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/* Box<ITV>::Status class implementation: inline functions.
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)
This file is part of the Parma Polyhedra Library (PPL).
The PPL is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The PPL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */
#ifndef PPL_Box_Status_inlines_hh
#define PPL_Box_Status_inlines_hh 1
#include <string>
namespace Parma_Polyhedra_Library {
template <typename ITV>
inline
Box<ITV>::Status::Status(flags_t mask)
: flags(mask) {
}
template <typename ITV>
inline
Box<ITV>::Status::Status(const Status& y)
: flags(y.flags) {
}
template <typename ITV>
template <typename Other_ITV>
inline
Box<ITV>::Status::Status(const typename Box<Other_ITV>::Status& y)
: flags(y.flags) {
}
template <typename ITV>
inline
Box<ITV>::Status::Status()
: flags(NONE) {
}
template <typename ITV>
inline bool
Box<ITV>::Status::test_all(flags_t mask) const {
return (flags & mask) == mask;
}
template <typename ITV>
inline bool
Box<ITV>::Status::test_any(flags_t mask) const {
return flags & mask;
}
template <typename ITV>
inline void
Box<ITV>::Status::set(flags_t mask) {
flags |= mask;
}
template <typename ITV>
inline void
Box<ITV>::Status::reset(flags_t mask) {
flags &= ~mask;
}
template <typename ITV>
inline bool
Box<ITV>::Status::test_empty_up_to_date() const {
return test_any(EMPTY_UP_TO_DATE);
}
template <typename ITV>
inline void
Box<ITV>::Status::reset_empty_up_to_date() {
reset(EMPTY_UP_TO_DATE);
}
template <typename ITV>
inline void
Box<ITV>::Status::set_empty_up_to_date() {
set(EMPTY_UP_TO_DATE);
}
template <typename ITV>
inline bool
Box<ITV>::Status::test_empty() const {
return test_any(EMPTY);
}
template <typename ITV>
inline void
Box<ITV>::Status::reset_empty() {
reset(EMPTY);
}
template <typename ITV>
inline void
Box<ITV>::Status::set_empty() {
set(EMPTY);
}
template <typename ITV>
inline bool
Box<ITV>::Status::test_universe() const {
return test_any(UNIVERSE);
}
template <typename ITV>
inline void
Box<ITV>::Status::reset_universe() {
reset(UNIVERSE);
}
template <typename ITV>
inline void
Box<ITV>::Status::set_universe() {
set(UNIVERSE);
}
template <typename ITV>
bool
Box<ITV>::Status::OK() const {
if (test_empty_up_to_date()
&& test_empty()
&& test_universe()) {
#ifndef NDEBUG
std::cerr
<< "The status asserts emptiness and universality at the same time."
<< std::endl;
#endif
return false;
}
// Any other case is OK.
return true;
}
namespace Implementation {
namespace Boxes {
// These are the keywords that indicate the individual assertions.
const std::string empty_up_to_date = "EUP";
const std::string empty = "EM";
const std::string universe = "UN";
const char yes = '+';
const char no = '-';
const char sep = ' ';
/*! \relates Parma_Polyhedra_Library::Box::Status
Reads a keyword and its associated on/off flag from \p s.
Returns <CODE>true</CODE> if the operation is successful,
returns <CODE>false</CODE> otherwise.
When successful, \p positive is set to <CODE>true</CODE> if the flag
is on; it is set to <CODE>false</CODE> otherwise.
*/
inline bool
get_field(std::istream& s, const std::string& keyword, bool& positive) {
std::string str;
if (!(s >> str)
|| (str[0] != yes && str[0] != no)
|| str.substr(1) != keyword)
return false;
positive = (str[0] == yes);
return true;
}
} // namespace Boxes
} // namespace Implementation
template <typename ITV>
void
Box<ITV>::Status::ascii_dump(std::ostream& s) const {
using namespace Implementation::Boxes;
s << (test_empty_up_to_date() ? yes : no) << empty_up_to_date << sep
<< (test_empty() ? yes : no) << empty << sep
<< (test_universe() ? yes : no) << universe << sep;
}
PPL_OUTPUT_TEMPLATE_DEFINITIONS_ASCII_ONLY(ITV, Box<ITV>::Status)
template <typename ITV>
bool
Box<ITV>::Status::ascii_load(std::istream& s) {
using namespace Implementation::Boxes;
PPL_UNINITIALIZED(bool, positive);
if (!get_field(s, Implementation::Boxes::empty_up_to_date, positive))
return false;
if (positive)
set_empty_up_to_date();
if (!get_field(s, Implementation::Boxes::empty, positive))
return false;
if (positive)
set_empty();
if (!get_field(s, universe, positive))
return false;
if (positive)
set_universe();
else
reset_universe();
// Check invariants.
PPL_ASSERT(OK());
return true;
}
} // namespace Parma_Polyhedra_Library
#endif // !defined(PPL_Box_Status_inlines_hh)
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