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is_sequence initial checkin

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[SVN r16398]
This commit is contained in:
Aleksey Gurtovoy
2002-11-25 07:07:03 +00:00
parent ad51862b48
commit 957c79bbb4
9 changed files with 242 additions and 36 deletions
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48
include/boost/mpl/aux_/begin_end_impl.hpp
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@@ -18,6 +18,7 @@
#define BOOST_MPL_AUX_BEGIN_END_IMPL_HPP_INCLUDED
#include "boost/mpl/begin_end_fwd.hpp"
#include "boost/mpl/sequence_tag_fwd.hpp"
#include "boost/mpl/aux_/traits_lambda_spec.hpp"
#include "boost/mpl/aux_/config/eti.hpp"
@@ -25,8 +26,8 @@ namespace boost {
namespace mpl {
// default implementation; conrete sequences might override it by
// specializing either the |begin_traits/end_traits| or the primary
// |begin/end| templates
// specializing either the 'begin_traits/end_traits' or the primary
// 'begin/end' templates
template< typename Tag >
struct begin_traits
@@ -46,24 +47,37 @@ struct end_traits
};
};
#if defined(BOOST_MPL_MSVC_ETI_BUG)
template<> struct begin_traits<int>
{
template< typename Sequence > struct algorithm
{
typedef int type;
};
};
// specialize 'begin_trait/end_trait' for two pre-defined tags
template<> struct end_traits<int>
{
template< typename Sequence > struct algorithm
{
typedef int type;
};
};
# define AUX_AGLORITM_TRAIT_SPEC(name, tag, result) \
template<> \
struct name##_traits<tag> \
{ \
template< typename Sequence > struct algorithm \
{ \
typedef result type; \
}; \
}; \
/**/
// a sequence with nested 'begin/end' typedefs; just query them
AUX_AGLORITM_TRAIT_SPEC(begin, nested_begin_end_tag, typename Sequence::begin)
AUX_AGLORITM_TRAIT_SPEC(end, nested_begin_end_tag, typename Sequence::end)
// if a type 'T' does not contain 'begin/end' or 'tag' members
// and doesn't specialize either 'begin/end' or 'begin_traits/end_traits'
// templates, then we end up here
AUX_AGLORITM_TRAIT_SPEC(begin, non_sequence_tag, non_sequence_tag)
AUX_AGLORITM_TRAIT_SPEC(end, non_sequence_tag, non_sequence_tag)
#if defined(BOOST_MPL_MSVC_ETI_BUG)
AUX_AGLORITM_TRAIT_SPEC(begin, int, non_sequence_tag)
AUX_AGLORITM_TRAIT_SPEC(end, int, non_sequence_tag)
#endif
# undef AUX_AGLORITM_TRAIT_SPEC
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(1,begin_traits)
BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(1,end_traits)

26
include/boost/mpl/aux_/has_begin.hpp Normal file
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@@ -0,0 +1,26 @@
//-----------------------------------------------------------------------------
// boost mpl/aux_/has_begin.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2002
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_AUX_HAS_BEGIN_HPP_INCLUDED
#define BOOST_MPL_AUX_HAS_BEGIN_HPP_INCLUDED
#include "boost/mpl/aux_/has_xxx.hpp"
namespace boost { namespace mpl { namespace aux {
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_begin, begin, true)
}}}
#endif // BOOST_MPL_AUX_HAS_BEGIN_HPP_INCLUDED

2
include/boost/mpl/aux_/has_rebind.hpp
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@@ -24,7 +24,7 @@
namespace boost { namespace mpl { namespace aux {
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_rebind_impl, rebind)
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_rebind_impl, rebind, false)
template< typename T >
struct has_rebind

26
include/boost/mpl/aux_/has_tag.hpp Normal file
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@@ -0,0 +1,26 @@
//-----------------------------------------------------------------------------
// boost mpl/aux_/has_tag.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2002
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_AUX_HAS_TAG_HPP_INCLUDED
#define BOOST_MPL_AUX_HAS_TAG_HPP_INCLUDED
#include "boost/mpl/aux_/has_xxx.hpp"
namespace boost { namespace mpl { namespace aux {
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_tag, tag, true)
}}}
#endif // BOOST_MPL_AUX_HAS_TAG_HPP_INCLUDED

18
include/boost/mpl/aux_/has_xxx.hpp
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@@ -32,7 +32,7 @@
// the implementation below is based on a USENET newsgroup's posting by
// Rani Sharoni (comp.lang.c++.moderated, 2002-03-17 07:45:09 PST)
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name, unused) \
template< typename T > \
boost::mpl::aux::yes_tag \
trait##_helper( \
@@ -66,7 +66,7 @@ namespace boost { namespace mpl { namespace aux {
struct has_xxx_tag;
}}}
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name, unused) \
template< typename T, typename name = ::boost::mpl::aux::has_xxx_tag > \
struct trait : T \
{ \
@@ -105,13 +105,13 @@ template<> struct trait<T,boost::mpl::aux::has_xxx_tag> \
/**/
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name, unused) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name, unused) \
BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, wchar_t) \
/**/
#else
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name, unused) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name, unused) \
/**/
#endif
@@ -119,18 +119,18 @@ template<> struct trait<T,boost::mpl::aux::has_xxx_tag> \
#else
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name, default_value) \
template< typename T > \
struct trait \
{ \
BOOST_STATIC_CONSTANT(bool, value = false); \
BOOST_STATIC_CONSTANT(bool, value = default_value); \
}; \
/**/
#endif // BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION
#define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_##name, name) \
BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_##name, name, false) \
/**/
#endif // BOOST_MPL_AUX_HAS_XXX_HPP_INCLUDED

10
include/boost/mpl/aux_/sequence_tag.hpp
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@@ -20,10 +20,14 @@
//#include "boost/mpl/aux_/config/internal.hpp"
#include "boost/config.hpp"
#if defined(BOOST_MPL_INTERNAL_USE_SEQUENCE_TAG) || \
defined(BOOST_MSVC) && BOOST_MSVC < 1300
# include "boost/mpl/sequence_tag.hpp"
#if !defined(BOOST_MPL_INTERNAL_USE_SEQUENCE_TAG)
# define BOOST_MPL_INTERNAL_USE_SEQUENCE_TAG
#endif
#if defined(BOOST_MPL_INTERNAL_USE_SEQUENCE_TAG) \
|| defined(BOOST_MSVC) && BOOST_MSVC < 1300
# include "boost/mpl/sequence_tag.hpp"
# define BOOST_MPL_AUX_SEQUENCE_TAG(seq) sequence_tag<seq>::type
#else

51
include/boost/mpl/is_sequence.hpp Normal file
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@@ -0,0 +1,51 @@
//-----------------------------------------------------------------------------
// boost mpl/is_sequence.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2002
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
#define BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED
#include "boost/mpl/logical/not.hpp"
#include "boost/mpl/begin_end.hpp"
#include "boost/mpl/sequence_tag_fwd.hpp"
#include "boost/mpl/aux_/void_spec.hpp"
#include "boost/mpl/aux_/lambda_support.hpp"
#include "boost/mpl/aux_/config/eti.hpp"
#include "boost/type_traits/is_same.hpp"
namespace boost { namespace mpl {
template<
typename BOOST_MPL_AUX_VOID_SPEC_PARAM(T)
>
struct is_sequence
: logical_not< is_same< typename begin<T>::type, non_sequence_tag > >
{
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_sequence,(T))
};
#if defined(BOOST_MPL_MSVC_ETI_BUG)
template<> struct is_sequence<int>
: bool_c<false>
{
};
#endif
BOOST_MPL_AUX_VOID_SPEC(1, is_sequence)
}} // namespace boost::mpl
#endif // BOOST_MPL_IS_SEQUENCE_HPP_INCLUDED

68
include/boost/mpl/sequence_tag.hpp
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@@ -17,30 +17,86 @@
#ifndef BOOST_MPL_SEQUENCE_TAG_HPP_INCLUDED
#define BOOST_MPL_SEQUENCE_TAG_HPP_INCLUDED
#include "boost/mpl/sequence_tag_fwd.hpp"
#include "boost/mpl/aux_/has_tag.hpp"
#include "boost/mpl/aux_/has_begin.hpp"
#include "boost/mpl/aux_/void_spec.hpp"
#include "boost/mpl/aux_/config/eti.hpp"
namespace boost {
namespace mpl {
#include "boost/type_traits/is_class.hpp"
namespace boost { namespace mpl {
namespace aux {
template< bool has_tag_, bool has_begin_ >
struct class_sequence_tag_impl
{
// agurt 24/nov/02: MSVC 6.5 gets confused in 'sequence_tag_impl<true>'
// specialization below, if we name it 'result_' here
template< typename Sequence > struct result2_;
};
# define AUX_CLASS_SEQUENCE_TAG_SPEC(has_tag, has_begin, result_type) \
template<> struct class_sequence_tag_impl<has_tag,has_begin> \
{ \
template< typename Sequence > struct result2_ \
{ \
typedef result_type type; \
}; \
}; \
/**/
AUX_CLASS_SEQUENCE_TAG_SPEC(true, true, typename Sequence::tag)
AUX_CLASS_SEQUENCE_TAG_SPEC(true, false, typename Sequence::tag)
AUX_CLASS_SEQUENCE_TAG_SPEC(false, true, nested_begin_end_tag)
AUX_CLASS_SEQUENCE_TAG_SPEC(false, false, non_sequence_tag)
# undef AUX_CLASS_SEQUENCE_TAG_SPEC
template< bool is_class_ >
struct sequence_tag_impl
{
template< typename Sequence > struct result_
{
typedef non_sequence_tag type;
};
};
template<>
struct sequence_tag_impl<true>
{
template< typename Sequence > struct result_
: class_sequence_tag_impl<
::boost::mpl::aux::has_tag<Sequence>::value
, ::boost::mpl::aux::has_begin<Sequence>::value
>::template result2_<Sequence>
{
};
};
} // namespace aux
template<
typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Sequence)
>
struct sequence_tag
: aux::sequence_tag_impl<
::boost::is_class<Sequence>::value
>::template result_<Sequence>
{
typedef typename Sequence::tag type;
};
#if defined(BOOST_MPL_MSVC_ETI_BUG)
template<> struct sequence_tag<int>
{
typedef int type;
typedef non_sequence_tag type;
};
#endif
BOOST_MPL_AUX_VOID_SPEC(1, sequence_tag)
} // namespace mpl
} // namespace boost
}} // namespace boost::mpl
#endif // BOOST_MPL_SEQUENCE_TAG_HPP_INCLUDED

29
include/boost/mpl/sequence_tag_fwd.hpp Normal file
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@@ -0,0 +1,29 @@
//-----------------------------------------------------------------------------
// boost mpl/sequence_tag_fwd.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2000-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appears in all copies and
// that both the copyright notice and this permission notice appear in
// supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
#ifndef BOOST_MPL_SEQUENCE_TAG_FWD_HPP_INCLUDED
#define BOOST_MPL_SEQUENCE_TAG_FWD_HPP_INCLUDED
namespace boost { namespace mpl {
struct nested_begin_end_tag;
struct non_sequence_tag;
template< typename Sequence > struct sequence_tag;
}} // namespace boost::mpl
#endif // BOOST_MPL_SEQUENCE_TAG_FWD_HPP_INCLUDED