Boost C++ Libraries

Description

BOOST_FUSION_ADAPT_ASSOC_STRUCT is a macro that can be used to generate all the necessary boilerplate to make an arbitrary struct a model of Random Access Sequence and Associative Sequence.

Synopsis

BOOST_FUSION_ADAPT_ASSOC_STRUCT(
    struct_name,
    ([member_type0,] member_name0, key_type0)
    ([member_type1,] member_name1, key_type1)
    ...
    )

Semantics

The above macro generates the necessary code to adapt struct_name as a model of Random Access Sequence and Associative Sequence. The sequence of ([member_typeN,] member_nameN, key_typeN) tuples declares the type, name and key type of each of the struct members that are part of the sequence.

When member_typeN is omitted or set to auto, the type is infered with Boost.TypeOf.

The macro should be used at global scope, and struct_name should be the fully namespace qualified name of the struct to be adapted.

Header

#include <boost/fusion/adapted/struct/adapt_assoc_struct.hpp>
#include <boost/fusion/include/adapt_assoc_struct.hpp>

Example

namespace demo
{
    struct employee
    {
        std::string name;
        int age;
    };
}

namespace keys
{
    struct name;
    struct age;
}

// demo::employee is now a Fusion sequence.
// It is also an associative sequence with
// keys keys::name and keys::age present.
BOOST_FUSION_ADAPT_ASSOC_STRUCT(
    demo::employee,
    (name, keys::name)
    (age, keys::age))

// Without BOOST_PP_VARIADICS support :
BOOST_FUSION_ADAPT_ASSOC_STRUCT(
    demo::employee,
    (auto, name, keys::name),
    (auto, age, keys::name))