예제 #1
0
파일: Melua.cs 프로젝트: xyfc/Melua
        public void userdata()
        {
            var L = Melua.luaL_newstate();

            Melua.melua_opensafelibs(L);

            var n1 = 0;

            // Ctor
            Melua.luaL_register(L, "Test", new[]
            {
                new MeluaLib.Melua.LuaLib("new", NL =>
                {
                    var test = new UserDataTest()
                    {
                        N1 = 1234
                    };
                    var size = Marshal.SizeOf(test);

                    var ptr = Melua.lua_newuserdata(L, size);
                    Melua.luaL_getmetatable(L, "Melua.Test");
                    Melua.lua_setmetatable(L, -2);

                    Marshal.StructureToPtr(test, ptr, true);

                    return(1);
                })
            });

            // Meta table for test userdata type
            Melua.luaL_newmetatable(L, "Melua.Test");
            Melua.lua_pushstring(L, "__index");
            Melua.lua_pushvalue(L, -2);
            Melua.lua_settable(L, -3);

            Melua.luaL_register(L, null, new[]
            {
                new MeluaLib.Melua.LuaLib("setN1", _ =>
                {
                    var ptr = Melua.luaL_checkudata(L, 1, "Melua.Test");
                    var val = Melua.luaL_checkinteger(L, 2);

                    // Either marshal back and forth or use unsafe
                    var test = (UserDataTest)Marshal.PtrToStructure(ptr, typeof(UserDataTest));
                    test.N1  = val;
                    Marshal.StructureToPtr(test, ptr, true);

                    //unsafe
                    //{
                    //	var test = (UserDataTest*)ptr;
                    //	test->N1 = val;
                    //}

                    return(0);
                }),
                new MeluaLib.Melua.LuaLib("getN1", _ =>
                {
                    var ptr  = Melua.luaL_checkudata(L, 1, "Melua.Test");
                    var test = (UserDataTest)Marshal.PtrToStructure(ptr, typeof(UserDataTest));

                    Melua.lua_pushinteger(L, test.N1);

                    return(1);
                })
            });

            // Test method
            Melua.melua_register(L, "testgetn1", _ =>
            {
                n1 = Melua.lua_tointeger(L, -1);

                return(0);
            });

            var result = Melua.luaL_dostring(L, @"
local t = Test.new()
t:setN1(5678)
testgetn1(t:getN1())
");

            if (result != 0)
            {
                throw new Exception(Melua.lua_tostring(L, -1));
            }

            Assert.Equal(n1, 5678);
        }