Generic Image Library: apply_operation_base.hpp File Reference

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# apply_operation_base.hpp File Reference

## Detailed Description

Given an object with run-time specified type (denoted as an array of Bits, dynamic index, and a static set of Types) and a generic operation, casts the object to its appropriate type and applies the operation.

Author:
  Lubomir Bourdev and Hailin Jin
  Adobe Systems Incorporated

Date:
  2005-2007
  Last updated on November 6, 2007

`#include "../../gil_config.hpp"`
`#include "../../utilities.hpp"`
`#include <boost/mpl/begin.hpp>`
`#include <boost/mpl/next.hpp>`
`#include <boost/mpl/deref.hpp>`
`#include <boost/mpl/size.hpp>`
`#include <boost/preprocessor/repeat.hpp>`

Go to the source code of this file.

## Namespaces

namespace | boost
namespace | boost::gil
namespace | boost::gil::detail

## Defines

#define | GIL_FWD_TYPEDEFS(z, N, text) T##N; typedef typename mpl::next<T##N>::type
#define | GIL_FWD_CASE(z, N, SUM) case N: return op(*gil_reinterpret_cast<typename mpl::deref<T##N>::type*>(&bits));
#define | GIL_FWD_CONST_CASE(z, N, SUM) case N: return op(*gil_reinterpret_cast_c<const typename mpl::deref<T##N>::type*>(&bits));
#define | GIL_APPLY_FWD_OP(z, N, text)
#define | GIL_GENERATE_APPLY_FWD_OPS(N) BOOST_PP_REPEAT(N, GIL_APPLY_FWD_OP, BOOST_PP_EMPTY)

## Functions

template<typename Types, typename Bits, typename Op>
Op::result_type GIL_FORCEINLINE | apply_operation_basec (const Bits &bits, std::size_t index, Op op)
template<typename Types, typename Bits, typename Op>
Op::result_type GIL_FORCEINLINE | apply_operation_base (Bits &bits, std::size_t index, Op op)
template<typename Types1, typename Types2, typename Bits1, typename Bits2, typename Op>
static Op::result_type GIL_FORCEINLINE | apply_operation_base (const Bits1 &bits1, std::size_t index1, const Bits2 &bits2, std::size_t index2, Op op)

## Define Documentation

#define GIL_APPLY_FWD_OP | ( | z,
|  | N,
|  | text |  | ) |

Value:

    template <> struct apply_operation_fwd_fn<BOOST_PP_ADD(N,1)> {                                      \
            template <typename Types, typename Bits, typename UnaryOp>                                     \
            typename UnaryOp::result_type apply(Bits& bits, std::size_t index, UnaryOp op) const {        \
                typedef typename mpl::begin<Types>::type                                             \
                BOOST_PP_REPEAT(N, GIL_FWD_TYPEDEFS, BOOST_PP_EMPTY)                                            \
                T##N;                                                                                       \
                switch (index) {                                                                            \
                    BOOST_PP_REPEAT(BOOST_PP_ADD(N,1), GIL_FWD_CASE, BOOST_PP_EMPTY)                            \
                }                                                                                           \
                throw;                                                                                      \
            }                                                                                               \
            template <typename Types, typename Bits, typename UnaryOp>                                     \
            typename UnaryOp::result_type applyc(const Bits& bits, std::size_t index, UnaryOp op) const { \
                typedef typename mpl::begin<Types>::type                                             \
                BOOST_PP_REPEAT(N, GIL_FWD_TYPEDEFS, BOOST_PP_EMPTY)                                            \
                T##N;                                                                                       \
                switch (index) {                                                                            \
                    BOOST_PP_REPEAT(BOOST_PP_ADD(N,1), GIL_FWD_CONST_CASE,BOOST_PP_EMPTY)                       \
                }                                                                                           \
                throw;                                                                                      \
            }                                                                                               \
        };