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Diffstat (limited to '3rdparty/sol2/sol/variadic_args.hpp')
-rw-r--r-- | 3rdparty/sol2/sol/variadic_args.hpp | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/3rdparty/sol2/sol/variadic_args.hpp b/3rdparty/sol2/sol/variadic_args.hpp new file mode 100644 index 00000000000..36fa3cda7e2 --- /dev/null +++ b/3rdparty/sol2/sol/variadic_args.hpp @@ -0,0 +1,236 @@ +// The MIT License (MIT) + +// Copyright (c) 2013-2016 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_VARIADIC_ARGS_HPP +#define SOL_VARIADIC_ARGS_HPP + +#include "stack.hpp" +#include "stack_proxy.hpp" +#include <limits> +#include <iterator> + +namespace sol { + template <bool is_const> + struct va_iterator : std::iterator<std::random_access_iterator_tag, std::conditional_t<is_const, const stack_proxy, stack_proxy>, std::ptrdiff_t, std::conditional_t<is_const, const stack_proxy*, stack_proxy*>, std::conditional_t<is_const, const stack_proxy, stack_proxy>> { + typedef std::iterator<std::random_access_iterator_tag, std::conditional_t<is_const, const stack_proxy, stack_proxy>, std::ptrdiff_t, std::conditional_t<is_const, const stack_proxy*, stack_proxy*>, std::conditional_t<is_const, const stack_proxy, stack_proxy>> base_t; + typedef typename base_t::reference reference; + typedef typename base_t::pointer pointer; + typedef typename base_t::value_type value_type; + typedef typename base_t::difference_type difference_type; + typedef typename base_t::iterator_category iterator_category; + lua_State* L; + int index; + int stacktop; + stack_proxy sp; + + va_iterator() : L(nullptr), index((std::numeric_limits<int>::max)()), stacktop((std::numeric_limits<int>::max)()) {} + va_iterator(lua_State* L, int index, int stacktop) : L(L), index(index), stacktop(stacktop), sp(L, index) {} + + reference operator*() { + return stack_proxy(L, index); + } + + pointer operator->() { + sp = stack_proxy(L, index); + return &sp; + } + + va_iterator& operator++ () { + ++index; + return *this; + } + + va_iterator operator++ (int) { + auto r = *this; + this->operator ++(); + return r; + } + + va_iterator& operator-- () { + --index; + return *this; + } + + va_iterator operator-- (int) { + auto r = *this; + this->operator --(); + return r; + } + + va_iterator& operator+= (difference_type idx) { + index += static_cast<int>(idx); + return *this; + } + + va_iterator& operator-= (difference_type idx) { + index -= static_cast<int>(idx); + return *this; + } + + difference_type operator- (const va_iterator& r) const { + return index - r.index; + } + + va_iterator operator+ (difference_type idx) const { + va_iterator r = *this; + r += idx; + return r; + } + + reference operator[](difference_type idx) { + return stack_proxy(L, index + static_cast<int>(idx)); + } + + bool operator==(const va_iterator& r) const { + if (stacktop == (std::numeric_limits<int>::max)()) { + return r.index == r.stacktop; + } + else if (r.stacktop == (std::numeric_limits<int>::max)()) { + return index == stacktop; + } + return index == r.index; + } + + bool operator != (const va_iterator& r) const { + return !(this->operator==(r)); + } + + bool operator < (const va_iterator& r) const { + return index < r.index; + } + + bool operator > (const va_iterator& r) const { + return index > r.index; + } + + bool operator <= (const va_iterator& r) const { + return index <= r.index; + } + + bool operator >= (const va_iterator& r) const { + return index >= r.index; + } + }; + + template <bool is_const> + inline va_iterator<is_const> operator+(typename va_iterator<is_const>::difference_type n, const va_iterator<is_const>& r) { + return r + n; + } + + struct variadic_args { + private: + lua_State* L; + int index; + int stacktop; + + public: + typedef stack_proxy reference_type; + typedef stack_proxy value_type; + typedef stack_proxy* pointer; + typedef std::ptrdiff_t difference_type; + typedef std::size_t size_type; + typedef va_iterator<false> iterator; + typedef va_iterator<true> const_iterator; + typedef std::reverse_iterator<iterator> reverse_iterator; + typedef std::reverse_iterator<const_iterator> const_reverse_iterator; + + variadic_args() = default; + variadic_args(lua_State* L, int index = -1) : L(L), index(lua_absindex(L, index)), stacktop(lua_gettop(L)) {} + variadic_args(const variadic_args&) = default; + variadic_args& operator=(const variadic_args&) = default; + variadic_args(variadic_args&& o) : L(o.L), index(o.index), stacktop(o.stacktop) { + // Must be manual, otherwise destructor will screw us + // return count being 0 is enough to keep things clean + // but will be thorough + o.L = nullptr; + o.index = 0; + o.stacktop = 0; + } + variadic_args& operator=(variadic_args&& o) { + L = o.L; + index = o.index; + stacktop = o.stacktop; + // Must be manual, otherwise destructor will screw us + // return count being 0 is enough to keep things clean + // but will be thorough + o.L = nullptr; + o.index = 0; + o.stacktop = 0; + return *this; + } + + iterator begin() { return iterator(L, index, stacktop + 1); } + iterator end() { return iterator(L, stacktop + 1, stacktop + 1); } + const_iterator begin() const { return const_iterator(L, index, stacktop + 1); } + const_iterator end() const { return const_iterator(L, stacktop + 1, stacktop + 1); } + const_iterator cbegin() const { return begin(); } + const_iterator cend() const { return end(); } + + reverse_iterator rbegin() { return std::reverse_iterator<iterator>(begin()); } + reverse_iterator rend() { return std::reverse_iterator<iterator>(end()); } + const_reverse_iterator rbegin() const { return std::reverse_iterator<const_iterator>(begin()); } + const_reverse_iterator rend() const { return std::reverse_iterator<const_iterator>(end()); } + const_reverse_iterator crbegin() const { return std::reverse_iterator<const_iterator>(cbegin()); } + const_reverse_iterator crend() const { return std::reverse_iterator<const_iterator>(cend()); } + + int push() const { + int pushcount = 0; + for (int i = index; i <= stacktop; ++i) { + lua_pushvalue(L, i); + pushcount += 1; + } + return pushcount; + } + + template<typename T> + decltype(auto) get(difference_type start = 0) const { + return stack::get<T>(L, index + static_cast<int>(start)); + } + + stack_proxy operator[](difference_type start) const { + return stack_proxy(L, index + static_cast<int>(start)); + } + + lua_State* lua_state() const { return L; }; + int stack_index() const { return index; }; + int leftover_count() const { return stacktop - (index - 1); } + int top() const { return stacktop; } + }; + + namespace stack { + template <> + struct getter<variadic_args> { + static variadic_args get(lua_State* L, int index, record& tracking) { + tracking.last = 0; + return variadic_args(L, index); + } + }; + + template <> + struct pusher<variadic_args> { + static int push(lua_State*, const variadic_args& ref) { + return ref.push(); + } + }; + } // stack +} // sol + +#endif // SOL_VARIADIC_ARGS_HPP |