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88155d44e0
sol::this_state is a transparent argument that gets the current state at any position in any callback sol::variadic_args allows a person to get something that can reference the "rest of the arguments", though it doesn't enforce that it has to be the last argument Closes #57 Closes #59 Closes #60
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_VARIADIC_ARGS_HPP
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#define SOL_VARIADIC_ARGS_HPP
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#include "stack.hpp"
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#include "stack_proxy.hpp"
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namespace sol {
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struct variadic_args {
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private:
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lua_State* L;
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int index;
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int stacktop;
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public:
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variadic_args() = default;
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variadic_args(lua_State* L, int index = -1): L(L), index(lua_absindex(L, index)), stacktop(lua_gettop(L)) {}
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variadic_args(const variadic_args&) = default;
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variadic_args& operator=(const variadic_args&) = default;
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variadic_args(variadic_args&& o) : L(o.L), index(o.index), stacktop(o.stacktop) {
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but will be thorough
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o.L = nullptr;
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o.index = 0;
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o.stacktop = 0;
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}
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variadic_args& operator=(variadic_args&& o) {
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L = o.L;
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index = o.index;
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stacktop = o.stacktop;
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but will be thorough
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o.L = nullptr;
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o.index = 0;
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o.stacktop = 0;
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return *this;
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}
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int push () const {
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int pushcount = 0;
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for (int i = index; i <= stacktop; ++i) {
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lua_pushvalue(L, i);
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pushcount += 1;
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}
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return pushcount;
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}
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template<typename T>
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decltype(auto) get(int start = 0) const {
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return stack::get<T>(L, index + start);
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}
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stack_proxy operator[](int start) const {
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return stack_proxy(L, index + start);
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}
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lua_State* lua_state() const { return L; };
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int stack_index() const { return index; };
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int leftover_count() const { return stacktop - (index - 1); }
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int top() const { return stacktop; }
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};
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namespace stack {
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template <>
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struct getter<variadic_args> {
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static variadic_args get(lua_State* L, int index = -1) {
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return variadic_args(L, index);
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}
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};
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template <>
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struct pusher<variadic_args> {
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static int push(lua_State*, const variadic_args& ref) {
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return ref.push();
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}
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};
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} // stack
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} // sol
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#endif // SOL_VARIADIC_ARGS_HPP
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