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// sol3
// The MIT License (MIT)
// Copyright (c) 2013-2019 Rapptz, ThePhD and contributors
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "sol_test.hpp"
#include <catch.hpp>
#include <unordered_map>
#include <vector>
struct two_things {
int a;
bool b;
};
struct number_shim {
double num = 0;
};
// HEY:
// Don't do this.
// The code below is for sol3 to specialize things,
// not for YOU to specialize things.
// If you customize things in this fashion,
// I will break your code sometime in the future when fixing things.
// Do. Not. Use the designated ADL customization points, or file
// a bug.
namespace sol {
template <>
struct lua_size<two_things> : std::integral_constant<int, 2> {};
template <>
struct lua_type_of<two_things> : std::integral_constant<sol::type, sol::type::poly> {};
template <>
struct lua_type_of<number_shim> : std::integral_constant<sol::type, sol::type::poly> {};
namespace stack {
template <>
struct unqualified_checker<two_things, type::poly> {
template <typename Handler>
static bool check(lua_State* L, int index, Handler&& handler, record& tracking) {
bool success = stack::check<int>(L, index, handler) && stack::check<bool>(L, index + 1, handler);
tracking.use(2);
return success;
}
};
template <>
struct unqualified_getter<two_things> {
static two_things get(lua_State* L, int index, record& tracking) {
int a = stack::get<int>(L, index);
bool b = stack::get<bool>(L, index + 1);
tracking.use(2);
return two_things{ a, b };
}
};
template <>
struct unqualified_pusher<two_things> {
static int push(lua_State* L, const two_things& things) {
int amount = stack::push(L, things.a);
amount += stack::push(L, things.b);
return amount;
}
};
template <>
struct unqualified_checker<number_shim, type::poly> {
template <typename Handler>
static bool check(lua_State* L, int index, Handler&& handler, record& tracking) {
if (!check_usertype<number_shim>(L, index) && !stack::check<double>(L, index)) {
handler(L, index, type_of(L, index), type::userdata, "expected a number_shim or a number");
return false;
}
tracking.use(1);
return true;
}
};
template <>
struct unqualified_getter<number_shim> {
static number_shim get(lua_State* L, int index, record& tracking) {
if (check_usertype<number_shim>(L, index)) {
number_shim& ns = get_usertype<number_shim>(L, index, tracking);
return ns;
}
number_shim ns{};
ns.num = stack::get<double>(L, index, tracking);
return ns;
}
};
} // namespace stack
} // namespace sol
TEST_CASE("customization/split struct", "using the old customization points to handle different kinds of classes") {
sol::state lua;
// Create a pass-through style of function
auto result1 = lua.safe_script("function f ( a, b, c ) return a + c, b end", sol::script_pass_on_error);
REQUIRE(result1.valid());
lua.set_function("g", [](int a, bool b, int c, double d) { return std::make_tuple(a + c, b, d + 2.5); });
// get the function out of Lua
sol::function f = lua["f"];
sol::function g = lua["g"];
two_things thingsf = f(two_things{ 24, true }, 1);
REQUIRE(thingsf.a == 25);
REQUIRE(thingsf.b);
two_things thingsg;
double d;
sol::tie(thingsg, d) = g(two_things{ 25, false }, 2, 34.0);
REQUIRE(thingsg.a == 27);
REQUIRE_FALSE(thingsg.b);
REQUIRE(d == 36.5);
}
TEST_CASE("customization/usertype", "using the old customization points to handle different kinds of classes") {
sol::state lua;
// Create a pass-through style of function
auto result1 = lua.safe_script("function f ( a ) return a end");
REQUIRE(result1.valid());
lua.set_function("g", [](double a) {
number_shim ns;
ns.num = a;
return ns;
});
auto result2 = lua.safe_script("vf = f(25) vg = g(35)", sol::script_pass_on_error);
REQUIRE(result2.valid());
number_shim thingsf = lua["vf"];
number_shim thingsg = lua["vg"];
REQUIRE(thingsf.num == 25);
REQUIRE(thingsg.num == 35);
}
TEST_CASE("customization/overloading", "using multi-size customized types in an overload") {
bool TwoThingsWorks = false, OverloadWorks = false;
sol::state lua;
lua["test_two_things"] = [&](two_things) { TwoThingsWorks = true; };
lua["test_overload"] = sol::overload([&](two_things) { OverloadWorks = true; }, [] {});
lua.script(
"test_two_things(0, true)\n"
"test_overload(0, true)");
REQUIRE(TwoThingsWorks);
REQUIRE(OverloadWorks);
}
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