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// Debug-mode error formatting implementation -*- C++ -*- |
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// Copyright (C) 2003-2015 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. |
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// 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. |
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// 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. |
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// 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/>. |
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/** @file debug/formatter.h |
* This file is a GNU debug extension to the Standard C++ Library. |
*/ |
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#ifndef _GLIBCXX_DEBUG_FORMATTER_H |
#define _GLIBCXX_DEBUG_FORMATTER_H 1 |
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#include <bits/c++config.h> |
#include <bits/cpp_type_traits.h> |
#include <typeinfo> |
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namespace __gnu_debug |
{ |
using std::type_info; |
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template<typename _Iterator> |
bool __check_singular(const _Iterator&); |
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class _Safe_sequence_base; |
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template<typename _Iterator, typename _Sequence> |
class _Safe_iterator; |
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template<typename _Iterator, typename _Sequence> |
class _Safe_local_iterator; |
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template<typename _Sequence> |
class _Safe_sequence; |
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enum _Debug_msg_id |
{ |
// General checks |
__msg_valid_range, |
__msg_insert_singular, |
__msg_insert_different, |
__msg_erase_bad, |
__msg_erase_different, |
__msg_subscript_oob, |
__msg_empty, |
__msg_unpartitioned, |
__msg_unpartitioned_pred, |
__msg_unsorted, |
__msg_unsorted_pred, |
__msg_not_heap, |
__msg_not_heap_pred, |
// std::bitset checks |
__msg_bad_bitset_write, |
__msg_bad_bitset_read, |
__msg_bad_bitset_flip, |
// std::list checks |
__msg_self_splice, |
__msg_splice_alloc, |
__msg_splice_bad, |
__msg_splice_other, |
__msg_splice_overlap, |
// iterator checks |
__msg_init_singular, |
__msg_init_copy_singular, |
__msg_init_const_singular, |
__msg_copy_singular, |
__msg_bad_deref, |
__msg_bad_inc, |
__msg_bad_dec, |
__msg_iter_subscript_oob, |
__msg_advance_oob, |
__msg_retreat_oob, |
__msg_iter_compare_bad, |
__msg_compare_different, |
__msg_iter_order_bad, |
__msg_order_different, |
__msg_distance_bad, |
__msg_distance_different, |
// istream_iterator |
__msg_deref_istream, |
__msg_inc_istream, |
// ostream_iterator |
__msg_output_ostream, |
// istreambuf_iterator |
__msg_deref_istreambuf, |
__msg_inc_istreambuf, |
// forward_list |
__msg_insert_after_end, |
__msg_erase_after_bad, |
__msg_valid_range2, |
// unordered container local iterators |
__msg_local_iter_compare_bad, |
__msg_non_empty_range, |
// self move assign |
__msg_self_move_assign, |
// unordered container buckets |
__msg_bucket_index_oob, |
__msg_valid_load_factor, |
// others |
__msg_equal_allocs, |
__msg_insert_range_from_self |
}; |
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class _Error_formatter |
{ |
/// Whether an iterator is constant, mutable, or unknown |
enum _Constness |
{ |
__unknown_constness, |
__const_iterator, |
__mutable_iterator, |
__last_constness |
}; |
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// The state of the iterator (fine-grained), if we know it. |
enum _Iterator_state |
{ |
__unknown_state, |
__singular, // singular, may still be attached to a sequence |
__begin, // dereferenceable, and at the beginning |
__middle, // dereferenceable, not at the beginning |
__end, // past-the-end, may be at beginning if sequence empty |
__before_begin, // before begin |
__last_state |
}; |
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// Tags denoting the type of parameter for construction |
struct _Is_iterator { }; |
struct _Is_sequence { }; |
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// A parameter that may be referenced by an error message |
struct _Parameter |
{ |
enum |
{ |
__unused_param, |
__iterator, |
__sequence, |
__integer, |
__string |
} _M_kind; |
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union |
{ |
// When _M_kind == __iterator |
struct |
{ |
const char* _M_name; |
const void* _M_address; |
const type_info* _M_type; |
_Constness _M_constness; |
_Iterator_state _M_state; |
const void* _M_sequence; |
const type_info* _M_seq_type; |
} _M_iterator; |
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// When _M_kind == __sequence |
struct |
{ |
const char* _M_name; |
const void* _M_address; |
const type_info* _M_type; |
} _M_sequence; |
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// When _M_kind == __integer |
struct |
{ |
const char* _M_name; |
long _M_value; |
} _M_integer; |
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// When _M_kind == __string |
struct |
{ |
const char* _M_name; |
const char* _M_value; |
} _M_string; |
} _M_variant; |
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_Parameter() : _M_kind(__unused_param), _M_variant() { } |
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_Parameter(long __value, const char* __name) |
: _M_kind(__integer), _M_variant() |
{ |
_M_variant._M_integer._M_name = __name; |
_M_variant._M_integer._M_value = __value; |
} |
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_Parameter(const char* __value, const char* __name) |
: _M_kind(__string), _M_variant() |
{ |
_M_variant._M_string._M_name = __name; |
_M_variant._M_string._M_value = __value; |
} |
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template<typename _Iterator, typename _Sequence> |
_Parameter(const _Safe_iterator<_Iterator, _Sequence>& __it, |
const char* __name, _Is_iterator) |
: _M_kind(__iterator), _M_variant() |
{ |
_M_variant._M_iterator._M_name = __name; |
_M_variant._M_iterator._M_address = &__it; |
#if __cpp_rtti |
_M_variant._M_iterator._M_type = &typeid(__it); |
#else |
_M_variant._M_iterator._M_type = 0; |
#endif |
_M_variant._M_iterator._M_constness = |
std::__are_same<_Safe_iterator<_Iterator, _Sequence>, |
typename _Sequence::iterator>:: |
__value ? __mutable_iterator : __const_iterator; |
_M_variant._M_iterator._M_sequence = __it._M_get_sequence(); |
#if __cpp_rtti |
_M_variant._M_iterator._M_seq_type = &typeid(_Sequence); |
#else |
_M_variant._M_iterator._M_seq_type = 0; |
#endif |
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if (__it._M_singular()) |
_M_variant._M_iterator._M_state = __singular; |
else |
{ |
if (__it._M_is_before_begin()) |
_M_variant._M_iterator._M_state = __before_begin; |
else if (__it._M_is_end()) |
_M_variant._M_iterator._M_state = __end; |
else if (__it._M_is_begin()) |
_M_variant._M_iterator._M_state = __begin; |
else |
_M_variant._M_iterator._M_state = __middle; |
} |
} |
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template<typename _Iterator, typename _Sequence> |
_Parameter(const _Safe_local_iterator<_Iterator, _Sequence>& __it, |
const char* __name, _Is_iterator) |
: _M_kind(__iterator), _M_variant() |
{ |
_M_variant._M_iterator._M_name = __name; |
_M_variant._M_iterator._M_address = &__it; |
#if __cpp_rtti |
_M_variant._M_iterator._M_type = &typeid(__it); |
#else |
_M_variant._M_iterator._M_type = 0; |
#endif |
_M_variant._M_iterator._M_constness = |
std::__are_same<_Safe_local_iterator<_Iterator, _Sequence>, |
typename _Sequence::local_iterator>:: |
__value ? __mutable_iterator : __const_iterator; |
_M_variant._M_iterator._M_sequence = __it._M_get_sequence(); |
#if __cpp_rtti |
_M_variant._M_iterator._M_seq_type = &typeid(_Sequence); |
#else |
_M_variant._M_iterator._M_seq_type = 0; |
#endif |
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if (__it._M_singular()) |
_M_variant._M_iterator._M_state = __singular; |
else |
{ |
if (__it._M_is_end()) |
_M_variant._M_iterator._M_state = __end; |
else if (__it._M_is_begin()) |
_M_variant._M_iterator._M_state = __begin; |
else |
_M_variant._M_iterator._M_state = __middle; |
} |
} |
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template<typename _Type> |
_Parameter(const _Type*& __it, const char* __name, _Is_iterator) |
: _M_kind(__iterator), _M_variant() |
{ |
_M_variant._M_iterator._M_name = __name; |
_M_variant._M_iterator._M_address = &__it; |
#if __cpp_rtti |
_M_variant._M_iterator._M_type = &typeid(__it); |
#else |
_M_variant._M_iterator._M_type = 0; |
#endif |
_M_variant._M_iterator._M_constness = __mutable_iterator; |
_M_variant._M_iterator._M_state = __it? __unknown_state : __singular; |
_M_variant._M_iterator._M_sequence = 0; |
_M_variant._M_iterator._M_seq_type = 0; |
} |
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template<typename _Type> |
_Parameter(_Type*& __it, const char* __name, _Is_iterator) |
: _M_kind(__iterator), _M_variant() |
{ |
_M_variant._M_iterator._M_name = __name; |
_M_variant._M_iterator._M_address = &__it; |
#if __cpp_rtti |
_M_variant._M_iterator._M_type = &typeid(__it); |
#else |
_M_variant._M_iterator._M_type = 0; |
#endif |
_M_variant._M_iterator._M_constness = __const_iterator; |
_M_variant._M_iterator._M_state = __it? __unknown_state : __singular; |
_M_variant._M_iterator._M_sequence = 0; |
_M_variant._M_iterator._M_seq_type = 0; |
} |
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template<typename _Iterator> |
_Parameter(const _Iterator& __it, const char* __name, _Is_iterator) |
: _M_kind(__iterator), _M_variant() |
{ |
_M_variant._M_iterator._M_name = __name; |
_M_variant._M_iterator._M_address = &__it; |
#if __cpp_rtti |
_M_variant._M_iterator._M_type = &typeid(__it); |
#else |
_M_variant._M_iterator._M_type = 0; |
#endif |
_M_variant._M_iterator._M_constness = __unknown_constness; |
_M_variant._M_iterator._M_state = |
__gnu_debug::__check_singular(__it)? __singular : __unknown_state; |
_M_variant._M_iterator._M_sequence = 0; |
_M_variant._M_iterator._M_seq_type = 0; |
} |
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template<typename _Sequence> |
_Parameter(const _Safe_sequence<_Sequence>& __seq, |
const char* __name, _Is_sequence) |
: _M_kind(__sequence), _M_variant() |
{ |
_M_variant._M_sequence._M_name = __name; |
_M_variant._M_sequence._M_address = |
static_cast<const _Sequence*>(&__seq); |
#if __cpp_rtti |
_M_variant._M_sequence._M_type = &typeid(_Sequence); |
#else |
_M_variant._M_sequence._M_type = 0; |
#endif |
} |
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template<typename _Sequence> |
_Parameter(const _Sequence& __seq, const char* __name, _Is_sequence) |
: _M_kind(__sequence), _M_variant() |
{ |
_M_variant._M_sequence._M_name = __name; |
_M_variant._M_sequence._M_address = &__seq; |
#if __cpp_rtti |
_M_variant._M_sequence._M_type = &typeid(_Sequence); |
#else |
_M_variant._M_sequence._M_type = 0; |
#endif |
} |
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void |
_M_print_field(const _Error_formatter* __formatter, |
const char* __name) const; |
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void |
_M_print_description(const _Error_formatter* __formatter) const; |
}; |
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friend struct _Parameter; |
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public: |
template<typename _Iterator> |
const _Error_formatter& |
_M_iterator(const _Iterator& __it, const char* __name = 0) const |
{ |
if (_M_num_parameters < std::size_t(__max_parameters)) |
_M_parameters[_M_num_parameters++] = _Parameter(__it, __name, |
_Is_iterator()); |
return *this; |
} |
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const _Error_formatter& |
_M_integer(long __value, const char* __name = 0) const |
{ |
if (_M_num_parameters < std::size_t(__max_parameters)) |
_M_parameters[_M_num_parameters++] = _Parameter(__value, __name); |
return *this; |
} |
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const _Error_formatter& |
_M_string(const char* __value, const char* __name = 0) const |
{ |
if (_M_num_parameters < std::size_t(__max_parameters)) |
_M_parameters[_M_num_parameters++] = _Parameter(__value, __name); |
return *this; |
} |
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template<typename _Sequence> |
const _Error_formatter& |
_M_sequence(const _Sequence& __seq, const char* __name = 0) const |
{ |
if (_M_num_parameters < std::size_t(__max_parameters)) |
_M_parameters[_M_num_parameters++] = _Parameter(__seq, __name, |
_Is_sequence()); |
return *this; |
} |
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const _Error_formatter& |
_M_message(const char* __text) const |
{ _M_text = __text; return *this; } |
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const _Error_formatter& |
_M_message(_Debug_msg_id __id) const throw (); |
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_GLIBCXX_NORETURN void |
_M_error() const; |
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private: |
_Error_formatter(const char* __file, std::size_t __line) |
: _M_file(__file), _M_line(__line), _M_num_parameters(0), _M_text(0), |
_M_max_length(78), _M_column(1), _M_first_line(true), _M_wordwrap(false) |
{ _M_get_max_length(); } |
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template<typename _Tp> |
void |
_M_format_word(char*, int, const char*, _Tp) const throw (); |
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void |
_M_print_word(const char* __word) const; |
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void |
_M_print_string(const char* __string) const; |
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void |
_M_get_max_length() const throw (); |
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enum { __max_parameters = 9 }; |
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const char* _M_file; |
std::size_t _M_line; |
mutable _Parameter _M_parameters[__max_parameters]; |
mutable std::size_t _M_num_parameters; |
mutable const char* _M_text; |
mutable std::size_t _M_max_length; |
enum { _M_indent = 4 } ; |
mutable std::size_t _M_column; |
mutable bool _M_first_line; |
mutable bool _M_wordwrap; |
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public: |
static _Error_formatter |
_M_at(const char* __file, std::size_t __line) |
{ return _Error_formatter(__file, __line); } |
}; |
} // namespace __gnu_debug |
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#endif |