66 lines
2.3 KiB
C#
66 lines
2.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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namespace Kerobot
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{
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static class ModuleLoader
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{
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private const string LogName = nameof(ModuleLoader);
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/// <summary>
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/// Given the instance configuration, loads all appropriate types from file specified in it.
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/// </summary>
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internal static ReadOnlyCollection<ModuleBase> Load(InstanceConfig conf, Kerobot k)
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{
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var path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location) + Path.DirectorySeparatorChar;
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var modules = new List<ModuleBase>();
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try
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{
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foreach (var file in conf.EnabledAssemblies)
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{
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var a = Assembly.LoadFile(path + file);
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modules.AddRange(LoadModulesFromAssembly(a, k));
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}
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return modules.AsReadOnly();
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}
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catch (Exception ex)
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{
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// TODO better (not lazy) exception handling
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// Possible exceptions:
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// - Errors loading assemblies
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// - Errors finding module paths
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// - Errors creating module instances
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// - Unknown errors
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Console.WriteLine("Module load failed.");
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Console.WriteLine(ex.ToString());
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return null;
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}
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}
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static IEnumerable<ModuleBase> LoadModulesFromAssembly(Assembly asm, Kerobot k)
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{
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var eligibleTypes = from type in asm.GetTypes()
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where !type.IsAssignableFrom(typeof(ModuleBase))
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where type.GetCustomAttribute<KerobotModuleAttribute>() != null
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select type;
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k.InstanceLogAsync(false, LogName,
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$"{asm.FullName} has {eligibleTypes.Count()} usable types:");
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var newmods = new List<ModuleBase>();
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foreach (var t in eligibleTypes)
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{
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var mod = Activator.CreateInstance(t, k);
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k.InstanceLogAsync(false, LogName,
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$"---> Instance created: {t.FullName}");
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newmods.Add((ModuleBase)mod);
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}
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return newmods;
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}
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}
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}
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