mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
1065 lines
31 KiB
C++
1065 lines
31 KiB
C++
// sol2
|
|
|
|
// The MIT License (MIT)
|
|
|
|
// Copyright (c) 2013-2018 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.
|
|
|
|
#ifndef SOL_STACK_PUSH_HPP
|
|
#define SOL_STACK_PUSH_HPP
|
|
|
|
#include "stack_core.hpp"
|
|
#include "raii.hpp"
|
|
#include "optional.hpp"
|
|
#include "usertype_traits.hpp"
|
|
#include "filters.hpp"
|
|
#include "unicode.hpp"
|
|
|
|
#include <memory>
|
|
#include <type_traits>
|
|
#include <cassert>
|
|
#include <limits>
|
|
#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES
|
|
#include <string_view>
|
|
#if defined(SOL_STD_VARIANT) && SOL_STD_VARIANT
|
|
#include <variant>
|
|
#endif // Can use variant
|
|
#endif // C++17
|
|
|
|
namespace sol {
|
|
namespace stack {
|
|
inline int push_environment_of(lua_State* L, int index = -1) {
|
|
#if SOL_LUA_VERSION < 502
|
|
// Use lua_getfenv
|
|
lua_getfenv(L, index);
|
|
return 1;
|
|
#else
|
|
// Use upvalues as explained in Lua 5.2 and beyond's manual
|
|
if (lua_getupvalue(L, index, 1) == nullptr) {
|
|
push(L, lua_nil);
|
|
return 1;
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
template <typename T>
|
|
int push_environment_of(const T& target) {
|
|
target.push();
|
|
return push_environment_of(target.lua_state(), -1) + 1;
|
|
}
|
|
|
|
template <typename T>
|
|
struct pusher<detail::as_value_tag<T>> {
|
|
template <typename F, typename... Args>
|
|
static int push_fx(lua_State* L, F&& f, Args&&... args) {
|
|
// Basically, we store all user-data like this:
|
|
// If it's a movable/copyable value (no std::ref(x)), then we store the pointer to the new
|
|
// data in the first sizeof(T*) bytes, and then however many bytes it takes to
|
|
// do the actual object. Things that are std::ref or plain T* are stored as
|
|
// just the sizeof(T*), and nothing else.
|
|
T* obj = detail::usertype_allocate<T>(L);
|
|
std::allocator<T> alloc{};
|
|
std::allocator_traits<std::allocator<T>>::construct(alloc, obj, std::forward<Args>(args)...);
|
|
f();
|
|
return 1;
|
|
}
|
|
|
|
template <typename K, typename... Args>
|
|
static int push_keyed(lua_State* L, K&& k, Args&&... args) {
|
|
stack_detail::undefined_metatable<T> fx(L, &k[0]);
|
|
return push_fx(L, fx, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
static int push(lua_State* L, Args&&... args) {
|
|
return push_keyed(L, usertype_traits<T>::metatable(), std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<detail::as_pointer_tag<T>> {
|
|
typedef meta::unqualified_t<T> U;
|
|
|
|
template <typename F>
|
|
static int push_fx(lua_State* L, F&& f, T* obj) {
|
|
if (obj == nullptr)
|
|
return stack::push(L, lua_nil);
|
|
T** pref = detail::usertype_allocate_pointer<T>(L);
|
|
*pref = obj;
|
|
f();
|
|
return 1;
|
|
}
|
|
|
|
template <typename K>
|
|
static int push_keyed(lua_State* L, K&& k, T* obj) {
|
|
stack_detail::undefined_metatable<U*> fx(L, &k[0]);
|
|
return push_fx(L, fx, obj);
|
|
}
|
|
|
|
static int push(lua_State* L, T* obj) {
|
|
return push_keyed(L, usertype_traits<U*>::metatable(), obj);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<detail::as_reference_tag> {
|
|
template <typename T>
|
|
static int push(lua_State* L, T&& obj) {
|
|
return stack::push(L, detail::ptr(obj));
|
|
}
|
|
};
|
|
|
|
template <typename T, typename>
|
|
struct pusher {
|
|
template <typename... Args>
|
|
static int push(lua_State* L, Args&&... args) {
|
|
return pusher<detail::as_value_tag<T>>{}.push(L, std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T*, meta::disable_if_t<meta::any<is_container<meta::unqualified_t<T>>, std::is_function<meta::unqualified_t<T>>, is_lua_reference<meta::unqualified_t<T>>>::value>> {
|
|
template <typename... Args>
|
|
static int push(lua_State* L, Args&&... args) {
|
|
return pusher<detail::as_pointer_tag<T>>{}.push(L, std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T, std::enable_if_t<is_unique_usertype<T>::value>> {
|
|
typedef unique_usertype_traits<T> u_traits;
|
|
typedef typename u_traits::type P;
|
|
typedef typename u_traits::actual_type Real;
|
|
typedef typename u_traits::template rebind_base<void> rebind_t;
|
|
|
|
template <typename Arg, meta::enable<std::is_base_of<Real, meta::unqualified_t<Arg>>> = meta::enabler>
|
|
static int push(lua_State* L, Arg&& arg) {
|
|
if (unique_usertype_traits<T>::is_null(arg)) {
|
|
return stack::push(L, lua_nil);
|
|
}
|
|
return push_deep(L, std::forward<Arg>(arg));
|
|
}
|
|
|
|
template <typename Arg0, typename Arg1, typename... Args>
|
|
static int push(lua_State* L, Arg0&& arg0, Arg0&& arg1, Args&&... args) {
|
|
return push_deep(L, std::forward<Arg0>(arg0), std::forward<Arg1>(arg1), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
static int push_deep(lua_State* L, Args&&... args) {
|
|
P** pref = nullptr;
|
|
detail::unique_destructor* fx = nullptr;
|
|
detail::unique_tag* id = nullptr;
|
|
Real* mem = detail::usertype_unique_allocate<P, Real>(L, pref, fx, id);
|
|
*fx = detail::usertype_unique_alloc_destroy<P, Real>;
|
|
*id = &detail::inheritance<P>::template type_unique_cast<Real>;
|
|
detail::default_construct::construct(mem, std::forward<Args>(args)...);
|
|
*pref = unique_usertype_traits<T>::get(*mem);
|
|
if (luaL_newmetatable(L, &usertype_traits<detail::unique_usertype<std::remove_cv_t<P>>>::metatable()[0]) == 1) {
|
|
luaL_Reg l[32]{};
|
|
int index = 0;
|
|
auto prop_fx = [](meta_function) { return true; };
|
|
usertype_detail::insert_default_registrations<P>(l, index, prop_fx);
|
|
usertype_detail::make_destructor<T>(l, index);
|
|
luaL_setfuncs(L, l, 0);
|
|
}
|
|
lua_setmetatable(L, -2);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<std::reference_wrapper<T>> {
|
|
static int push(lua_State* L, const std::reference_wrapper<T>& t) {
|
|
return stack::push(L, std::addressof(detail::deref(t.get())));
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T, std::enable_if_t<std::is_floating_point<T>::value>> {
|
|
static int push(lua_State* L, const T& value) {
|
|
lua_pushnumber(L, value);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T, std::enable_if_t<std::is_integral<T>::value>> {
|
|
static int push(lua_State* L, const T& value) {
|
|
#if SOL_LUA_VERSION >= 503
|
|
static auto integer_value_fits = [](T const& value) {
|
|
if (sizeof(T) < sizeof(lua_Integer) || (std::is_signed<T>::value && sizeof(T) == sizeof(lua_Integer))) {
|
|
return true;
|
|
}
|
|
auto u_min = static_cast<std::intmax_t>((std::numeric_limits<lua_Integer>::min)());
|
|
auto u_max = static_cast<std::uintmax_t>((std::numeric_limits<lua_Integer>::max)());
|
|
auto t_min = static_cast<std::intmax_t>((std::numeric_limits<T>::min)());
|
|
auto t_max = static_cast<std::uintmax_t>((std::numeric_limits<T>::max)());
|
|
return (u_min <= t_min || value >= static_cast<T>(u_min)) && (u_max >= t_max || value <= static_cast<T>(u_max));
|
|
};
|
|
if (integer_value_fits(value)) {
|
|
lua_pushinteger(L, static_cast<lua_Integer>(value));
|
|
return 1;
|
|
}
|
|
#endif // Lua 5.3 and above
|
|
#if (defined(SOL_SAFE_NUMERICS) && SOL_SAFE_NUMERICS) && !(defined(SOL_NO_CHECK_NUMBER_PRECISION) && SOL_NO_CHECK_NUMBER_PRECISION)
|
|
if (static_cast<T>(llround(static_cast<lua_Number>(value))) != value) {
|
|
#if defined(SOL_NO_EXCEPTIONS) && SOL_NO_EXCEPTIONS
|
|
// Is this really worth it?
|
|
assert(false && "integer value will be misrepresented in lua");
|
|
lua_pushnumber(L, static_cast<lua_Number>(value));
|
|
return 1;
|
|
#else
|
|
throw error(detail::direct_error, "integer value will be misrepresented in lua");
|
|
#endif // No Exceptions
|
|
}
|
|
#endif // Safe Numerics and Number Precision Check
|
|
lua_pushnumber(L, static_cast<lua_Number>(value));
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T, std::enable_if_t<std::is_enum<T>::value>> {
|
|
static int push(lua_State* L, const T& value) {
|
|
if (std::is_same<char, std::underlying_type_t<T>>::value) {
|
|
return stack::push(L, static_cast<int>(value));
|
|
}
|
|
return stack::push(L, static_cast<std::underlying_type_t<T>>(value));
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<detail::as_table_tag<T>> {
|
|
static int push(lua_State* L, const T& tablecont) {
|
|
typedef meta::has_key_value_pair<meta::unqualified_t<std::remove_pointer_t<T>>> has_kvp;
|
|
return push(has_kvp(), std::false_type(), L, tablecont);
|
|
}
|
|
|
|
static int push(std::true_type, lua_State* L, const T& tablecont) {
|
|
typedef meta::has_key_value_pair<meta::unqualified_t<std::remove_pointer_t<T>>> has_kvp;
|
|
return push(has_kvp(), std::true_type(), L, tablecont);
|
|
}
|
|
|
|
static int push(std::false_type, lua_State* L, const T& tablecont) {
|
|
typedef meta::has_key_value_pair<meta::unqualified_t<std::remove_pointer_t<T>>> has_kvp;
|
|
return push(has_kvp(), std::false_type(), L, tablecont);
|
|
}
|
|
|
|
template <bool is_nested>
|
|
static int push(std::true_type, std::integral_constant<bool, is_nested>, lua_State* L, const T& tablecont) {
|
|
auto& cont = detail::deref(detail::unwrap(tablecont));
|
|
lua_createtable(L, static_cast<int>(cont.size()), 0);
|
|
int tableindex = lua_gettop(L);
|
|
for (const auto& pair : cont) {
|
|
if (is_nested) {
|
|
set_field(L, pair.first, as_nested_ref(pair.second), tableindex);
|
|
}
|
|
else {
|
|
set_field(L, pair.first, pair.second, tableindex);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
template <bool is_nested>
|
|
static int push(std::false_type, std::integral_constant<bool, is_nested>, lua_State* L, const T& tablecont) {
|
|
auto& cont = detail::deref(detail::unwrap(tablecont));
|
|
lua_createtable(L, stack_detail::get_size_hint(cont), 0);
|
|
int tableindex = lua_gettop(L);
|
|
std::size_t index = 1;
|
|
for (const auto& i : cont) {
|
|
#if SOL_LUA_VERSION >= 503
|
|
int p = is_nested ? stack::push(L, as_nested_ref(i)) : stack::push(L, i);
|
|
for (int pi = 0; pi < p; ++pi) {
|
|
lua_seti(L, tableindex, static_cast<lua_Integer>(index++));
|
|
}
|
|
#else
|
|
lua_pushinteger(L, static_cast<lua_Integer>(index));
|
|
int p = is_nested ? stack::push(L, as_nested_ref(i)) : stack::push(L, i);
|
|
if (p == 1) {
|
|
++index;
|
|
lua_settable(L, tableindex);
|
|
}
|
|
else {
|
|
int firstindex = tableindex + 1 + 1;
|
|
for (int pi = 0; pi < p; ++pi) {
|
|
stack::push(L, index);
|
|
lua_pushvalue(L, firstindex);
|
|
lua_settable(L, tableindex);
|
|
++index;
|
|
++firstindex;
|
|
}
|
|
lua_pop(L, 1 + p);
|
|
}
|
|
#endif // Lua Version 5.3 and others
|
|
}
|
|
// TODO: figure out a better way to do this...?
|
|
//set_field(L, -1, cont.size());
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<as_table_t<T>, std::enable_if_t<is_container<std::remove_pointer_t<meta::unwrap_unqualified_t<T>>>::value>> {
|
|
static int push(lua_State* L, const T& tablecont) {
|
|
return stack::push<detail::as_table_tag<T>>(L, tablecont);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<as_table_t<T>, std::enable_if_t<!is_container<std::remove_pointer_t<meta::unwrap_unqualified_t<T>>>::value>> {
|
|
static int push(lua_State* L, const T& v) {
|
|
return stack::push(L, v);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<nested<T>, std::enable_if_t<is_container<std::remove_pointer_t<meta::unwrap_unqualified_t<T>>>::value>> {
|
|
static int push(lua_State* L, const T& tablecont) {
|
|
pusher<detail::as_table_tag<T>> p{};
|
|
// silence annoying VC++ warning
|
|
(void)p;
|
|
return p.push(std::true_type(), L, tablecont);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<nested<T>, std::enable_if_t<!is_container<std::remove_pointer_t<meta::unwrap_unqualified_t<T>>>::value>> {
|
|
static int push(lua_State* L, const T& tablecont) {
|
|
pusher<meta::unqualified_t<T>> p{};
|
|
// silence annoying VC++ warning
|
|
(void)p;
|
|
return p.push(L, tablecont);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<std::initializer_list<T>> {
|
|
static int push(lua_State* L, const std::initializer_list<T>& il) {
|
|
pusher<detail::as_table_tag<std::initializer_list<T>>> p{};
|
|
// silence annoying VC++ warning
|
|
(void)p;
|
|
return p.push(L, il);
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<T, std::enable_if_t<is_lua_reference<T>::value>> {
|
|
static int push(lua_State* L, const T& ref) {
|
|
return ref.push(L);
|
|
}
|
|
|
|
static int push(lua_State* L, T&& ref) {
|
|
return ref.push(L);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<bool> {
|
|
static int push(lua_State* L, bool b) {
|
|
lua_pushboolean(L, b);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<lua_nil_t> {
|
|
static int push(lua_State* L, lua_nil_t) {
|
|
lua_pushnil(L);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<stack_count> {
|
|
static int push(lua_State*, stack_count st) {
|
|
return st.count;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<metatable_t> {
|
|
static int push(lua_State* L, metatable_t) {
|
|
lua_pushlstring(L, "__mt", 4);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<std::remove_pointer_t<lua_CFunction>> {
|
|
static int push(lua_State* L, lua_CFunction func, int n = 0) {
|
|
lua_pushcclosure(L, func, n);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<lua_CFunction> {
|
|
static int push(lua_State* L, lua_CFunction func, int n = 0) {
|
|
lua_pushcclosure(L, func, n);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
#if defined(SOL_NOEXCEPT_FUNCTION_TYPE) && SOL_NOEXCEPT_FUNCTION_TYPE
|
|
template <>
|
|
struct pusher<std::remove_pointer_t<detail::lua_CFunction_noexcept>> {
|
|
static int push(lua_State* L, detail::lua_CFunction_noexcept func, int n = 0) {
|
|
lua_pushcclosure(L, func, n);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<detail::lua_CFunction_noexcept> {
|
|
static int push(lua_State* L, detail::lua_CFunction_noexcept func, int n = 0) {
|
|
lua_pushcclosure(L, func, n);
|
|
return 1;
|
|
}
|
|
};
|
|
#endif // noexcept function type
|
|
|
|
template <>
|
|
struct pusher<c_closure> {
|
|
static int push(lua_State* L, c_closure cc) {
|
|
lua_pushcclosure(L, cc.c_function, cc.upvalues);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename Arg, typename... Args>
|
|
struct pusher<closure<Arg, Args...>> {
|
|
template <std::size_t... I, typename T>
|
|
static int push(std::index_sequence<I...>, lua_State* L, T&& c) {
|
|
int pushcount = multi_push(L, detail::forward_get<I>(c.upvalues)...);
|
|
return stack::push(L, c_closure(c.c_function, pushcount));
|
|
}
|
|
|
|
template <typename T>
|
|
static int push(lua_State* L, T&& c) {
|
|
return push(std::make_index_sequence<1 + sizeof...(Args)>(), L, std::forward<T>(c));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<void*> {
|
|
static int push(lua_State* L, void* userdata) {
|
|
lua_pushlightuserdata(L, userdata);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<const void*> {
|
|
static int push(lua_State* L, const void* userdata) {
|
|
lua_pushlightuserdata(L, const_cast<void*>(userdata));
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<lightuserdata_value> {
|
|
static int push(lua_State* L, lightuserdata_value userdata) {
|
|
lua_pushlightuserdata(L, userdata);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<light<T>> {
|
|
static int push(lua_State* L, light<T> l) {
|
|
lua_pushlightuserdata(L, static_cast<void*>(l.value));
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
struct pusher<user<T>> {
|
|
template <bool with_meta = true, typename Key, typename... Args>
|
|
static int push_with(lua_State* L, Key&& name, Args&&... args) {
|
|
// A dumb pusher
|
|
T* data = detail::user_allocate<T>(L);
|
|
std::allocator<T> alloc{};
|
|
std::allocator_traits<std::allocator<T>>::construct(alloc, data, std::forward<Args>(args)...);
|
|
if (with_meta) {
|
|
// Make sure we have a plain GC set for this data
|
|
if (luaL_newmetatable(L, name) != 0) {
|
|
lua_CFunction cdel = detail::user_alloc_destruct<T>;
|
|
lua_pushcclosure(L, cdel, 0);
|
|
lua_setfield(L, -2, "__gc");
|
|
}
|
|
lua_setmetatable(L, -2);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
template <typename Arg, typename... Args, meta::disable<meta::any_same<meta::unqualified_t<Arg>, no_metatable_t, metatable_t>> = meta::enabler>
|
|
static int push(lua_State* L, Arg&& arg, Args&&... args) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with(L, name, std::forward<Arg>(arg), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
static int push(lua_State* L, no_metatable_t, Args&&... args) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with<false>(L, name, std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename Key, typename... Args>
|
|
static int push(lua_State* L, metatable_t, Key&& key, Args&&... args) {
|
|
const auto name = &key[0];
|
|
return push_with<true>(L, name, std::forward<Args>(args)...);
|
|
}
|
|
|
|
static int push(lua_State* L, const user<T>& u) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with(L, name, u.value);
|
|
}
|
|
|
|
static int push(lua_State* L, user<T>&& u) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with(L, name, std::move(u.value));
|
|
}
|
|
|
|
static int push(lua_State* L, no_metatable_t, const user<T>& u) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with<false>(L, name, u.value);
|
|
}
|
|
|
|
static int push(lua_State* L, no_metatable_t, user<T>&& u) {
|
|
const auto name = &usertype_traits<meta::unqualified_t<T>>::user_gc_metatable()[0];
|
|
return push_with<false>(L, name, std::move(u.value));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<userdata_value> {
|
|
static int push(lua_State* L, userdata_value data) {
|
|
void** ud = detail::usertype_allocate_pointer<void>(L);
|
|
*ud = data.value;
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<const char*> {
|
|
static int push_sized(lua_State* L, const char* str, std::size_t len) {
|
|
lua_pushlstring(L, str, len);
|
|
return 1;
|
|
}
|
|
|
|
static int push(lua_State* L, const char* str) {
|
|
if (str == nullptr)
|
|
return stack::push(L, lua_nil);
|
|
return push_sized(L, str, std::char_traits<char>::length(str));
|
|
}
|
|
|
|
static int push(lua_State* L, const char* strb, const char* stre) {
|
|
return push_sized(L, strb, stre - strb);
|
|
}
|
|
|
|
static int push(lua_State* L, const char* str, std::size_t len) {
|
|
return push_sized(L, str, len);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char*> {
|
|
static int push_sized(lua_State* L, const char* str, std::size_t len) {
|
|
pusher<const char*> p{};
|
|
(void)p;
|
|
return p.push_sized(L, str, len);
|
|
}
|
|
|
|
static int push(lua_State* L, const char* str) {
|
|
pusher<const char*> p{};
|
|
(void)p;
|
|
return p.push(L, str);
|
|
}
|
|
|
|
static int push(lua_State* L, const char* strb, const char* stre) {
|
|
pusher<const char*> p{};
|
|
(void)p;
|
|
return p.push(L, strb, stre);
|
|
}
|
|
|
|
static int push(lua_State* L, const char* str, std::size_t len) {
|
|
pusher<const char*> p{};
|
|
(void)p;
|
|
return p.push(L, str, len);
|
|
}
|
|
};
|
|
|
|
template <size_t N>
|
|
struct pusher<char[N]> {
|
|
static int push(lua_State* L, const char (&str)[N]) {
|
|
lua_pushlstring(L, str, N - 1);
|
|
return 1;
|
|
}
|
|
|
|
static int push(lua_State* L, const char (&str)[N], std::size_t sz) {
|
|
lua_pushlstring(L, str, sz);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char> {
|
|
static int push(lua_State* L, char c) {
|
|
const char str[2] = { c, '\0' };
|
|
return stack::push(L, str, 1);
|
|
}
|
|
};
|
|
|
|
template <typename Traits, typename Al>
|
|
struct pusher<std::basic_string<char, Traits, Al>> {
|
|
static int push(lua_State* L, const std::basic_string<char, Traits, Al>& str) {
|
|
lua_pushlstring(L, str.c_str(), str.size());
|
|
return 1;
|
|
}
|
|
|
|
static int push(lua_State* L, const std::basic_string<char, Traits, Al>& str, std::size_t sz) {
|
|
lua_pushlstring(L, str.c_str(), sz);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <typename Ch, typename Traits>
|
|
struct pusher<basic_string_view<Ch, Traits>> {
|
|
static int push(lua_State* L, const basic_string_view<Ch, Traits>& sv) {
|
|
return stack::push(L, sv.data(), sv.length());
|
|
}
|
|
|
|
static int push(lua_State* L, const basic_string_view<Ch, Traits>& sv, std::size_t n) {
|
|
return stack::push(L, sv.data(), n);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<meta_function> {
|
|
static int push(lua_State* L, meta_function m) {
|
|
const std::string& str = to_string(m);
|
|
lua_pushlstring(L, str.c_str(), str.size());
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<absolute_index> {
|
|
static int push(lua_State* L, absolute_index ai) {
|
|
lua_pushvalue(L, ai);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<raw_index> {
|
|
static int push(lua_State* L, raw_index ri) {
|
|
lua_pushvalue(L, ri);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<ref_index> {
|
|
static int push(lua_State* L, ref_index ri) {
|
|
lua_rawgeti(L, LUA_REGISTRYINDEX, ri);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<const wchar_t*> {
|
|
static int push(lua_State* L, const wchar_t* wstr) {
|
|
return push(L, wstr, std::char_traits<wchar_t>::length(wstr));
|
|
}
|
|
|
|
static int push(lua_State* L, const wchar_t* wstr, std::size_t sz) {
|
|
return push(L, wstr, wstr + sz);
|
|
}
|
|
|
|
static int push(lua_State* L, const wchar_t* strb, const wchar_t* stre) {
|
|
if (sizeof(wchar_t) == 2) {
|
|
const char16_t* sb = reinterpret_cast<const char16_t*>(strb);
|
|
const char16_t* se = reinterpret_cast<const char16_t*>(stre);
|
|
return stack::push(L, sb, se);
|
|
}
|
|
const char32_t* sb = reinterpret_cast<const char32_t*>(strb);
|
|
const char32_t* se = reinterpret_cast<const char32_t*>(stre);
|
|
return stack::push(L, sb, se);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<wchar_t*> {
|
|
static int push(lua_State* L, const wchar_t* str) {
|
|
pusher<const wchar_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str);
|
|
}
|
|
|
|
static int push(lua_State* L, const wchar_t* strb, const wchar_t* stre) {
|
|
pusher<const wchar_t*> p{};
|
|
(void)p;
|
|
return p.push(L, strb, stre);
|
|
}
|
|
|
|
static int push(lua_State* L, const wchar_t* str, std::size_t len) {
|
|
pusher<const wchar_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str, len);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<const char16_t*> {
|
|
static int convert_into(lua_State* L, char* start, std::size_t, const char16_t* strb, const char16_t* stre) {
|
|
char* target = start;
|
|
char32_t cp = 0;
|
|
for (const char16_t* strtarget = strb; strtarget < stre;) {
|
|
auto dr = unicode::utf16_to_code_point(strtarget, stre);
|
|
if (dr.error != unicode::error_code::ok) {
|
|
cp = unicode::unicode_detail::replacement;
|
|
}
|
|
else {
|
|
cp = dr.codepoint;
|
|
}
|
|
auto er = unicode::code_point_to_utf8(cp);
|
|
const char* utf8data = er.code_units.data();
|
|
std::memcpy(target, utf8data, er.code_units_size);
|
|
target += er.code_units_size;
|
|
strtarget = dr.next;
|
|
}
|
|
|
|
return stack::push(L, start, target);
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t* u16str) {
|
|
return push(L, u16str, std::char_traits<char16_t>::length(u16str));
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t* u16str, std::size_t sz) {
|
|
return push(L, u16str, u16str + sz);
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t* strb, const char16_t* stre) {
|
|
// TODO: use new unicode methods
|
|
// TODO: use new unicode methods
|
|
char sbo[SOL_STACK_STRING_OPTIMIZATION_SIZE];
|
|
// if our max string space is small enough, use SBO
|
|
// right off the bat
|
|
std::size_t max_possible_code_units = (stre - strb) * 4;
|
|
if (max_possible_code_units <= SOL_STACK_STRING_OPTIMIZATION_SIZE) {
|
|
return convert_into(L, sbo, max_possible_code_units, strb, stre);
|
|
}
|
|
// otherwise, we must manually count/check size
|
|
std::size_t needed_size = 0;
|
|
for (const char16_t* strtarget = strb; strtarget < stre;) {
|
|
auto dr = unicode::utf16_to_code_point(strtarget, stre);
|
|
auto er = unicode::code_point_to_utf8(dr.codepoint);
|
|
needed_size += er.code_units_size;
|
|
strtarget = dr.next;
|
|
}
|
|
if (needed_size < SOL_STACK_STRING_OPTIMIZATION_SIZE) {
|
|
return convert_into(L, sbo, needed_size, strb, stre);
|
|
}
|
|
std::string u8str("", 0);
|
|
u8str.resize(needed_size);
|
|
char* target = &u8str[0];
|
|
return convert_into(L, target, needed_size, strb, stre);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char16_t*> {
|
|
static int push(lua_State* L, const char16_t* str) {
|
|
pusher<const char16_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str);
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t* strb, const char16_t* stre) {
|
|
pusher<const char16_t*> p{};
|
|
(void)p;
|
|
return p.push(L, strb, stre);
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t* str, std::size_t len) {
|
|
pusher<const char16_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str, len);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<const char32_t*> {
|
|
static int convert_into(lua_State* L, char* start, std::size_t, const char32_t* strb, const char32_t* stre) {
|
|
char* target = start;
|
|
char32_t cp = 0;
|
|
for (const char32_t* strtarget = strb; strtarget < stre;) {
|
|
auto dr = unicode::utf32_to_code_point(strtarget, stre);
|
|
if (dr.error != unicode::error_code::ok) {
|
|
cp = unicode::unicode_detail::replacement;
|
|
}
|
|
else {
|
|
cp = dr.codepoint;
|
|
}
|
|
auto er = unicode::code_point_to_utf8(cp);
|
|
const char* data = er.code_units.data();
|
|
std::memcpy(target, data, er.code_units_size);
|
|
target += er.code_units_size;
|
|
strtarget = dr.next;
|
|
}
|
|
return stack::push(L, start, target);
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t* u32str) {
|
|
return push(L, u32str, u32str + std::char_traits<char32_t>::length(u32str));
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t* u32str, std::size_t sz) {
|
|
return push(L, u32str, u32str + sz);
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t* strb, const char32_t* stre) {
|
|
// TODO: use new unicode methods
|
|
char sbo[SOL_STACK_STRING_OPTIMIZATION_SIZE];
|
|
// if our max string space is small enough, use SBO
|
|
// right off the bat
|
|
std::size_t max_possible_code_units = (stre - strb) * 4;
|
|
if (max_possible_code_units <= SOL_STACK_STRING_OPTIMIZATION_SIZE) {
|
|
return convert_into(L, sbo, max_possible_code_units, strb, stre);
|
|
}
|
|
// otherwise, we must manually count/check size
|
|
std::size_t needed_size = 0;
|
|
for (const char32_t* strtarget = strb; strtarget < stre;) {
|
|
auto dr = unicode::utf32_to_code_point(strtarget, stre);
|
|
auto er = unicode::code_point_to_utf8(dr.codepoint);
|
|
needed_size += er.code_units_size;
|
|
strtarget = dr.next;
|
|
}
|
|
if (needed_size < SOL_STACK_STRING_OPTIMIZATION_SIZE) {
|
|
return convert_into(L, sbo, needed_size, strb, stre);
|
|
}
|
|
std::string u8str("", 0);
|
|
u8str.resize(needed_size);
|
|
char* target = &u8str[0];
|
|
return convert_into(L, target, needed_size, strb, stre);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char32_t*> {
|
|
static int push(lua_State* L, const char32_t* str) {
|
|
pusher<const char32_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str);
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t* strb, const char32_t* stre) {
|
|
pusher<const char32_t*> p{};
|
|
(void)p;
|
|
return p.push(L, strb, stre);
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t* str, std::size_t len) {
|
|
pusher<const char32_t*> p{};
|
|
(void)p;
|
|
return p.push(L, str, len);
|
|
}
|
|
};
|
|
|
|
template <size_t N>
|
|
struct pusher<wchar_t[N]> {
|
|
static int push(lua_State* L, const wchar_t (&str)[N]) {
|
|
return push(L, str, N - 1);
|
|
}
|
|
|
|
static int push(lua_State* L, const wchar_t (&str)[N], std::size_t sz) {
|
|
return stack::push<const wchar_t*>(L, str, str + sz);
|
|
}
|
|
};
|
|
|
|
template <size_t N>
|
|
struct pusher<char16_t[N]> {
|
|
static int push(lua_State* L, const char16_t (&str)[N]) {
|
|
return push(L, str, N - 1);
|
|
}
|
|
|
|
static int push(lua_State* L, const char16_t (&str)[N], std::size_t sz) {
|
|
return stack::push<const char16_t*>(L, str, str + sz);
|
|
}
|
|
};
|
|
|
|
template <size_t N>
|
|
struct pusher<char32_t[N]> {
|
|
static int push(lua_State* L, const char32_t (&str)[N]) {
|
|
return push(L, str, N - 1);
|
|
}
|
|
|
|
static int push(lua_State* L, const char32_t (&str)[N], std::size_t sz) {
|
|
return stack::push<const char32_t*>(L, str, str + sz);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<wchar_t> {
|
|
static int push(lua_State* L, wchar_t c) {
|
|
const wchar_t str[2] = { c, '\0' };
|
|
return stack::push(L, &str[0], 1);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char16_t> {
|
|
static int push(lua_State* L, char16_t c) {
|
|
const char16_t str[2] = { c, '\0' };
|
|
return stack::push(L, &str[0], 1);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<char32_t> {
|
|
static int push(lua_State* L, char32_t c) {
|
|
const char32_t str[2] = { c, '\0' };
|
|
return stack::push(L, &str[0], 1);
|
|
}
|
|
};
|
|
|
|
template <typename Ch, typename Traits, typename Al>
|
|
struct pusher<std::basic_string<Ch, Traits, Al>, std::enable_if_t<!std::is_same<Ch, char>::value>> {
|
|
static int push(lua_State* L, const std::basic_string<Ch, Traits, Al>& wstr) {
|
|
return push(L, wstr, wstr.size());
|
|
}
|
|
|
|
static int push(lua_State* L, const std::basic_string<Ch, Traits, Al>& wstr, std::size_t sz) {
|
|
return stack::push(L, wstr.data(), wstr.data() + sz);
|
|
}
|
|
};
|
|
|
|
template <typename... Args>
|
|
struct pusher<std::tuple<Args...>> {
|
|
template <std::size_t... I, typename T>
|
|
static int push(std::index_sequence<I...>, lua_State* L, T&& t) {
|
|
int pushcount = 0;
|
|
(void)detail::swallow{ 0, (pushcount += stack::push(L, detail::forward_get<I>(t)), 0)... };
|
|
return pushcount;
|
|
}
|
|
|
|
template <typename T>
|
|
static int push(lua_State* L, T&& t) {
|
|
return push(std::index_sequence_for<Args...>(), L, std::forward<T>(t));
|
|
}
|
|
};
|
|
|
|
template <typename A, typename B>
|
|
struct pusher<std::pair<A, B>> {
|
|
template <typename T>
|
|
static int push(lua_State* L, T&& t) {
|
|
int pushcount = stack::push(L, detail::forward_get<0>(t));
|
|
pushcount += stack::push(L, detail::forward_get<1>(t));
|
|
return pushcount;
|
|
}
|
|
};
|
|
|
|
template <typename O>
|
|
struct pusher<optional<O>> {
|
|
template <typename T>
|
|
static int push(lua_State* L, T&& t) {
|
|
if (t == nullopt) {
|
|
return stack::push(L, nullopt);
|
|
}
|
|
return stack::push(L, static_cast<std::conditional_t<std::is_lvalue_reference<T>::value, O&, O&&>>(t.value()));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<nullopt_t> {
|
|
static int push(lua_State* L, nullopt_t) {
|
|
return stack::push(L, lua_nil);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<std::nullptr_t> {
|
|
static int push(lua_State* L, std::nullptr_t) {
|
|
return stack::push(L, lua_nil);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<this_state> {
|
|
static int push(lua_State*, const this_state&) {
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<this_main_state> {
|
|
static int push(lua_State*, const this_main_state&) {
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct pusher<new_table> {
|
|
static int push(lua_State* L, const new_table& nt) {
|
|
lua_createtable(L, nt.sequence_hint, nt.map_hint);
|
|
return 1;
|
|
}
|
|
};
|
|
|
|
#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES
|
|
#if defined(SOL_STD_VARIANT) && SOL_STD_VARIANT
|
|
namespace stack_detail {
|
|
|
|
struct push_function {
|
|
lua_State* L;
|
|
|
|
push_function(lua_State* L)
|
|
: L(L) {
|
|
}
|
|
|
|
template <typename T>
|
|
int operator()(T&& value) const {
|
|
return stack::push<T>(L, std::forward<T>(value));
|
|
}
|
|
};
|
|
|
|
} // namespace stack_detail
|
|
|
|
template <typename... Tn>
|
|
struct pusher<std::variant<Tn...>> {
|
|
static int push(lua_State* L, const std::variant<Tn...>& v) {
|
|
return std::visit(stack_detail::push_function(L), v);
|
|
}
|
|
|
|
static int push(lua_State* L, std::variant<Tn...>&& v) {
|
|
return std::visit(stack_detail::push_function(L), std::move(v));
|
|
}
|
|
};
|
|
#endif // Variant because Clang is terrible
|
|
#endif // C++17 Support
|
|
}
|
|
} // namespace sol::stack
|
|
|
|
#endif // SOL_STACK_PUSH_HPP
|