72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
//
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// Copyright 2005-2007 Adobe Systems Incorporated
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#ifndef BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_APPLY_OPERATION_HPP
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#define BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_APPLY_OPERATION_HPP
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#include <boost/variant/apply_visitor.hpp>
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#ifdef BOOST_GIL_DOXYGEN_ONLY
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#undef BOOST_GIL_REDUCE_CODE_BLOAT
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#endif
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// Implements apply_operation for variants.
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// Optionally performs type reduction.
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#ifdef BOOST_GIL_REDUCE_CODE_BLOAT
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#include <boost/gil/extension/dynamic_image/reduce.hpp>
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#else
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namespace boost { namespace gil {
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/// \ingroup Variant
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/// \brief Invokes a generic mutable operation (represented as a unary function object) on a variant
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template <typename Types, typename UnaryOp>
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BOOST_FORCEINLINE
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auto apply_operation(variant<Types>& arg, UnaryOp op)
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#if defined(BOOST_NO_CXX14_DECLTYPE_AUTO) || defined(BOOST_NO_CXX11_DECLTYPE_N3276)
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-> typename UnaryOp::result_type
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#endif
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{
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return apply_visitor(op, arg);
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}
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/// \ingroup Variant
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/// \brief Invokes a generic constant operation (represented as a unary function object) on a variant
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template <typename Types, typename UnaryOp>
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BOOST_FORCEINLINE
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auto apply_operation(variant<Types> const& arg, UnaryOp op)
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#if defined(BOOST_NO_CXX14_DECLTYPE_AUTO) || defined(BOOST_NO_CXX11_DECLTYPE_N3276)
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-> typename UnaryOp::result_type
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#endif
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{
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return apply_visitor(op, arg);
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}
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/// \ingroup Variant
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/// \brief Invokes a generic constant operation (represented as a binary function object) on two variants
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template <typename Types1, typename Types2, typename BinaryOp>
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BOOST_FORCEINLINE
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auto apply_operation(
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variant<Types1> const& arg1,
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variant<Types2> const& arg2,
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BinaryOp op)
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#if defined(BOOST_NO_CXX14_DECLTYPE_AUTO) || defined(BOOST_NO_CXX11_DECLTYPE_N3276)
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-> typename BinaryOp::result_type
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#endif
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{
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return apply_visitor(
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op, arg1, arg2);
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}
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}} // namespace boost::gil
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#endif // defined(BOOST_GIL_REDUCE_CODE_BLOAT)
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#endif
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