99 lines
3.8 KiB
C#
99 lines
3.8 KiB
C#
using System;
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using System.Reflection;
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using System.Diagnostics.CodeAnalysis;
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namespace NLua
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{
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public static class LuaRegistrationHelper
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{
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#region Tagged instance methods
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/// <summary>
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/// Registers all public instance methods in an object tagged with <see cref="LuaGlobalAttribute"/> as Lua global functions
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/// </summary>
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/// <param name="lua">The Lua VM to add the methods to</param>
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/// <param name="o">The object to get the methods from</param>
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public static void TaggedInstanceMethods(Lua lua, object o)
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{
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#region Sanity checks
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if (lua == null)
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throw new ArgumentNullException(nameof(lua));
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if (o == null)
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throw new ArgumentNullException(nameof(o));
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#endregion
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foreach (var method in o.GetType().GetMethods(BindingFlags.Instance | BindingFlags.Public))
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{
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foreach (LuaGlobalAttribute attribute in method.GetCustomAttributes(typeof(LuaGlobalAttribute), true))
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{
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if (string.IsNullOrEmpty(attribute.Name))
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lua.RegisterFunction(method.Name, o, method); // CLR name
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else
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lua.RegisterFunction(attribute.Name, o, method); // Custom name
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}
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}
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}
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#endregion
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#region Tagged static methods
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/// <summary>
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/// Registers all public static methods in a class tagged with <see cref="LuaGlobalAttribute"/> as Lua global functions
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/// </summary>
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/// <param name="lua">The Lua VM to add the methods to</param>
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/// <param name="type">The class type to get the methods from</param>
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public static void TaggedStaticMethods(Lua lua, Type type)
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{
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#region Sanity checks
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if (lua == null)
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throw new ArgumentNullException(nameof(lua));
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if (type == null)
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throw new ArgumentNullException(nameof(type));
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if (!type.IsClass)
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throw new ArgumentException("The type must be a class!", nameof(type));
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#endregion
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foreach (var method in type.GetMethods(BindingFlags.Static | BindingFlags.Public))
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{
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foreach (LuaGlobalAttribute attribute in method.GetCustomAttributes(typeof(LuaGlobalAttribute), false))
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{
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if (string.IsNullOrEmpty(attribute.Name))
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lua.RegisterFunction(method.Name, null, method); // CLR name
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else
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lua.RegisterFunction(attribute.Name, null, method); // Custom name
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}
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}
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}
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#endregion
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/// <summary>
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/// Registers an enumeration's values for usage as a Lua variable table
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/// </summary>
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/// <typeparam name="T">The enum type to register</typeparam>
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/// <param name="lua">The Lua VM to add the enum to</param>
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[SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter", Justification = "The type parameter is used to select an enum type")]
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public static void Enumeration<T>(Lua lua)
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{
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if (lua == null)
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throw new ArgumentNullException(nameof(lua));
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Type type = typeof(T);
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if (!type.IsEnum)
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throw new ArgumentException("The type must be an enumeration!");
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string[] names = Enum.GetNames(type);
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var values = (T[])Enum.GetValues(type);
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lua.NewTable(type.Name);
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for (int i = 0; i < names.Length; i++)
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{
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string path = type.Name + "." + names[i];
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lua.SetObjectToPath(path, values[i]);
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}
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}
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}
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}
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