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Merge pull request #9 from ThePhD/master

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More VC++ compatibility, some features, and some warning supression for GCC.
This commit is contained in:
Danny 2013-12-14 21:01:07 -08:00
commit 0e31358d97
7 changed files with 88 additions and 8 deletions
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7
sol/function.hpp
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@ -65,9 +65,14 @@ public:
void operator()(Args&&... args) {
call<>(std::forward<Args>(args)...);
}
template<typename... Ret, typename... Args>
typename multi_return<Ret...>::type operator()(types<Ret...>, Args&&... args) {
return call<Ret...>(std::forward<Args>(args)...);
}
template<typename... Ret, typename... Args>
auto call(Args&&... args) -> decltype(invoke(types<Ret...>(), sizeof...(Args))) {
typename multi_return<Ret...>::type call(Args&&... args) {
push();
stack::push_args(state(), std::forward<Args>(args)...);
return invoke(types<Ret...>(), sizeof...(Args));

18
sol/stack.hpp
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@ -207,7 +207,7 @@ inline int push_user(lua_State* L, T& item) {
namespace detail {
template<typename T, std::size_t... I>
inline void push(lua_State* L, indices<I...>, const T& tuplen) {
inline void push_tuple(lua_State* L, indices<I...>, T&& tuplen) {
using swallow = char[ 1 + sizeof...(I) ];
swallow {'\0', (sol::stack::push(L, std::get<I>(tuplen)), '\0')... };
}
@ -228,7 +228,12 @@ auto ltr_pop(lua_State* L, F&& f, types<Head, Tail...>, Vs&&... vs) -> decltype(
template<typename... Args>
inline void push(lua_State* L, const std::tuple<Args...>& tuplen) {
detail::push(L, build_indices<sizeof...(Args)>(), tuplen);
detail::push_tuple(L, build_reverse_indices<sizeof...(Args)>(), tuplen);
}
template<typename... Args>
inline void push(lua_State* L, std::tuple<Args...>&& tuplen) {
detail::push_tuple(L, build_reverse_indices<sizeof...(Args)>(), std::move(tuplen));
}
template<typename... Args, typename TFx>
@ -236,9 +241,14 @@ inline auto pop_call(lua_State* L, TFx&& fx, types<Args...>) -> decltype(detail:
return detail::ltr_pop(L, std::forward<TFx>(fx), types<Args...>());
}
template<typename... Args>
void push_args(lua_State* L, Args&&... args) {
void push_args(lua_State*) {
}
template<typename Arg, typename... Args>
void push_args(lua_State* L, Arg&& arg, Args&&... args) {
using swallow = char[];
stack::push(L, std::forward<Arg>(arg));
void(swallow{'\0', (stack::push(L, std::forward<Args>(args)), '\0')... });
}
} // stack

5
sol/table.hpp
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@ -118,6 +118,11 @@ private:
operator U() const {
return t.get<U>(key);
}
template<typename... Ret, typename... Args>
typename multi_return<Ret...>::type call(Args&&... args) {
return t.get<function>(key)(types<Ret...>(), std::forward<Args>(args)...);
}
};
template<typename T, typename TFx>

16
sol/traits.hpp
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@ -22,6 +22,7 @@
#ifndef SOL_TRAITS_HPP
#define SOL_TRAITS_HPP
#include "tuple.hpp"
#include <type_traits>
namespace sol {
@ -62,6 +63,21 @@ struct is_function_impl<T, true> {
};
} // detail
template<typename... Args>
struct multi_return {
typedef std::tuple<Args...> type;
};
template<typename T>
struct multi_return<T> {
typedef T type;
};
template<>
struct multi_return<> : types<>{
typedef void type;
};
template<bool B>
using Bool = std::integral_constant<bool, B>;

23
sol/tuple.hpp
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@ -26,8 +26,23 @@
#include <cstddef>
namespace sol {
template<typename... Ts>
struct reverse_tuple;
template<>
struct reverse_tuple<std::tuple<>> {
using type = std::tuple<>;
};
template<typename T, typename... Ts>
struct reverse_tuple<std::tuple<T, Ts...>> {
using head = std::tuple<T>;
using tail = typename reverse_tuple<std::tuple<Ts...>>::type;
using type = decltype(std::tuple_cat(std::declval<tail>(), std::declval<head>()));
};
template<size_t... Ns>
struct indices {};
struct indices { typedef indices type; };
template<size_t N, size_t... Ns>
struct build_indices : build_indices<N - 1, N - 1, Ns...> {};
@ -35,6 +50,12 @@ struct build_indices : build_indices<N - 1, N - 1, Ns...> {};
template<size_t... Ns>
struct build_indices<0, Ns...> : indices<Ns...> {};
template<size_t N, size_t... Ns>
struct build_reverse_indices : build_reverse_indices<N - 1, Ns..., N - 1> {};
template<size_t... Ns>
struct build_reverse_indices<0, Ns...> : indices<Ns...> {};
template<typename... Args>
struct types : build_indices<sizeof...(Args)> {};

3
sol/types.hpp
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@ -113,6 +113,9 @@ template<>
inline type type_of<bool>() {
return type::boolean;
}
inline bool operator==(nil_t, nil_t) { return true; }
inline bool operator!=(nil_t, nil_t) { return false; }
} // sol
#endif // SOL_TYPES_HPP

24
tests.cpp
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@ -112,18 +112,38 @@ TEST_CASE("simple/callLambda", "A C++ lambda is exposed to lua and called") {
}
TEST_CASE("advanced/callLambdaReturns", "Checks for lambdas returning values") {
const static std::string lol = "lol", str = "str";
const static std::tuple<int, float, double, std::string> heh_tuple = std::make_tuple(1, 6.28f, 3.14, std::string("heh"));
sol::state lua;
REQUIRE_NOTHROW(lua.set_function("a", [ ] { return 42; }));
REQUIRE(lua["a"].call<int>() == 42);
REQUIRE_NOTHROW(lua.set_function("b", [ ] { return 42u; }));
REQUIRE(lua["b"].call<unsigned int>() == 42u);
REQUIRE_NOTHROW(lua.set_function("c", [ ] { return 3.14; }));
REQUIRE(lua["c"].call<double>() == 3.14);
REQUIRE_NOTHROW(lua.set_function("d", [ ] { return 6.28f; }));
REQUIRE(lua["d"].call<float>() == 6.28f);
REQUIRE_NOTHROW(lua.set_function("e", [ ] { return "lol"; }));
REQUIRE(lua["e"].call<std::string>() == lol);
REQUIRE_NOTHROW(lua.set_function("f", [ ] { return true; }));
REQUIRE(lua["f"].call<bool>());
REQUIRE_NOTHROW(lua.set_function("g", [ ] { return std::string("str"); }));
REQUIRE(lua["g"].call<std::string>() == str);
REQUIRE_NOTHROW(lua.set_function("h", [ ] { }));
REQUIRE_NOTHROW(lua["h"].call());
REQUIRE_NOTHROW(lua.set_function("i", [ ] { return sol::nil; }));
REQUIRE_NOTHROW(lua.set_function("j", [ ] { return std::make_tuple(1, 6.28f, 3.14, std::string( "heh" )); } ));
REQUIRE(lua["i"].call<sol::nil_t>() == sol::nil);
REQUIRE_NOTHROW(lua.set_function("j", [ ] { return std::make_tuple(1, 6.28f, 3.14, std::string("heh")); }));
REQUIRE((lua["j"].call<int, float, double, std::string>() == heh_tuple));
}
TEST_CASE("advanced/callLambda2", "A C++ lambda is exposed to lua and called") {
@ -178,7 +198,7 @@ TEST_CASE("tables/functions_variables", "Check if tables and function calls work
// l-value, can optomize
auto lval = object();
lua.get<sol::table>("os").set_function("fun", &object::operator(), lval);
REQUIRE_NOTHROW((lua));
REQUIRE_NOTHROW(run_script(lua));
// stateful lambda: non-convertible, unoptomizable
int breakit = 50;