
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| 76 | /// Prepares the application domain for the execution of an HL application.
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| 77 | /// Pre-loads all <paramref name="plugins"/>.
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| 78 | /// </summary>
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| 79 | /// <param name="apps">Enumerable of available HL applications.</param>
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| 80 | /// <param name="plugins">Enumerable of plugins that should be pre-loaded.</param>
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| 81 | internal void PrepareApplicationDomain(IEnumerable<ApplicationDescription> apps, IEnumerable<PluginDescription> plugins) {
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| 82 | this.plugins = new List<PluginDescription>(plugins);
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| 83 | this.applications = new List<ApplicationDescription>(apps);
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| 84 | ApplicationManager.RegisterApplicationManager(this);
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| 85 | LoadPlugins(plugins);
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| 86 | }
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| 87 |
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| 88 | /// <summary>
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| 89 | /// Loads the <paramref name="plugins"/> into this application domain.
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| 90 | /// </summary>
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| 91 | /// <param name="plugins">Enumerable of plugins that should be loaded.</param>
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| 92 | private void LoadPlugins(IEnumerable<PluginDescription> plugins) {
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| 93 | // load all loadable plugins (all dependencies available) into the execution context
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| 94 | foreach (var desc in PluginDescriptionIterator.IterateDependenciesBottomUp(plugins.Where(x => x.PluginState != PluginState.Disabled))) {
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| 95 | foreach (string fileName in desc.AssemblyLocations) {
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| 96 | // load assembly reflection only first to get the full assembly name
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| 97 | var reflectionOnlyAssembly = Assembly.ReflectionOnlyLoadFrom(fileName);
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| 98 | // load the assembly into execution context using full assembly name
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| 99 | var asm = Assembly.Load(reflectionOnlyAssembly.FullName);
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| 100 | RegisterLoadedAssembly(asm);
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| 101 | // instantiate and load all plugins in this assembly
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| 102 | foreach (var plugin in GetInstances<IPlugin>(asm)) {
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| 103 | plugin.OnLoad();
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| 104 | loadedPlugins.Add(plugin);
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| 105 | }
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| 106 | }
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| 107 | OnPluginLoaded(new PluginInfrastructureEventArgs(desc));
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| 108 | desc.Load();
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | /// <summary>
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| 113 | /// Runs the application declared in <paramref name="appInfo"/>.
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| 114 | /// This is a synchronous call. When the application is terminated all plugins are unloaded.
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| 115 | /// </summary>
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| 116 | /// <param name="appInfo">Description of the application to run</param>
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[8818] | 117 | internal void Run(ApplicationDescription appInfo, ICommandLineArgument[] args) {
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[6174] | 118 | IApplication runnablePlugin = (IApplication)Activator.CreateInstance(appInfo.DeclaringAssemblyName, appInfo.DeclaringTypeName).Unwrap();
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| 119 | try {
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[8818] | 120 | runnablePlugin.Run(args);
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[7586] | 121 | }
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| 122 | finally {
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[6174] | 123 | // unload plugins in reverse order
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| 124 | foreach (var plugin in loadedPlugins.Reverse<IPlugin>()) {
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| 125 | plugin.OnUnload();
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| 126 | }
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| 127 | foreach (var desc in PluginDescriptionIterator.IterateDependenciesBottomUp(plugins.Where(x => x.PluginState != PluginState.Disabled))) {
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| 128 | desc.Unload();
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| 129 | OnPluginUnloaded(new PluginInfrastructureEventArgs(desc));
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| 130 | }
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| 131 | }
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| 132 | }
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| 133 |
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| 134 | // register assembly in the assembly cache for the AssemblyResolveEvent
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| 135 | private void RegisterLoadedAssembly(Assembly asm) {
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| 136 | if (loadedAssemblies.ContainsKey(asm.FullName) || loadedAssemblies.ContainsKey(asm.GetName().Name)) {
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| 137 | throw new ArgumentException("An assembly with the name " + asm.GetName().Name + " has been registered already.", "asm");
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| 138 | }
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| 139 | loadedAssemblies.Add(asm.FullName, asm);
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| 140 | loadedAssemblies.Add(asm.GetName().Name, asm); // add short name
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| 141 | }
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| 142 |
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| 143 | /// <summary>
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| 144 | /// Creates an instance of all types that are subtypes or the same type of the specified type and declared in <paramref name="plugin"/>
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| 145 | /// </summary>
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| 146 | /// <typeparam name="T">Most general type.</typeparam>
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| 147 | /// <returns>Enumerable of the created instances.</returns>
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| 148 | internal static IEnumerable<T> GetInstances<T>(IPluginDescription plugin) where T : class {
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| 149 | List<T> instances = new List<T>();
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[7111] | 150 | foreach (Type t in GetTypes(typeof(T), plugin, onlyInstantiable: true, includeGenericTypeDefinitions: false)) {
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[6174] | 151 | T instance = null;
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[7586] | 152 | try { instance = (T)Activator.CreateInstance(t); }
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| 153 | catch { }
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[6174] | 154 | if (instance != null) instances.Add(instance);
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| 155 | }
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| 156 | return instances;
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| 157 | }
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| 158 | /// <summary>
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| 159 | /// Creates an instance of all types declared in assembly <paramref name="asm"/> that are subtypes or the same type of the specified <typeparamref name="type"/>.
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| 160 | /// </summary>
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| 161 | /// <typeparam name="T">Most general type.</typeparam>
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| 162 | /// <param name="asm">Declaring assembly.</param>
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| 163 | /// <returns>Enumerable of the created instances.</returns>
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| 164 | private static IEnumerable<T> GetInstances<T>(Assembly asm) where T : class {
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| 165 | List<T> instances = new List<T>();
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[7111] | 166 | foreach (Type t in GetTypes(typeof(T), asm, onlyInstantiable: true, includeGenericTypeDefinitions: false)) {
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[6174] | 167 | T instance = null;
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[7586] | 168 | try { instance = (T)Activator.CreateInstance(t); }
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| 169 | catch { }
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[6174] | 170 | if (instance != null) instances.Add(instance);
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| 171 | }
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| 172 | return instances;
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| 173 | }
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| 174 | /// <summary>
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| 175 | /// Creates an instance of all types that are subtypes or the same type of the specified type
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| 176 | /// </summary>
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| 177 | /// <typeparam name="T">Most general type.</typeparam>
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| 178 | /// <returns>Enumerable of the created instances.</returns>
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| 179 | internal static IEnumerable<T> GetInstances<T>() where T : class {
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| 180 | return from i in GetInstances(typeof(T))
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| 181 | select (T)i;
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| 182 | }
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| 183 |
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| 184 | /// <summary>
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| 185 | /// Creates an instance of all types that are subtypes or the same type of the specified type
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| 186 | /// </summary>
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| 187 | /// <param name="type">Most general type.</param>
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| 188 | /// <returns>Enumerable of the created instances.</returns>
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| 189 | internal static IEnumerable<object> GetInstances(Type type) {
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| 190 | List<object> instances = new List<object>();
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[7111] | 191 | foreach (Type t in GetTypes(type, onlyInstantiable: true, includeGenericTypeDefinitions: false)) {
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[6174] | 192 | object instance = null;
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[7586] | 193 | try { instance = Activator.CreateInstance(t); }
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| 194 | catch { }
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[6174] | 195 | if (instance != null) instances.Add(instance);
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| 196 | }
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| 197 | return instances;
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| 198 | }
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| 199 |
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| 200 | /// <summary>
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| 201 | /// Finds all types that are subtypes or equal to the specified type.
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| 202 | /// </summary>
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| 203 | /// <param name="type">Most general type for which to find matching types.</param>
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| 204 | /// <param name="onlyInstantiable">Return only types that are instantiable
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[7111] | 205 | /// <param name="includeGenericTypeDefinitions">Specifies if generic type definitions shall be included</param>
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[6174] | 206 | /// (interfaces, abstract classes... are not returned)</param>
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| 207 | /// <returns>Enumerable of the discovered types.</returns>
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[7111] | 208 | internal static IEnumerable<Type> GetTypes(Type type, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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[6174] | 209 | return from asm in AppDomain.CurrentDomain.GetAssemblies()
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[7111] | 210 | from t in GetTypes(type, asm, onlyInstantiable, includeGenericTypeDefinitions)
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[6174] | 211 | select t;
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| 212 | }
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| 213 |
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[7111] | 214 | internal static IEnumerable<Type> GetTypes(IEnumerable<Type> types, bool onlyInstantiable, bool includeGenericTypeDefinitions, bool assignableToAllTypes) {
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| 215 | IEnumerable<Type> result = GetTypes(types.First(), onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 216 | foreach (Type type in types.Skip(1)) {
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[7111] | 217 | IEnumerable<Type> discoveredTypes = GetTypes(type, onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 218 | if (assignableToAllTypes) result = result.Intersect(discoveredTypes);
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| 219 | else result = result.Union(discoveredTypes);
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| 220 | }
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| 221 | return result;
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| 222 | }
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| 223 |
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| 224 | /// <summary>
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| 225 | /// Finds all types that are subtypes or equal to the specified type if they are part of the given
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| 226 | /// <paramref name="pluginDescription"/>.
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| 227 | /// </summary>
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| 228 | /// <param name="type">Most general type for which to find matching types.</param>
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| 229 | /// <param name="pluginDescription">The plugin the subtypes must be part of.</param>
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| 230 | /// <param name="onlyInstantiable">Return only types that are instantiable
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[7111] | 231 | /// <param name="includeGenericTypeDefinitions">Specifies if generic type definitions shall be included</param>
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[6174] | 232 | /// (interfaces, abstract classes... are not returned)</param>
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| 233 | /// <returns>Enumerable of the discovered types.</returns>
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[7111] | 234 | internal static IEnumerable<Type> GetTypes(Type type, IPluginDescription pluginDescription, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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[6174] | 235 | PluginDescription pluginDesc = (PluginDescription)pluginDescription;
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| 236 | return from asm in AppDomain.CurrentDomain.GetAssemblies()
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[7586] | 237 | where !asm.IsDynamic && !string.IsNullOrEmpty(asm.Location)
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[6174] | 238 | where pluginDesc.AssemblyLocations.Any(location => location.Equals(Path.GetFullPath(asm.Location), StringComparison.CurrentCultureIgnoreCase))
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[7111] | 239 | from t in GetTypes(type, asm, onlyInstantiable, includeGenericTypeDefinitions)
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[6174] | 240 | select t;
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| 241 | }
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| 242 |
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[7111] | 243 | internal static IEnumerable<Type> GetTypes(IEnumerable<Type> types, IPluginDescription pluginDescription, bool onlyInstantiable, bool includeGenericTypeDefinitions, bool assignableToAllTypes) {
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| 244 | IEnumerable<Type> result = GetTypes(types.First(), pluginDescription, onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 245 | foreach (Type type in types.Skip(1)) {
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[7111] | 246 | IEnumerable<Type> discoveredTypes = GetTypes(type, pluginDescription, onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 247 | if (assignableToAllTypes) result = result.Intersect(discoveredTypes);
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| 248 | else result = result.Union(discoveredTypes);
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| 249 | }
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| 250 | return result;
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| 251 | }
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| 252 |
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| 253 | /// <summary>
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| 254 | /// Gets types that are assignable (same of subtype) to the specified type only from the given assembly.
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| 255 | /// </summary>
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| 256 | /// <param name="type">Most general type we want to find.</param>
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| 257 | /// <param name="assembly">Assembly that should be searched for types.</param>
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| 258 | /// <param name="onlyInstantiable">Return only types that are instantiable
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| 259 | /// (interfaces, abstract classes... are not returned)</param>
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[7111] | 260 | /// <param name="includeGenericTypeDefinitions">Specifies if generic type definitions shall be included</param>
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[6174] | 261 | /// <returns>Enumerable of the discovered types.</returns>
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[11922] | 262 | internal static IEnumerable<Type> GetTypes(Type type, Assembly assembly, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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[8571] | 263 | var matchingTypes = from assemblyType in assembly.GetTypes()
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| 264 | let t = assemblyType.BuildType(type)
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| 265 | where t != null
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| 266 | where t.IsSubTypeOf(type)
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| 267 | where !t.IsNonDiscoverableType()
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| 268 | where onlyInstantiable == false || (!t.IsAbstract && !t.IsInterface && !t.HasElementType)
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| 269 | where includeGenericTypeDefinitions || !t.IsGenericTypeDefinition
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| 270 | select t;
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[7069] | 271 |
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[8571] | 272 | return matchingTypes;
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[6174] | 273 | }
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| 274 |
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[11922] | 275 | /// <summary>
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| 276 | /// Discovers all types implementing or inheriting all or any type in <paramref name="types"/> (directly and indirectly) that are declared in the assembly <paramref name="assembly"/>.
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| 277 | /// </summary>
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| 278 | /// <param name="types">The types to discover.</param>
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| 279 | /// <param name="assembly">The declaring assembly.</param>
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| 280 | /// <param name="onlyInstantiable">Return only types that are instantiable (instance, abstract... are not returned)</param>
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| 281 | /// /// <param name="assignableToAllTypes">Specifies if discovered types must implement or inherit all given <paramref name="types"/>.</param>
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| 282 | /// <returns>An enumerable of discovered types.</returns>
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| 283 | internal static IEnumerable<Type> GetTypes(IEnumerable<Type> types, Assembly assembly, bool onlyInstantiable = true, bool includeGenericTypeDefinitions = false, bool assignableToAllTypes = true) {
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| 284 | IEnumerable<Type> result = GetTypes(types.First(), assembly, onlyInstantiable, includeGenericTypeDefinitions);
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| 285 | foreach (Type type in types.Skip(1)) {
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| 286 | IEnumerable<Type> discoveredTypes = GetTypes(type, assembly, onlyInstantiable, includeGenericTypeDefinitions);
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| 287 | if (assignableToAllTypes) result = result.Intersect(discoveredTypes);
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| 288 | else result = result.Union(discoveredTypes);
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| 289 | }
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| 290 | return result;
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| 291 | }
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| 292 |
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[6174] | 293 | private void OnPluginLoaded(PluginInfrastructureEventArgs e) {
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| 294 | if (PluginLoaded != null) PluginLoaded(this, e);
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| 295 | }
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| 296 |
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| 297 | private void OnPluginUnloaded(PluginInfrastructureEventArgs e) {
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| 298 | if (PluginUnloaded != null) PluginUnloaded(this, e);
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| 299 | }
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| 300 |
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| 301 | #region IApplicationManager Members
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| 302 |
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| 303 | IEnumerable<T> IApplicationManager.GetInstances<T>() {
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| 304 | return GetInstances<T>();
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| 305 | }
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| 306 |
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| 307 | IEnumerable<object> IApplicationManager.GetInstances(Type type) {
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| 308 | return GetInstances(type);
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| 309 | }
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| 310 |
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[7111] | 311 | IEnumerable<Type> IApplicationManager.GetTypes(Type type, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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| 312 | return GetTypes(type, onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 313 | }
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[7111] | 314 | IEnumerable<Type> IApplicationManager.GetTypes(IEnumerable<Type> types, bool onlyInstantiable, bool includeGenericTypeDefinitions, bool assignableToAllTypes) {
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| 315 | return GetTypes(types, onlyInstantiable, includeGenericTypeDefinitions, assignableToAllTypes);
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[6174] | 316 | }
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| 317 |
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[7111] | 318 | IEnumerable<Type> IApplicationManager.GetTypes(Type type, IPluginDescription plugin, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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| 319 | return GetTypes(type, plugin, onlyInstantiable, includeGenericTypeDefinitions);
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[6174] | 320 | }
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[7111] | 321 | IEnumerable<Type> IApplicationManager.GetTypes(IEnumerable<Type> types, IPluginDescription plugin, bool onlyInstantiable, bool includeGenericTypeDefinitions, bool assignableToAllTypes) {
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| 322 | return GetTypes(types, plugin, onlyInstantiable, includeGenericTypeDefinitions, assignableToAllTypes);
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[6174] | 323 | }
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| 324 |
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[11922] | 325 | IEnumerable<Type> IApplicationManager.GetTypes(Type type, Assembly assembly, bool onlyInstantiable, bool includeGenericTypeDefinitions) {
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| 326 | return GetTypes(type, assembly, onlyInstantiable, includeGenericTypeDefinitions);
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| 327 | }
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| 328 | IEnumerable<Type> IApplicationManager.GetTypes(IEnumerable<Type> types, Assembly assembly, bool onlyInstantiable, bool includeGenericTypeDefinitions, bool assignableToAllTypes) {
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| 329 | return GetTypes(types, assembly, onlyInstantiable, includeGenericTypeDefinitions, assignableToAllTypes);
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| 330 | }
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| 331 |
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[6174] | 332 | /// <summary>
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| 333 | /// Finds the plugin that declares the <paramref name="type">type</paramref>.
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| 334 | /// </summary>
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| 335 | /// <param name="type">The type of interest.</param>
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| 336 | /// <returns>The description of the plugin that declares the given type or null if the type has not been declared by a known plugin.</returns>
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| 337 | public IPluginDescription GetDeclaringPlugin(Type type) {
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| 338 | if (type == null) throw new ArgumentNullException("type");
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| 339 | foreach (PluginDescription info in Plugins) {
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| 340 | if (info.AssemblyLocations.Contains(Path.GetFullPath(type.Assembly.Location))) return info;
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| 341 | }
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| 342 | return null;
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| 343 | }
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| 344 | #endregion
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| 345 | }
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| 346 | }
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