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ipairs and pairs improved support, folding the registration table down to avoid duplicated code

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This commit is contained in:
ThePhD 2016-10-21 07:05:58 -04:00
parent 661e361b26
commit a65f795b79
2 changed files with 30 additions and 26 deletions
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47
sol/container_usertype_metatable.hpp
View File

@ -298,11 +298,12 @@ namespace sol {
iter& i = stack::get<user<iter>>(L, 1);
auto& source = i.source;
auto& it = i.it;
std::advance(it, 1);
if (it == end(source)) {
return 0;
}
return stack::multi_push_reference(L, it->first, it->second);
int p = stack::multi_push_reference(L, it->first, it->second);
std::advance(it, 1);
return p;
}
static int real_pairs_call(lua_State* L) {
@ -341,6 +342,22 @@ namespace sol {
};
namespace stack {
namespace stack_detail {
template <typename T>
inline const auto& container_metatable() {
typedef container_usertype_metatable<std::remove_pointer_t<T>> cumt;
static const luaL_Reg reg[] = {
{ "__index", &cumt::index_call },
{ "__newindex", &cumt::new_index_call },
{ "__pairs", &cumt::pairs_call },
{ "__ipairs", &cumt::pairs_call },
{ "__len", &cumt::length_call },
{ std::is_pointer<T>::value ? nullptr : "__gc", std::is_pointer<T>::value ? nullptr : &detail::usertype_alloc_destroy<T> },
{ nullptr, nullptr }
};
return reg;
}
}
template<typename T>
struct pusher<T, std::enable_if_t<meta::all<meta::has_begin_end<T>, meta::neg<meta::any<std::is_base_of<reference, T>, std::is_base_of<stack_reference, T>>>>::value>> {
@ -349,14 +366,7 @@ namespace sol {
auto fx = [&L]() {
const char* metakey = &usertype_traits<T>::metatable[0];
if (luaL_newmetatable(L, metakey) == 1) {
luaL_Reg reg[] = {
{ "__index", &cumt::index_call },
{ "__newindex", &cumt::new_index_call },
{ "__pairs", &cumt::pairs_call },
{ "__len", &cumt::length_call },
{ "__gc", &detail::usertype_alloc_destroy<T> },
{ nullptr, nullptr }
};
const auto& reg = stack_detail::container_metatable<T>();
luaL_setfuncs(L, reg, 0);
}
lua_setmetatable(L, -2);
@ -368,14 +378,7 @@ namespace sol {
auto fx = [&L]() {
const char* metakey = &usertype_traits<T>::metatable[0];
if (luaL_newmetatable(L, metakey) == 1) {
luaL_Reg reg[] = {
{ "__index", &cumt::index_call },
{ "__newindex", &cumt::new_index_call },
{ "__pairs", &cumt::pairs_call },
{ "__len", &cumt::length_call },
{ "__gc", &detail::usertype_alloc_destroy<T> },
{ nullptr, nullptr }
};
const auto& reg = stack_detail::container_metatable<T>();
luaL_setfuncs(L, reg, 0);
}
lua_setmetatable(L, -2);
@ -391,13 +394,7 @@ namespace sol {
auto fx = [&L]() {
const char* metakey = &usertype_traits<meta::unqualified_t<T>*>::metatable[0];
if (luaL_newmetatable(L, metakey) == 1) {
luaL_Reg reg[] = {
{ "__index", &cumt::index_call },
{ "__newindex", &cumt::new_index_call },
{ "__pairs", &cumt::pairs_call },
{ "__len", &cumt::length_call },
{ nullptr, nullptr }
};
const auto& reg = stack_detail::container_metatable<T*>();
luaL_setfuncs(L, reg, 0);
}
lua_setmetatable(L, -2);

9
sol/types.hpp
View File

@ -361,6 +361,7 @@ namespace sol {
new_index,
mode,
call,
call_function = call,
metatable,
to_string,
length,
@ -377,7 +378,13 @@ namespace sol {
less_than,
less_than_or_equal_to,
garbage_collect,
call_function = call,
floor_division,
bitwise_left_shift,
bitwise_right_shift,
bitwise_not,
bitwise_and,
bitwise_or,
bitwise_xor,
};
typedef meta_function meta_method;