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128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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https://github.com/vinniefalco/LuaBridge
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Copyright 2012, Vinnie Falco <vinnie.falco@gmail.com>
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License: The MIT License (http://www.opensource.org/licenses/mit-license.php)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, 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,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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//==============================================================================
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#pragma once
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namespace luabridge {
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//------------------------------------------------------------------------------
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/**
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Container traits.
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Unspecialized ContainerTraits has the isNotContainer typedef for SFINAE.
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All user defined containers must supply an appropriate specialization for
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ContinerTraits (without the typedef isNotContainer). The containers that
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come with LuaBridge also come with the appropriate ContainerTraits
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specialization. See the corresponding declaration for details.
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A specialization of ContainerTraits for some generic type ContainerType
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looks like this:
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template <class T>
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struct ContainerTraits <ContainerType <T> >
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{
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typedef typename T Type;
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static T* get (ContainerType <T> const& c)
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{
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return c.get (); // Implementation-dependent on ContainerType
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}
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};
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*/
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template <class T>
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struct ContainerTraits
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{
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typedef bool isNotContainer;
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typedef T Type;
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};
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//------------------------------------------------------------------------------
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/**
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Type traits.
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Specializations return information about a type.
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*/
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struct TypeTraits
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{
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/** Determine if type T is a container.
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To be considered a container, there must be a specialization of
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ContainerTraits with the required fields.
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*/
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template <typename T>
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class isContainer
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{
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private:
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typedef char yes[1]; // sizeof (yes) == 1
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typedef char no [2]; // sizeof (no) == 2
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template <typename C>
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static no& test (typename C::isNotContainer*);
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template <typename>
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static yes& test (...);
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public:
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static const bool value = sizeof (test <ContainerTraits <T> >(0)) == sizeof (yes);
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};
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/** Determine if T is const qualified.
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*/
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/** @{ */
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template <class T>
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struct isConst
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{
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static bool const value = false;
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};
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template <class T>
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struct isConst <T const>
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{
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static bool const value = true;
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};
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/** @} */
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/** Remove the const qualifier from T.
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*/
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/** @{ */
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template <class T>
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struct removeConst
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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 removeConst <T const>
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{
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typedef T Type;
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};
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/**@}*/
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};
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} // namespace luabridge
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