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86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
// Copyright (c) 2003 Daniel Wallin and Arvid Norberg
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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// OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef LUABIND_PRIMITIVES_HPP_INCLUDED
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#define LUABIND_PRIMITIVES_HPP_INCLUDED
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#include <algorithm>
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#include <cstring>
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#include <luabind/config.hpp>
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#include <luabind/detail/yes_no.hpp>
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namespace luabind { namespace detail
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{
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template<class T>
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struct identity
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{
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typedef T type;
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};
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template<class T>
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struct type_ {};
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struct null_type {};
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/* typedef char yes_t;
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typedef double no_t;*/
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struct lua_to_cpp {};
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struct cpp_to_lua {};
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template<class T> struct by_value {};
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template<class T> struct by_reference {};
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template<class T> struct by_const_reference {};
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template<class T> struct by_pointer {};
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template<class T> struct by_const_pointer {};
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struct converter_policy_tag {};
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struct ltstr
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{
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bool operator()(const char* s1, const char* s2) const { return std::strcmp(s1, s2) < 0; }
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};
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template<int N>
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struct aligned
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{
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char storage[N];
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};
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// returns the offset added to a Derived* when cast to a Base*
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// TODO: return ptrdiff
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template<class Derived, class Base>
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int ptr_offset(type_<Derived>, type_<Base>)
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{
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aligned<sizeof(Derived)> obj;
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Derived* ptr = reinterpret_cast<Derived*>(&obj);
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return int(static_cast<char*>(static_cast<void*>(static_cast<Base*>(ptr)))
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- static_cast<char*>(static_cast<void*>(ptr)));
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}
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}}
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#endif // LUABIND_PRIMITIVES_HPP_INCLUDED
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