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// Debugging support implementation -*- C++ -*-

// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010

// Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option)

// any later version.

// This library 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.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

/** @file debug/macros.h

 *  This file is a GNU debug extension to the Standard C++ Library.

 */

#ifndef _GLIBCXX_DEBUG_MACROS_H

#define _GLIBCXX_DEBUG_MACROS_H 1

/**

 * Macros used by the implementation to verify certain

 * properties. These macros may only be used directly by the debug

 * wrappers. Note that these are macros (instead of the more obviously

 * @a correct choice of making them functions) because we need line and

 * file information at the call site, to minimize the distance between

 * the user error and where the error is reported.

 *

 */

#define _GLIBCXX_DEBUG_VERIFY(_Condition,_ErrorMessage)                 \

  do                                                                    \

  {                                                                     \

    if (! (_Condition))                                                 \

      __gnu_debug::_Error_formatter::_M_at(__FILE__, __LINE__)          \

          ._ErrorMessage._M_error();                                    \

  } while (false)

// Verify that [_First, _Last) forms a valid iterator range.

#define __glibcxx_check_valid_range(_First,_Last)                       \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__valid_range(_First, _Last),        \

                      _M_message(__gnu_debug::__msg_valid_range)        \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last))

/** Verify that we can insert into *this with the iterator _Position.

 *  Insertion into a container at a specific position requires that

 *  the iterator be nonsingular (i.e., either dereferenceable or

 *  past-the-end) and that it reference the sequence we are inserting

 *  into. Note that this macro is only valid when the container is a

 *  _Safe_sequence and the iterator is a _Safe_iterator.

*/

#define __glibcxx_check_insert(_Position)                               \

_GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(),                         \

                      _M_message(__gnu_debug::__msg_insert_singular) \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position));             \

_GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this),                   \

                      _M_message(__gnu_debug::__msg_insert_different) \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position))

/** Verify that we can insert the values in the iterator range

 *  [_First, _Last) into *this with the iterator _Position.  Insertion

 *  into a container at a specific position requires that the iterator

 *  be nonsingular (i.e., either dereferenceable or past-the-end),

 *  that it reference the sequence we are inserting into, and that the

 *  iterator range [_First, Last) is a valid (possibly empty)

 *  range. Note that this macro is only valid when the container is a

 *  _Safe_sequence and the iterator is a _Safe_iterator.

 *

 *  @todo We would like to be able to check for noninterference of

 *  _Position and the range [_First, _Last), but that can't (in

 *  general) be done.

*/

#define __glibcxx_check_insert_range(_Position,_First,_Last)            \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(!_Position._M_singular(),                         \

                      _M_message(__gnu_debug::__msg_insert_singular)    \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position));             \

_GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this),                   \

                      _M_message(__gnu_debug::__msg_insert_different)   \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position))

/** Verify that we can erase the element referenced by the iterator

 * _Position. We can erase the element if the _Position iterator is

 * dereferenceable and references this sequence.

*/

#define __glibcxx_check_erase(_Position)                                \

_GLIBCXX_DEBUG_VERIFY(_Position._M_dereferenceable(),                   \

                      _M_message(__gnu_debug::__msg_erase_bad)          \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position));             \

_GLIBCXX_DEBUG_VERIFY(_Position._M_attached_to(this),                   \

                      _M_message(__gnu_debug::__msg_erase_different)    \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_Position, #_Position))

/** Verify that we can erase the elements in the iterator range

 *  [_First, _Last). We can erase the elements if [_First, _Last) is a

 *  valid iterator range within this sequence.

*/

#define __glibcxx_check_erase_range(_First,_Last)                       \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(_First._M_attached_to(this),                      \

                      _M_message(__gnu_debug::__msg_erase_different)    \

                      ._M_sequence(*this, "this")                       \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last))

// Verify that the subscript _N is less than the container's size.

#define __glibcxx_check_subscript(_N)                                   \

_GLIBCXX_DEBUG_VERIFY(_N < this->size(),                                \

                      _M_message(__gnu_debug::__msg_subscript_oob)      \

                      ._M_sequence(*this, "this")                       \

                      ._M_integer(_N, #_N)                              \

                      ._M_integer(this->size(), "size"))

// Verify that the container is nonempty

#define __glibcxx_check_nonempty()                                      \

_GLIBCXX_DEBUG_VERIFY(! this->empty(),                                  \

                      _M_message(__gnu_debug::__msg_empty)              \

                      ._M_sequence(*this, "this"))

// Verify that the iterator range [_First, _Last) is sorted

#define __glibcxx_check_sorted(_First,_Last)                            \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted(_First, _Last),       \

                      _M_message(__gnu_debug::__msg_unsorted)           \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last))

/** Verify that the iterator range [_First, _Last) is sorted by the

    predicate _Pred. */

#define __glibcxx_check_sorted_pred(_First,_Last,_Pred)                 \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_sorted(_First, _Last, _Pred), \

                      _M_message(__gnu_debug::__msg_unsorted_pred)      \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Pred))

// Special variant for std::merge, std::includes, std::set_*

#define __glibcxx_check_sorted_set(_First1,_Last1,_First2)              \

__glibcxx_check_valid_range(_First1,_Last1);                            \

_GLIBCXX_DEBUG_VERIFY(                                                  \

  __gnu_debug::__check_sorted_set(_First1, _Last1, _First2),            \

  _M_message(__gnu_debug::__msg_unsorted)                               \

  ._M_iterator(_First1, #_First1)                                       \

  ._M_iterator(_Last1, #_Last1))

// Likewise with a _Pred.

#define __glibcxx_check_sorted_set_pred(_First1,_Last1,_First2,_Pred)   \

__glibcxx_check_valid_range(_First1,_Last1);                            \

_GLIBCXX_DEBUG_VERIFY(                                                  \

  __gnu_debug::__check_sorted_set(_First1, _Last1, _First2, _Pred),     \

  _M_message(__gnu_debug::__msg_unsorted_pred)                          \

  ._M_iterator(_First1, #_First1)                                       \

  ._M_iterator(_Last1, #_Last1)                                         \

  ._M_string(#_Pred))

/** Verify that the iterator range [_First, _Last) is partitioned

    w.r.t. the value _Value. */

#define __glibcxx_check_partitioned_lower(_First,_Last,_Value)          \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower(_First, _Last, \

                                                            _Value),    \

                      _M_message(__gnu_debug::__msg_unpartitioned)      \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Value))

#define __glibcxx_check_partitioned_upper(_First,_Last,_Value)          \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper(_First, _Last, \

                                                            _Value),    \

                      _M_message(__gnu_debug::__msg_unpartitioned)      \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Value))

/** Verify that the iterator range [_First, _Last) is partitioned

    w.r.t. the value _Value and predicate _Pred. */

#define __glibcxx_check_partitioned_lower_pred(_First,_Last,_Value,_Pred) \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_lower(_First, _Last, \

                                                         _Value, _Pred), \

                      _M_message(__gnu_debug::__msg_unpartitioned_pred) \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Pred)                                \

                      ._M_string(#_Value))

/** Verify that the iterator range [_First, _Last) is partitioned

    w.r.t. the value _Value and predicate _Pred. */

#define __glibcxx_check_partitioned_upper_pred(_First,_Last,_Value,_Pred) \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(__gnu_debug::__check_partitioned_upper(_First, _Last, \

                                                         _Value, _Pred), \

                      _M_message(__gnu_debug::__msg_unpartitioned_pred) \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Pred)                                \

                      ._M_string(#_Value))

// Verify that the iterator range [_First, _Last) is a heap

#define __glibcxx_check_heap(_First,_Last)                              \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(std::__is_heap(_First, _Last),                    \

                      _M_message(__gnu_debug::__msg_not_heap)           \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last))

/** Verify that the iterator range [_First, _Last) is a heap

    w.r.t. the predicate _Pred. */

#define __glibcxx_check_heap_pred(_First,_Last,_Pred)                   \

__glibcxx_check_valid_range(_First,_Last);                              \

_GLIBCXX_DEBUG_VERIFY(std::__is_heap(_First, _Last, _Pred),             \

                      _M_message(__gnu_debug::__msg_not_heap_pred)      \

                      ._M_iterator(_First, #_First)                     \

                      ._M_iterator(_Last, #_Last)                       \

                      ._M_string(#_Pred))

#ifdef _GLIBCXX_DEBUG_PEDANTIC

#  define __glibcxx_check_string(_String) _GLIBCXX_DEBUG_ASSERT(_String != 0)

#  define __glibcxx_check_string_len(_String,_Len) \

       _GLIBCXX_DEBUG_ASSERT(_String != 0 || _Len == 0)

#else

#  define __glibcxx_check_string(_String)

#  define __glibcxx_check_string_len(_String,_Len)

#endif

#endif