Boost-Graph
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include/boost/utility/in_place_factory.hpp
include/boost/utility/result_of.hpp
include/boost/utility/typed_in_place_factory.hpp
include/boost/utility/value_init.hpp
include/boost/variant.hpp
include/boost/variant/apply_visitor.hpp
include/boost/variant/bad_visit.hpp
include/boost/variant/detail/apply_visitor_binary.hpp
include/boost/variant/detail/apply_visitor_delayed.hpp
include/boost/variant/detail/apply_visitor_unary.hpp
include/boost/variant/detail/backup_holder.hpp
include/boost/variant/detail/bool_trait_def.hpp
include/boost/variant/detail/bool_trait_undef.hpp
include/boost/variant/detail/cast_storage.hpp
include/boost/variant/detail/config.hpp
include/boost/variant/detail/enable_recursive.hpp
include/boost/variant/detail/enable_recursive_fwd.hpp
include/boost/variant/detail/forced_return.hpp
include/boost/variant/detail/generic_result_type.hpp
include/boost/variant/detail/has_nothrow_move.hpp
include/boost/variant/detail/has_trivial_move.hpp
include/boost/regex/v4/basic_regex_parser.hpp view on Meta::CPAN
// startmark state:
//
if(this->m_traits.syntax_type(*m_position) == regex_constants::syntax_hash)
{
while((m_position != m_end)
&& (this->m_traits.syntax_type(*m_position++) != regex_constants::syntax_close_mark))
{}
return true;
}
//
// backup some state, and prepare the way:
//
int markid = 0;
std::ptrdiff_t jump_offset = 0;
re_brace* pb = static_cast<re_brace*>(this->append_state(syntax_element_startmark, sizeof(re_brace)));
std::ptrdiff_t last_paren_start = this->getoffset(pb);
// back up insertion point for alternations, and set new point:
std::ptrdiff_t last_alt_point = m_alt_insert_point;
this->m_pdata->m_data.align();
m_alt_insert_point = this->m_pdata->m_data.size();
std::ptrdiff_t expected_alt_point = m_alt_insert_point;
include/boost/regex/v4/perl_matcher.hpp view on Meta::CPAN
void push_assertion(const re_syntax_base* ps, bool positive);
void push_alt(const re_syntax_base* ps);
void push_repeater_count(int i, repeater_count<BidiIterator>** s);
void push_single_repeat(std::size_t c, const re_repeat* r, BidiIterator last_position, int id);
void push_non_greedy_repeat(const re_syntax_base* ps);
// pointer to base of stack:
saved_state* m_stack_base;
// pointer to current stack position:
saved_state* m_backup_state;
// determines what value to return when unwinding from recursion,
// allows for mixed recursive/non-recursive algorithm:
bool m_recursive_result;
// how many memory blocks have we used up?:
unsigned used_block_count;
#endif
// these operations aren't allowed, so are declared private,
// bodies are provided to keep explicit-instantiation requests happy:
perl_matcher& operator=(const perl_matcher&)
include/boost/regex/v4/perl_matcher_common.hpp view on Meta::CPAN
}
if(m_match_flags & match_posix)
{
m_temp_match.reset(new match_results<BidiIterator, Allocator>());
m_presult = m_temp_match.get();
}
else
m_presult = &m_result;
#ifdef BOOST_REGEX_NON_RECURSIVE
m_stack_base = 0;
m_backup_state = 0;
#endif
// find the value to use for matching word boundaries:
const char_type w = static_cast<char_type>('w');
m_word_mask = traits_inst.lookup_classname(&w, &w+1);
// find bitmask to use for matching '.':
match_any_mask = static_cast<unsigned char>((f & match_not_dot_newline) ? re_detail::test_not_newline : re_detail::test_newline);
}
template <class BidiIterator, class Allocator, class traits>
void perl_matcher<BidiIterator, Allocator, traits>::estimate_max_state_count(std::random_access_iterator_tag*)
include/boost/regex/v4/perl_matcher_common.hpp view on Meta::CPAN
#else
return match_imp();
#endif
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::match_imp()
{
// initialise our stack if we are non-recursive:
#ifdef BOOST_REGEX_NON_RECURSIVE
save_state_init init(&m_stack_base, &m_backup_state);
used_block_count = BOOST_REGEX_MAX_BLOCKS;
#if !defined(BOOST_NO_EXCEPTIONS)
try{
#endif
#endif
// reset our state machine:
position = base;
search_base = base;
state_count = 0;
include/boost/regex/v4/perl_matcher_common.hpp view on Meta::CPAN
&perl_matcher<BidiIterator, Allocator, traits>::find_restart_word,
&perl_matcher<BidiIterator, Allocator, traits>::find_restart_line,
&perl_matcher<BidiIterator, Allocator, traits>::find_restart_buf,
&perl_matcher<BidiIterator, Allocator, traits>::match_prefix,
&perl_matcher<BidiIterator, Allocator, traits>::find_restart_lit,
&perl_matcher<BidiIterator, Allocator, traits>::find_restart_lit,
};
// initialise our stack if we are non-recursive:
#ifdef BOOST_REGEX_NON_RECURSIVE
save_state_init init(&m_stack_base, &m_backup_state);
used_block_count = BOOST_REGEX_MAX_BLOCKS;
#if !defined(BOOST_NO_EXCEPTIONS)
try{
#endif
#endif
state_count = 0;
if((m_match_flags & regex_constants::match_init) == 0)
{
// reset our state machine:
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
return m_recursive_result;
}
template <class BidiIterator, class Allocator, class traits>
void perl_matcher<BidiIterator, Allocator, traits>::extend_stack()
{
if(used_block_count)
{
--used_block_count;
saved_state* stack_base;
saved_state* backup_state;
stack_base = static_cast<saved_state*>(get_mem_block());
backup_state = reinterpret_cast<saved_state*>(reinterpret_cast<char*>(stack_base)+BOOST_REGEX_BLOCKSIZE);
saved_extra_block* block = static_cast<saved_extra_block*>(backup_state);
--block;
(void) new (block) saved_extra_block(m_stack_base, m_backup_state);
m_stack_base = stack_base;
m_backup_state = block;
}
else
raise_error(traits_inst, regex_constants::error_size);
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_matched_paren(int index, const sub_match<BidiIterator>& sub)
{
BOOST_ASSERT(index);
saved_matched_paren<BidiIterator>* pmp = static_cast<saved_matched_paren<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_matched_paren<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_matched_paren<BidiIterator>(index, sub);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_recursion_stopper()
{
saved_state* pmp = m_backup_state;
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = m_backup_state;
--pmp;
}
(void) new (pmp)saved_state(saved_type_recurse);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_assertion(const re_syntax_base* ps, bool positive)
{
saved_assertion<BidiIterator>* pmp = static_cast<saved_assertion<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_assertion<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_assertion<BidiIterator>(positive, ps, position);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_alt(const re_syntax_base* ps)
{
saved_position<BidiIterator>* pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_position<BidiIterator>(ps, position, saved_state_alt);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_non_greedy_repeat(const re_syntax_base* ps)
{
saved_position<BidiIterator>* pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_position<BidiIterator>(ps, position, saved_state_non_greedy_long_repeat);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_repeater_count(int i, repeater_count<BidiIterator>** s)
{
saved_repeater<BidiIterator>* pmp = static_cast<saved_repeater<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_repeater<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_repeater<BidiIterator>(i, s, position);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::push_single_repeat(std::size_t c, const re_repeat* r, BidiIterator last_position, int id)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
--pmp;
if(pmp < m_stack_base)
{
extend_stack();
pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
--pmp;
}
(void) new (pmp)saved_single_repeat<BidiIterator>(c, r, last_position, id);
m_backup_state = pmp;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::match_startmark()
{
int index = static_cast<const re_brace*>(pstate)->index;
switch(index)
{
case 0:
pstate = pstate->next.p;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
};
m_recursive_result = have_match;
unwind_proc_type unwinder;
bool cont;
//
// keep unwinding our stack until we have something to do:
//
do
{
unwinder = s_unwind_table[m_backup_state->id];
cont = (this->*unwinder)(m_recursive_result);
}while(cont);
//
// return true if we have more states to try:
//
return pstate ? true : false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_end(bool)
{
pstate = 0; // nothing left to search
return false; // end of stack nothing more to search
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_paren(bool have_match)
{
saved_matched_paren<BidiIterator>* pmp = static_cast<saved_matched_paren<BidiIterator>*>(m_backup_state);
// restore previous values if no match was found:
if(have_match == false)
{
m_presult->set_first(pmp->sub.first, pmp->index);
m_presult->set_second(pmp->sub.second, pmp->index, pmp->sub.matched);
}
#ifdef BOOST_REGEX_MATCH_EXTRA
//
// we have a match, push the capture information onto the stack:
//
else if(pmp->sub.matched && (match_extra & m_match_flags))
((*m_presult)[pmp->index]).get_captures().push_back(pmp->sub);
#endif
// unwind stack:
m_backup_state = pmp+1;
boost::re_detail::inplace_destroy(pmp);
return true; // keep looking
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_recursion_stopper(bool)
{
boost::re_detail::inplace_destroy(m_backup_state++);
pstate = 0; // nothing left to search
return false; // end of stack nothing more to search
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_assertion(bool r)
{
saved_assertion<BidiIterator>* pmp = static_cast<saved_assertion<BidiIterator>*>(m_backup_state);
pstate = pmp->pstate;
position = pmp->position;
bool result = (r == pmp->positive);
m_recursive_result = pmp->positive ? r : !r;
boost::re_detail::inplace_destroy(pmp++);
m_backup_state = pmp;
return !result; // return false if the assertion was matched to stop search.
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_alt(bool r)
{
saved_position<BidiIterator>* pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
if(!r)
{
pstate = pmp->pstate;
position = pmp->position;
}
boost::re_detail::inplace_destroy(pmp++);
m_backup_state = pmp;
return r;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_repeater_counter(bool)
{
saved_repeater<BidiIterator>* pmp = static_cast<saved_repeater<BidiIterator>*>(m_backup_state);
boost::re_detail::inplace_destroy(pmp++);
m_backup_state = pmp;
return true; // keep looking
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_extra_block(bool)
{
saved_extra_block* pmp = static_cast<saved_extra_block*>(m_backup_state);
void* condemmed = m_stack_base;
m_stack_base = pmp->base;
m_backup_state = pmp->end;
boost::re_detail::inplace_destroy(pmp);
put_mem_block(condemmed);
return true; // keep looking
}
template <class BidiIterator, class Allocator, class traits>
inline void perl_matcher<BidiIterator, Allocator, traits>::destroy_single_repeat()
{
saved_single_repeat<BidiIterator>* p = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
boost::re_detail::inplace_destroy(p++);
m_backup_state = p;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_greedy_single_repeat(bool r)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->count = count + rep->min;
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_slow_dot_repeat(bool r)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->count = count;
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_fast_dot_repeat(bool r)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->count = count;
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_char_repeat(bool r)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->count = count;
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_short_set_repeat(bool r)
{
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_long_set_repeat(bool r)
{
typedef typename traits::char_class_type mask_type;
saved_single_repeat<BidiIterator>* pmp = static_cast<saved_single_repeat<BidiIterator>*>(m_backup_state);
// if we have a match, just discard this state:
if(r)
{
destroy_single_repeat();
return true;
}
const re_repeat* rep = pmp->rep;
std::size_t count = pmp->count;
include/boost/regex/v4/perl_matcher_non_recursive.hpp view on Meta::CPAN
pmp->count = count;
pmp->last_position = position;
}
pstate = rep->alt.p;
return false;
}
template <class BidiIterator, class Allocator, class traits>
bool perl_matcher<BidiIterator, Allocator, traits>::unwind_non_greedy_repeat(bool r)
{
saved_position<BidiIterator>* pmp = static_cast<saved_position<BidiIterator>*>(m_backup_state);
if(!r)
{
position = pmp->position;
pstate = pmp->pstate;
++(*next_count);
}
boost::re_detail::inplace_destroy(pmp++);
m_backup_state = pmp;
return r;
}
} // namespace re_detail
} // namespace boost
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
include/boost/regex/v4/perl_matcher_recursive.hpp view on Meta::CPAN
#define BOOST_REGEX_V4_PERL_MATCHER_RECURSIVE_HPP
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
namespace boost{
namespace re_detail{
template <class BidiIterator>
class backup_subex
{
int index;
sub_match<BidiIterator> sub;
public:
template <class A>
backup_subex(const match_results<BidiIterator, A>& w, int i)
: index(i), sub(w[i], false) {}
template <class A>
void restore(match_results<BidiIterator, A>& w)
{
w.set_first(sub.first, index);
w.set_second(sub.second, index, sub.matched);
}
const sub_match<BidiIterator>& get() { return sub; }
};
include/boost/regex/v4/perl_matcher_recursive.hpp view on Meta::CPAN
else
pstate = alt->alt.p;
break;
}
}
default:
{
BOOST_ASSERT(index > 0);
if((m_match_flags & match_nosubs) == 0)
{
backup_subex<BidiIterator> sub(*m_presult, index);
m_presult->set_first(position, index);
pstate = pstate->next.p;
r = match_all_states();
if(r == false)
sub.restore(*m_presult);
#ifdef BOOST_REGEX_MATCH_EXTRA
//
// we have a match, push the capture information onto the stack:
//
else if(sub.get().matched && (match_extra & m_match_flags))
include/boost/variant/detail/backup_holder.hpp view on Meta::CPAN
//-----------------------------------------------------------------------------
// boost variant/detail/backup_holder.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2003
// Eric Friedman
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_VARIANT_DETAIL_BACKUP_HOLDER_HPP
#define BOOST_VARIANT_DETAIL_BACKUP_HOLDER_HPP
#include "boost/assert.hpp"
namespace boost {
namespace detail { namespace variant {
template <typename T>
class backup_holder
{
private: // representation
T* backup_;
public: // structors
~backup_holder()
{
delete backup_;
}
explicit backup_holder(T* backup)
: backup_(backup)
{
}
backup_holder(const backup_holder&);
public: // modifiers
backup_holder& operator=(const backup_holder& rhs)
{
*backup_ = rhs.get();
return *this;
}
backup_holder& operator=(const T& rhs)
{
*backup_ = rhs;
return *this;
}
void swap(backup_holder& rhs)
{
T* tmp = rhs.backup_;
rhs.backup_ = this->backup_;
this->backup_ = tmp;
}
public: // queries
T& get()
{
return *backup_;
}
const T& get() const
{
return *backup_;
}
};
template <typename T>
backup_holder<T>::backup_holder(const backup_holder&)
: backup_(0)
{
// not intended for copy, but do not want to prohibit syntactically
BOOST_ASSERT(false);
}
template <typename T>
void swap(backup_holder<T>& lhs, backup_holder<T>& rhs)
{
lhs.swap(rhs);
}
}} // namespace detail::variant
} // namespace boost
#endif // BOOST_VARIANT_DETAIL_BACKUP_HOLDER_HPP
include/boost/variant/detail/visitation_impl.hpp view on Meta::CPAN
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_VARIANT_DETAIL_VISITATION_IMPL_HPP
#define BOOST_VARIANT_DETAIL_VISITATION_IMPL_HPP
#include "boost/config.hpp"
#include "boost/variant/detail/backup_holder.hpp"
#include "boost/variant/detail/cast_storage.hpp"
#include "boost/variant/detail/forced_return.hpp"
#include "boost/variant/detail/generic_result_type.hpp"
#include "boost/assert.hpp"
#include "boost/mpl/eval_if.hpp"
#include "boost/mpl/bool.hpp"
#include "boost/mpl/identity.hpp"
#include "boost/mpl/int.hpp"
#include "boost/mpl/next.hpp"
include/boost/variant/detail/visitation_impl.hpp view on Meta::CPAN
// (detail) function template visitation_impl_invoke
//
// Invokes the given visitor on the specified type in the given storage.
//
template <typename Visitor, typename VoidPtrCV, typename T>
inline
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
visitation_impl_invoke_impl(
int, Visitor& visitor, VoidPtrCV storage, T*
, mpl::true_// never_uses_backup
)
{
return visitor.internal_visit(
cast_storage<T>(storage), 1L
);
}
template <typename Visitor, typename VoidPtrCV, typename T>
inline
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
visitation_impl_invoke_impl(
int internal_which, Visitor& visitor, VoidPtrCV storage, T*
, mpl::false_// never_uses_backup
)
{
if (internal_which >= 0)
{
return visitor.internal_visit(
cast_storage<T>(storage), 1L
);
}
else
{
return visitor.internal_visit(
cast_storage< backup_holder<T> >(storage), 1L
);
}
}
template <typename Visitor, typename VoidPtrCV, typename T, typename NoBackupFlag>
inline
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
visitation_impl_invoke(
int internal_which, Visitor& visitor, VoidPtrCV storage, T* t
, NoBackupFlag
, int
)
{
typedef typename mpl::or_<
NoBackupFlag
, has_nothrow_move_constructor<T>
, has_nothrow_copy<T>
>::type never_uses_backup;
return visitation_impl_invoke_impl(
internal_which, visitor, storage, t
, never_uses_backup()
);
}
template <typename Visitor, typename VoidPtrCV, typename NBF>
inline
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
visitation_impl_invoke(int, Visitor&, VoidPtrCV, apply_visitor_unrolled*, NBF, long)
{
// should never be here at runtime:
BOOST_ASSERT(false);
include/boost/variant/detail/visitation_impl.hpp view on Meta::CPAN
typename Which, typename step0
, typename Visitor, typename VoidPtrCV
, typename NoBackupFlag
>
inline
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
visitation_impl(
const int internal_which, const int logical_which
, Visitor& visitor, VoidPtrCV storage
, mpl::false_ // is_apply_visitor_unrolled
, NoBackupFlag no_backup_flag
, Which* = 0, step0* = 0
)
{
// Typedef apply_visitor_unrolled steps and associated types...
# define BOOST_VARIANT_AUX_APPLY_VISITOR_STEP_TYPEDEF(z, N, _) \
typedef typename BOOST_PP_CAT(step,N)::type BOOST_PP_CAT(T,N); \
typedef typename BOOST_PP_CAT(step,N)::next \
BOOST_PP_CAT(step, BOOST_PP_INC(N)); \
/**/
include/boost/variant/detail/visitation_impl.hpp view on Meta::CPAN
// ...switch on the target which-index value...
switch (logical_which)
{
// ...applying the appropriate case:
# define BOOST_VARIANT_AUX_APPLY_VISITOR_STEP_CASE(z, N, _) \
case (Which::value + (N)): \
return visitation_impl_invoke( \
internal_which, visitor, storage \
, static_cast<BOOST_PP_CAT(T,N)*>(0) \
, no_backup_flag, 1L \
); \
/**/
BOOST_PP_REPEAT(
BOOST_VARIANT_VISITATION_UNROLLING_LIMIT
, BOOST_VARIANT_AUX_APPLY_VISITOR_STEP_CASE
, _
)
# undef BOOST_VARIANT_AUX_APPLY_VISITOR_STEP_CASE
include/boost/variant/detail/visitation_impl.hpp view on Meta::CPAN
next_step;
typedef typename next_step::type next_type;
typedef typename is_same< next_type,apply_visitor_unrolled >::type
is_apply_visitor_unrolled;
return visitation_impl(
internal_which, logical_which
, visitor, storage
, is_apply_visitor_unrolled()
, no_backup_flag
, static_cast<next_which*>(0), static_cast<next_step*>(0)
);
}
}} // namespace detail::variant
} // namespace boost
#endif // BOOST_VARIANT_DETAIL_VISITATION_IMPL_HPP
include/boost/variant/variant.hpp view on Meta::CPAN
#include <cstddef> // for std::size_t
#include <new> // for placement new
#include <typeinfo> // for typeid, std::type_info
#include "boost/variant/detail/config.hpp"
#include "boost/mpl/aux_/config/eti.hpp"
#include "boost/mpl/aux_/value_wknd.hpp"
#include "boost/variant/variant_fwd.hpp"
#include "boost/variant/detail/backup_holder.hpp"
#include "boost/variant/detail/enable_recursive_fwd.hpp"
#include "boost/variant/detail/forced_return.hpp"
#include "boost/variant/detail/initializer.hpp"
#include "boost/variant/detail/make_variant_list.hpp"
#include "boost/variant/detail/over_sequence.hpp"
#include "boost/variant/detail/visitation_impl.hpp"
#include "boost/variant/detail/generic_result_type.hpp"
#include "boost/variant/detail/has_nothrow_move.hpp"
#include "boost/variant/detail/move.hpp"
include/boost/variant/variant.hpp view on Meta::CPAN
template <typename Types, typename NeverUsesBackupFlag>
struct make_storage
{
private: // helpers, for metafunction result (below)
typedef typename mpl::eval_if<
NeverUsesBackupFlag
, mpl::identity< Types >
, mpl::push_front<
Types, backup_holder<void*>
>
>::type types;
typedef typename max_value<
types, mpl::sizeof_<mpl::_1>
>::type max_size;
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x0551))
typedef typename max_value<
include/boost/variant/variant.hpp view on Meta::CPAN
explicit copy_into(void* storage)
: storage_(storage)
{
}
public: // internal visitor interface
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(boost::detail::variant::backup_holder<T>& operand, long) const
{
new(storage_) T( operand.get() );
BOOST_VARIANT_AUX_RETURN_VOID;
}
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(const boost::detail::variant::backup_holder<T>& operand, long) const
{
new(storage_) T( operand.get() );
BOOST_VARIANT_AUX_RETURN_VOID;
}
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(const T& operand, int) const
{
new(storage_) T(operand);
include/boost/variant/variant.hpp view on Meta::CPAN
explicit assign_storage(const void* rhs_storage)
: rhs_storage_(rhs_storage)
{
}
public: // internal visitor interfaces
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(backup_holder<T>& lhs_content, long) const
{
lhs_content.get()
= static_cast< const backup_holder<T>* >(rhs_storage_)->get();
BOOST_VARIANT_AUX_RETURN_VOID;
}
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(const backup_holder<T>& lhs_content, long) const
{
lhs_content.get()
= static_cast< const backup_holder<T>* >(rhs_storage_)->get();
BOOST_VARIANT_AUX_RETURN_VOID;
}
template <typename T>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(T& lhs_content, int) const
{
// NOTE TO USER :
// Compile error here indicates one of variant's bounded types does
// not meet the requirements of the Assignable concept. Thus,
include/boost/variant/variant.hpp view on Meta::CPAN
{
typedef typename is_same<U,T>::type U_is_T;
return execute(lhs, U_is_T());
}
#endif // MSVC6 workaround
};
///////////////////////////////////////////////////////////////////////////////
// (detail) class backup_assigner
//
// Internal visitor that "assigns" the given value to the visited value,
// using backup to recover if the destroy-copy sequence fails.
//
// NOTE: This needs to be a friend of variant, as it needs access to
// indicate_which, indicate_backup_which, etc.
//
template <typename Variant, typename RhsT>
class backup_assigner
: public static_visitor<>
{
private: // representation
Variant& lhs_;
int rhs_which_;
const RhsT& rhs_content_;
public: // structors
backup_assigner(Variant& lhs, int rhs_which, const RhsT& rhs_content)
: lhs_(lhs)
, rhs_which_(rhs_which)
, rhs_content_(rhs_content)
{
}
private: // helpers, for visitor interface (below)
template <typename LhsT>
void backup_assign_impl(
LhsT& lhs_content
, mpl::true_// has_nothrow_move
)
{
// Move lhs content to backup...
LhsT backup_lhs_content(
::boost::detail::variant::move(lhs_content)
); // nothrow
// ...destroy lhs content...
lhs_content.~LhsT(); // nothrow
try
{
// ...and attempt to copy rhs content into lhs storage:
new(lhs_.storage_.address()) RhsT(rhs_content_);
}
catch (...)
{
// In case of failure, restore backup content to lhs storage...
new(lhs_.storage_.address())
LhsT(
::boost::detail::variant::move(backup_lhs_content)
); // nothrow
// ...and rethrow:
throw;
}
// In case of success, indicate new content type:
lhs_.indicate_which(rhs_which_); // nothrow
}
template <typename LhsT>
void backup_assign_impl(
LhsT& lhs_content
, mpl::false_// has_nothrow_move
)
{
// Backup lhs content...
LhsT* backup_lhs_ptr = new LhsT(lhs_content);
// ...destroy lhs content...
lhs_content.~LhsT(); // nothrow
try
{
// ...and attempt to copy rhs content into lhs storage:
new(lhs_.storage_.address()) RhsT(rhs_content_);
}
catch (...)
{
// In case of failure, copy backup pointer to lhs storage...
new(lhs_.storage_.address())
backup_holder<LhsT>( backup_lhs_ptr ); // nothrow
// ...indicate now using backup...
lhs_.indicate_backup_which( lhs_.which() ); // nothrow
// ...and rethrow:
throw;
}
// In case of success, indicate new content type...
lhs_.indicate_which(rhs_which_); // nothrow
// ...and delete backup:
delete backup_lhs_ptr; // nothrow
}
public: // visitor interface
template <typename LhsT>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(LhsT& lhs_content, int)
{
typedef typename has_nothrow_move_constructor<LhsT>::type
nothrow_move;
backup_assign_impl( lhs_content, nothrow_move() );
BOOST_VARIANT_AUX_RETURN_VOID;
}
};
///////////////////////////////////////////////////////////////////////////////
// (detail) class swap_with
//
// Visitor that swaps visited value with content of given variant.
include/boost/variant/variant.hpp view on Meta::CPAN
template <typename T>
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type)
internal_visit(const boost::detail::reference_content<T>& operand, long)
{
return internal_visit( operand.get(), 1L );
}
template <typename T>
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type)
internal_visit(boost::detail::variant::backup_holder<T>& operand, long)
{
return internal_visit( operand.get(), 1L );
}
template <typename T>
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(result_type)
internal_visit(const boost::detail::variant::backup_holder<T>& operand, long)
{
return internal_visit( operand.get(), 1L );
}
};
}} // namespace detail::variant
///////////////////////////////////////////////////////////////////////////////
// class template variant (concept inspired by Andrei Alexandrescu)
include/boost/variant/variant.hpp view on Meta::CPAN
fallback_type_;
struct has_fallback_type_
: mpl::not_<
is_same< fallback_type_, detail::variant::no_fallback_type >
>
{
};
typedef has_fallback_type_
never_uses_backup_flag;
typedef typename detail::variant::make_storage<
internal_types, never_uses_backup_flag
>::type storage_t;
private: // helpers, for representation (below)
// which_ on:
// * [0, size<internal_types>) indicates stack content
// * [-size<internal_types>, 0) indicates pointer to heap backup
// if which_ >= 0:
// * then which() -> which_
// * else which() -> -(which_ + 1)
#if !defined(BOOST_VARIANT_MINIMIZE_SIZE)
typedef int which_t;
#else // defined(BOOST_VARIANT_MINIMIZE_SIZE)
include/boost/variant/variant.hpp view on Meta::CPAN
#endif
which_t which_;
storage_t storage_;
void indicate_which(int which)
{
which_ = static_cast<which_t>( which );
}
void indicate_backup_which(int which)
{
which_ = static_cast<which_t>( -(which + 1) );
}
private: // helpers, for queries (below)
bool using_backup() const
{
return which_ < 0;
}
public: // queries
int which() const
{
// If using heap backup...
if (using_backup())
// ...then return adjusted which_:
return -(which_ + 1);
// Otherwise, return which_ directly:
return which_;
}
private: // helpers, for structors (below)
struct initializer
include/boost/variant/variant.hpp view on Meta::CPAN
return internal_visit( operand.get(), 1L );
}
template <typename T>
int internal_visit(const boost::detail::reference_content<T>& operand, long) const
{
return internal_visit( operand.get(), 1L );
}
template <typename T>
int internal_visit(boost::detail::variant::backup_holder<T>& operand, long) const
{
return internal_visit( operand.get(), 1L );
}
template <typename T>
int internal_visit(const boost::detail::variant::backup_holder<T>& operand, long) const
{
return internal_visit( operand.get(), 1L );
}
template <typename T>
int internal_visit(boost::recursive_wrapper<T>& operand, long) const
{
return internal_visit( operand.get(), 1L );
}
include/boost/variant/variant.hpp view on Meta::CPAN
operand.internal_apply_visitor(visitor);
// ...and activate the *this's primary storage on success:
indicate_which(operand.which());
}
private: // helpers, for modifiers (below)
# if !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
template <typename Variant, typename RhsT>
friend class detail::variant::backup_assigner;
# endif
// class assigner
//
// Internal visitor that "assigns" the visited value to the given variant
// by appropriate destruction and copy-construction.
//
class assigner
: public static_visitor<>
include/boost/variant/variant.hpp view on Meta::CPAN
}
template <typename RhsT>
void assign_impl(
const RhsT& rhs_content
, mpl::false_// has_nothrow_copy
, mpl::false_// has_nothrow_move_constructor
, mpl::false_// has_fallback_type
)
{
detail::variant::backup_assigner<wknd_self_t, RhsT>
visitor(lhs_, rhs_which_, rhs_content);
lhs_.internal_apply_visitor(visitor);
}
public: // internal visitor interfaces
template <typename RhsT>
BOOST_VARIANT_AUX_RETURN_VOID_TYPE
internal_visit(const RhsT& rhs_content, int)
{
include/boost/variant/variant.hpp view on Meta::CPAN
typedef typename mpl::begin<internal_types>::type first_it;
typedef typename mpl::end<internal_types>::type last_it;
typedef detail::variant::visitation_impl_step<
first_it, last_it
> first_step;
return detail::variant::visitation_impl(
internal_which, logical_which
, visitor, storage, mpl::false_()
, never_uses_backup_flag()
, static_cast<first_which*>(0), static_cast<first_step*>(0)
);
}
template <typename Visitor>
BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(
typename Visitor::result_type
)
internal_apply_visitor(Visitor& visitor)
{
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