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| 1 | +// Copyright (c) 2024 Li Shuangquan. All Rights Reserved. |
| 2 | +// |
| 3 | +// Licensed under the MIT License (the "License"); you may not use this file |
| 4 | +// except in compliance with the License. You may obtain a copy of the License |
| 5 | +// at |
| 6 | +// |
| 7 | +// http://opensource.org/licenses/MIT |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | +// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | +// License for the specific language governing permissions and limitations |
| 13 | +// under the License. |
| 14 | + |
| 15 | +#include "main.h" |
| 16 | + |
| 17 | +namespace { |
| 18 | + |
| 19 | +struct Obj { |
| 20 | + int i = 1; |
| 21 | + Obj() {} |
| 22 | + Obj(const Obj &r) : i(r.i) {} |
| 23 | + Obj(Obj &&r) : i(r.i) { r.i = -1; } |
| 24 | + ~Obj() {} |
| 25 | +}; |
| 26 | + |
| 27 | +TEST(luaw_function, type_check) { |
| 28 | + (void)luaw::function<void(int)>{}; |
| 29 | + (void)luaw::function<void(const int)>{}; |
| 30 | + // (void)luaw::function<void( int &)>{}; // error |
| 31 | + (void)luaw::function<void(const int &)>{}; |
| 32 | + (void)luaw::function<void(int &&)>{}; |
| 33 | + (void)luaw::function<void(const int &&)>{}; |
| 34 | + |
| 35 | + (void)luaw::function<int()>{}; |
| 36 | + // (void)luaw::function<int &()>{}; // error |
| 37 | + // (void)luaw::function<int && ()>{}; // error |
| 38 | + (void)luaw::function<std::tuple<int, int>()>{}; |
| 39 | + // (void)luaw::function<std::tuple<int &, int>()>{}; // error |
| 40 | + |
| 41 | + (void)luaw::function<void(luaw::luavalueref)>{}; |
| 42 | + (void)luaw::function<void(const luaw::luavalueref &)>{}; |
| 43 | + (void)luaw::function<void(luaw::luavalueref &&)>{}; |
| 44 | + |
| 45 | + (void)luaw::function<luaw::luavalueref()>{}; |
| 46 | + // (void)luaw::function<luaw::luavalueref &()>{}; // error |
| 47 | + // (void)luaw::function<const luaw::luavalueref &()>{}; // error |
| 48 | + |
| 49 | + (void)luaw::function<luaw::luavalueref(luaw::luavalueidx)>{}; |
| 50 | +} |
| 51 | + |
| 52 | +TEST(luaw_function, arg_can_copy_can_move) { |
| 53 | + luaw l; |
| 54 | + EXPECT_EQ(l.dostring("function echo(o) return o; end"), LUA_OK); |
| 55 | + |
| 56 | + { |
| 57 | + Obj o; |
| 58 | + // Will get a copy of o |
| 59 | + auto echo = l.get<luaw::function<luaw::luavalueref(const Obj &)>>("echo"); |
| 60 | + auto ref = echo(o); |
| 61 | + EXPECT_FALSE(echo.failed()); |
| 62 | + l.push(ref); |
| 63 | + Obj *p = l.to<Obj *>(-1); |
| 64 | + EXPECT_NE(p, &o); |
| 65 | + l.cleartop(); |
| 66 | + } |
| 67 | + { |
| 68 | + Obj o; |
| 69 | + // Will get a copy of the pointer |
| 70 | + auto echo = l.get<luaw::function<luaw::luavalueref(Obj *)>>("echo"); |
| 71 | + auto ref = echo(&o); |
| 72 | + EXPECT_FALSE(echo.failed()); |
| 73 | + l.push(ref); |
| 74 | + Obj *p = l.to<Obj *>(-1); |
| 75 | + EXPECT_EQ(p, &o); |
| 76 | + l.cleartop(); |
| 77 | + } |
| 78 | + { |
| 79 | + Obj a; |
| 80 | + EXPECT_EQ(a.i, 1); |
| 81 | + Obj b = std::move(a); |
| 82 | + EXPECT_EQ(b.i, 1); |
| 83 | + EXPECT_EQ(a.i, -1); |
| 84 | + } |
| 85 | + { |
| 86 | + // Move o |
| 87 | + Obj o; |
| 88 | + o.i = 123; |
| 89 | + EXPECT_EQ(o.i, 123); |
| 90 | + auto echo = l.get<luaw::function<luaw::luavalueref(Obj &&)>>("echo"); |
| 91 | + auto ref = echo(std::move(o)); |
| 92 | + EXPECT_FALSE(echo.failed()); |
| 93 | + EXPECT_EQ(o.i, -1); |
| 94 | + |
| 95 | + l.push(ref); |
| 96 | + Obj *p = l.to<Obj *>(-1); |
| 97 | + EXPECT_EQ(p->i, 123); |
| 98 | + EXPECT_NE(p, &o); |
| 99 | + l.cleartop(); |
| 100 | + } |
| 101 | + { |
| 102 | + // Move o |
| 103 | + Obj o; |
| 104 | + o.i = 123; |
| 105 | + EXPECT_EQ(o.i, 123); |
| 106 | + auto echo = l.get<luaw::function<luaw::luavalueref(Obj)>>("echo"); |
| 107 | + auto ref = echo(std::move(o)); |
| 108 | + EXPECT_FALSE(echo.failed()); |
| 109 | + EXPECT_EQ(o.i, -1); |
| 110 | + |
| 111 | + l.push(ref); |
| 112 | + Obj *p = l.to<Obj *>(-1); |
| 113 | + EXPECT_EQ(p->i, 123); |
| 114 | + EXPECT_NE(p, &o); |
| 115 | + l.cleartop(); |
| 116 | + } |
| 117 | +} |
| 118 | + |
| 119 | +TEST(luaw_function, arg_ref) { |
| 120 | + luaw l; |
| 121 | + EXPECT_EQ(l.dostring("function echo(o) return o; end"), LUA_OK); |
| 122 | + |
| 123 | + // perfect echo |
| 124 | + auto echo = |
| 125 | + l.get<luaw::function<luaw::luavalueref(luaw::luavalueref)>>("echo"); |
| 126 | + |
| 127 | + l.set("o", Obj{}); |
| 128 | + auto oref = l.get<luaw::luavalueref>("o"); |
| 129 | + auto ret = echo(oref); |
| 130 | + EXPECT_FALSE(echo.failed()); |
| 131 | + |
| 132 | + l.push(oref); |
| 133 | + Obj *a = l.to<Obj *>(-1); |
| 134 | + l.push(ret); |
| 135 | + Obj *b = l.to<Obj *>(-1); |
| 136 | + l.cleartop(); |
| 137 | + |
| 138 | + // same obj |
| 139 | + EXPECT_EQ(a, b); |
| 140 | + |
| 141 | + l.cleartop(); |
| 142 | +} |
| 143 | + |
| 144 | +TEST(luaw_function, no_result) { |
| 145 | + luaw l; |
| 146 | + EXPECT_EQ(l.dostring("function f(o) end"), LUA_OK); |
| 147 | + |
| 148 | + auto f = l.get<luaw::function<int(int)>>("f"); |
| 149 | + int ret = f(1); |
| 150 | + EXPECT_TRUE(f.failed()); |
| 151 | + EXPECT_TRUE(!f.result_exists()); |
| 152 | + EXPECT_TRUE(!f.result_enough()); |
| 153 | + EXPECT_EQ(f.expected_result_size(), 1); |
| 154 | + EXPECT_EQ(f.real_result_size(), 0); |
| 155 | +} |
| 156 | + |
| 157 | +TEST(luaw_function, result_not_enough) { |
| 158 | + luaw l; |
| 159 | + EXPECT_EQ(l.dostring("function f(o) return o; end"), LUA_OK); |
| 160 | + |
| 161 | + auto f = l.get<luaw::function<std::tuple<int, int>(int)>>("f"); |
| 162 | + auto ret = f(1); |
| 163 | + EXPECT_TRUE(f.failed()); |
| 164 | + EXPECT_TRUE(f.result_exists()); |
| 165 | + EXPECT_TRUE(!f.result_enough()); |
| 166 | + EXPECT_TRUE(!f.result_failed()); // not fail, just not enough |
| 167 | + EXPECT_EQ(f.expected_result_size(), 2); |
| 168 | + EXPECT_EQ(f.real_result_size(), 1); |
| 169 | + |
| 170 | + EXPECT_EQ(std::get<0>(ret), 1); |
| 171 | +} |
| 172 | + |
| 173 | +TEST(luaw_function, expect_0_result) { |
| 174 | + luaw l; |
| 175 | + EXPECT_EQ(l.dostring("function f(o) return o; end"), LUA_OK); |
| 176 | + { |
| 177 | + auto f = l.get<luaw::function<std::tuple<>(int)>>("f"); |
| 178 | + auto ret = f(1); |
| 179 | + EXPECT_EQ(std::tuple_size<decltype(ret)>(), 0); |
| 180 | + EXPECT_TRUE(!f.failed()); |
| 181 | + |
| 182 | + EXPECT_TRUE(f.result_enough()); |
| 183 | + EXPECT_TRUE(f.result_exists()); |
| 184 | + EXPECT_FALSE(f.result_failed()); |
| 185 | + |
| 186 | + EXPECT_EQ(f.expected_result_size(), 0); |
| 187 | + EXPECT_EQ(f.real_result_size(), 1); |
| 188 | + } |
| 189 | + { |
| 190 | + auto f = l.get<luaw::function<void(int)>>("f"); |
| 191 | + f(1); |
| 192 | + EXPECT_TRUE(!f.failed()); |
| 193 | + |
| 194 | + EXPECT_TRUE(f.result_enough()); |
| 195 | + EXPECT_TRUE(f.result_exists()); |
| 196 | + EXPECT_FALSE(f.result_failed()); |
| 197 | + |
| 198 | + EXPECT_EQ(f.expected_result_size(), 0); |
| 199 | + EXPECT_EQ(f.real_result_size(), 1); |
| 200 | + } |
| 201 | +} |
| 202 | + |
| 203 | +TEST(luaw_function, modify_arg) { |
| 204 | + luaw l; |
| 205 | + l.register_member("i", &Obj::i); |
| 206 | + |
| 207 | + int retcode = l.dostring(R"( |
| 208 | + function f(o) |
| 209 | + o.i = o.i + 100 |
| 210 | + return o |
| 211 | + end |
| 212 | + )"); |
| 213 | + |
| 214 | + { |
| 215 | + auto f = l.get<peacalm::luaw::function<Obj(Obj)>>("f"); |
| 216 | + Obj o; |
| 217 | + EXPECT_EQ(o.i, 1); |
| 218 | + Obj ret = f(o); |
| 219 | + EXPECT_FALSE(f.failed()); |
| 220 | + EXPECT_EQ(o.i, 1); |
| 221 | + EXPECT_EQ(ret.i, 101); |
| 222 | + } |
| 223 | + |
| 224 | + { |
| 225 | + auto f = l.get<peacalm::luaw::function<Obj(Obj *)>>("f"); |
| 226 | + Obj o; |
| 227 | + EXPECT_EQ(o.i, 1); |
| 228 | + Obj ret = f(&o); |
| 229 | + EXPECT_FALSE(f.failed()); |
| 230 | + EXPECT_EQ(o.i, 101); |
| 231 | + EXPECT_EQ(ret.i, 101); |
| 232 | + } |
| 233 | +} |
| 234 | + |
| 235 | +TEST(luaw_function, map_as_table) { |
| 236 | + luaw l; |
| 237 | + int retcode = l.dostring(R"( |
| 238 | + function f(o) |
| 239 | + o.a = 1 |
| 240 | + o.b = 2 |
| 241 | + return o |
| 242 | + end |
| 243 | + )"); |
| 244 | + EXPECT_EQ(retcode, LUA_OK); |
| 245 | + |
| 246 | + using map_t = std::map<std::string, int>; |
| 247 | + |
| 248 | + auto f = l.get<peacalm::luaw::function<map_t(map_t &&)>>("f"); |
| 249 | + |
| 250 | + map_t m{{"b", -1}, {"c", -1}}; |
| 251 | + |
| 252 | + // Won't move to full userdata, because will construct a table by m. |
| 253 | + // So, m will not be cleared. |
| 254 | + auto ret = f(std::move(m)); |
| 255 | + |
| 256 | + EXPECT_FALSE(f.failed()); |
| 257 | + |
| 258 | + EXPECT_EQ(m.size(), 2); |
| 259 | + EXPECT_EQ(m["a"], 0); |
| 260 | + EXPECT_EQ(m["b"], -1); |
| 261 | + EXPECT_EQ(m["c"], -1); |
| 262 | + |
| 263 | + EXPECT_EQ(ret.size(), 3); |
| 264 | + EXPECT_EQ(ret["a"], 1); |
| 265 | + EXPECT_EQ(ret["b"], 2); |
| 266 | + EXPECT_EQ(ret["c"], -1); |
| 267 | +} |
| 268 | + |
| 269 | +} // namespace |
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