Added thirdparty: boost library

thirdparty/include/boost/gil/concepts/pixel_dereference.hpp

@@ -0,0 +1,115 @@
+//
+// Copyright 2005-2007 Adobe Systems Incorporated
+//
+// Distributed under the Boost Software License, Version 1.0
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+#ifndef BOOST_GIL_CONCEPTS_PIXEL_DEREFERENCE_HPP
+#define BOOST_GIL_CONCEPTS_PIXEL_DEREFERENCE_HPP
+
+#include <boost/gil/concepts/basic.hpp>
+#include <boost/gil/concepts/concept_check.hpp>
+#include <boost/gil/concepts/fwd.hpp>
+#include <boost/gil/concepts/pixel.hpp>
+#include <boost/gil/concepts/detail/type_traits.hpp>
+
+#include <boost/concept_check.hpp>
+
+#include <cstddef>
+#include <type_traits>
+
+#if defined(BOOST_CLANG)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-pragmas"
+#pragma clang diagnostic ignored "-Wunused-local-typedefs"
+#endif
+
+#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
+#endif
+
+namespace boost { namespace gil {
+
+/// \ingroup PixelDereferenceAdaptorConcept
+/// \brief Represents a unary function object that can be invoked upon dereferencing a pixel iterator.
+///
+/// This can perform an arbitrary computation, such as color conversion or table lookup.
+/// \code
+/// concept PixelDereferenceAdaptorConcept<boost::UnaryFunctionConcept D>
+///     : DefaultConstructibleConcept<D>, CopyConstructibleConcept<D>, AssignableConcept<D>
+/// {
+///     typename const_t; where PixelDereferenceAdaptorConcept<const_t>;
+///     typename value_type; where PixelValueConcept<value_type>;
+///     typename reference;         // may be mutable
+///     typename const_reference;   // must not be mutable
+///     static const bool D::is_mutable;
+///
+///     where Convertible<value_type,result_type>;
+/// };
+/// \endcode
+template <typename D>
+struct PixelDereferenceAdaptorConcept
+{
+    void constraints()
+    {
+        gil_function_requires
+        <
+            boost::UnaryFunctionConcept
+            <
+                D,
+                typename detail::remove_const_and_reference<typename D::result_type>::type,
+                typename D::argument_type
+            >
+        >();
+        gil_function_requires<boost::DefaultConstructibleConcept<D>>();
+        gil_function_requires<boost::CopyConstructibleConcept<D>>();
+        gil_function_requires<boost::AssignableConcept<D>>();
+
+        gil_function_requires<PixelConcept
+            <
+                typename detail::remove_const_and_reference<typename D::result_type>::type
+            >>();
+
+        using const_t = typename D::const_t;
+        gil_function_requires<PixelDereferenceAdaptorConcept<const_t>>();
+
+        using value_type = typename D::value_type;
+        gil_function_requires<PixelValueConcept<value_type>>();
+
+        // TODO: Should this be concept-checked after "if you remove const and reference"? --mloskot
+        using reference = typename D::reference; // == PixelConcept (if you remove const and reference)
+        using const_reference = typename D::const_reference; // == PixelConcept (if you remove const and reference)
+
+        bool const is_mutable = D::is_mutable;
+        ignore_unused_variable_warning(is_mutable);
+    }
+    D d;
+};
+
+template <typename P>
+struct PixelDereferenceAdaptorArchetype
+{
+    using argument_type = P;
+    using result_type = P;
+    using const_t = PixelDereferenceAdaptorArchetype;
+    using value_type = typename std::remove_reference<P>::type;
+    using reference = typename std::add_lvalue_reference<P>::type;
+    using const_reference = reference;
+
+    static const bool is_mutable = false;
+    P operator()(P) const { throw; }
+};
+
+}} // namespace boost::gil
+
+#if defined(BOOST_CLANG)
+#pragma clang diagnostic pop
+#endif
+
+#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)
+#pragma GCC diagnostic pop
+#endif
+
+#endif