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epoc32/include/stdapis/boost/mpl/eval_if.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations 
     1 

     2 #ifndef BOOST_MPL_EVAL_IF_HPP_INCLUDED

     3 #define BOOST_MPL_EVAL_IF_HPP_INCLUDED

     4 

     5 // Copyright Aleksey Gurtovoy 2000-2004

     6 //

     7 // Distributed under the Boost Software License, Version 1.0. 

     8 // (See accompanying file LICENSE_1_0.txt or copy at 

     9 // http://www.boost.org/LICENSE_1_0.txt)

    10 //

    11 // See http://www.boost.org/libs/mpl for documentation.

    12 

    13 // $Source: /cvsroot/boost/boost/boost/mpl/eval_if.hpp,v $

    14 // $Date: 2004/11/28 01:54:10 $

    15 // $Revision: 1.3 $

    16 

    17 #include <boost/mpl/if.hpp>

    18 #include <boost/mpl/aux_/na_spec.hpp>

    19 #include <boost/mpl/aux_/lambda_support.hpp>

    20 #include <boost/mpl/aux_/config/msvc.hpp>

    21 #include <boost/mpl/aux_/config/gcc.hpp>

    22 #include <boost/mpl/aux_/config/workaround.hpp>

    23 

    24 namespace boost { namespace mpl {

    25 

    26 template<

    27       typename BOOST_MPL_AUX_NA_PARAM(C)

    28     , typename BOOST_MPL_AUX_NA_PARAM(F1)

    29     , typename BOOST_MPL_AUX_NA_PARAM(F2)

    30     >

    31 struct eval_if

    32 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) \

    33      || ( BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, >= 0x0300) \

    34         && BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, BOOST_TESTED_AT(0x0304)) \

    35         )

    36 {

    37     typedef typename if_<C,F1,F2>::type f_;

    38     typedef typename f_::type type;

    39 #else

    40     : if_<C,F1,F2>::type

    41 {

    42 #endif

    43     BOOST_MPL_AUX_LAMBDA_SUPPORT(3,eval_if,(C,F1,F2))

    44 };

    45 

    46 // (almost) copy & paste in order to save one more 

    47 // recursively nested template instantiation to user

    48 template<

    49       bool C

    50     , typename F1

    51     , typename F2

    52     >

    53 struct eval_if_c

    54 #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) \

    55      || ( BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, >= 0x0300) \

    56         && BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, BOOST_TESTED_AT(0x0304)) \

    57         )

    58 {

    59     typedef typename if_c<C,F1,F2>::type f_;

    60     typedef typename f_::type type;

    61 #else

    62     : if_c<C,F1,F2>::type

    63 {

    64 #endif

    65 };

    66 

    67 BOOST_MPL_AUX_NA_SPEC(3, eval_if)

    68 

    69 }}

    70 

    71 #endif // BOOST_MPL_EVAL_IF_HPP_INCLUDED
test