112 lines
2.9 KiB
C#
112 lines
2.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using Eluant;
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using Eluant.ObjectBinding;
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namespace OpenRA.Scripting
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{
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public abstract class ScriptObjectWrapper : IScriptBindable, ILuaTableBinding
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{
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protected abstract string DuplicateKeyError(string memberName);
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protected abstract string MemberNotFoundError(string memberName);
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protected readonly ScriptContext Context;
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readonly Dictionary<string, ScriptMemberWrapper> members = new();
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#if !NET5_0_OR_GREATER
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readonly List<string> membersToRemove = new List<string>();
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#endif
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protected ScriptObjectWrapper(ScriptContext context)
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{
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Context = context;
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}
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protected static object[] CreateObjects(Type[] types, object[] constructorArgs)
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{
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var i = 0;
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var argTypes = new Type[constructorArgs.Length];
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foreach (var ca in constructorArgs)
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argTypes[i++] = ca.GetType();
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var objects = new object[types.Length];
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i = 0;
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foreach (var type in types)
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objects[i++] = type.GetConstructor(argTypes).Invoke(constructorArgs);
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return objects;
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}
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protected void Bind(object[] clrObjects)
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{
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members.Clear();
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foreach (var obj in clrObjects)
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{
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var wrappable = ScriptMemberWrapper.WrappableMembers(obj.GetType());
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foreach (var m in wrappable)
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{
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if (members.ContainsKey(m.Name))
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throw new LuaException(DuplicateKeyError(m.Name));
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members.Add(m.Name, new ScriptMemberWrapper(Context, obj, m));
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}
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}
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}
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protected void Unbind(Type targetType)
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{
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#if NET5_0_OR_GREATER
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// NOTE: In newer versions of .NET modifying the collection by calling Remove while iterating over it is valid
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foreach (var m in members)
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if (targetType == m.Value.Target.GetType())
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members.Remove(m.Key);
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#else
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// PERF: Re-use instead of allocating a new list on each unbind
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membersToRemove.Clear();
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foreach (var m in members)
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if (targetType == m.Value.Target.GetType())
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membersToRemove.Add(m.Key);
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foreach (var m in membersToRemove)
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members.Remove(m);
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#endif
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}
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public bool ContainsKey(string key) { return members.ContainsKey(key); }
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public LuaValue this[LuaRuntime runtime, LuaValue keyValue]
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{
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get
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{
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var name = keyValue.ToString();
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if (!members.TryGetValue(name, out var wrapper))
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throw new LuaException(MemberNotFoundError(name));
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return wrapper.Get(runtime);
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}
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set
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{
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var name = keyValue.ToString();
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if (!members.TryGetValue(name, out var wrapper))
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throw new LuaException(MemberNotFoundError(name));
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wrapper.Set(value);
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}
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}
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}
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}
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