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// Debug-mode error formatting implementation -*- C++ -*- // Copyright (C) 2003-2013 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/formatter.h * This file is a GNU debug extension to the Standard C++ Library. */ #ifndef _GLIBCXX_DEBUG_FORMATTER_H #define _GLIBCXX_DEBUG_FORMATTER_H 1 #include <bits/c++config.h> #include <bits/cpp_type_traits.h> #include <typeinfo> namespace __gnu_debug { using std::type_info; template<typename _Iterator> bool __check_singular(_Iterator&); class _Safe_sequence_base; template<typename _Iterator, typename _Sequence> class _Safe_iterator; template<typename _Iterator, typename _Sequence> class _Safe_local_iterator; template<typename _Sequence> class _Safe_sequence; 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, __msg_equal_allocs }; class _Error_formatter { /// Whether an iterator is constant, mutable, or unknown enum _Constness { __unknown_constness, __const_iterator, __mutable_iterator, __last_constness }; // 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 }; // Tags denoting the type of parameter for construction struct _Is_iterator { }; struct _Is_sequence { }; // A parameter that may be referenced by an error message struct _Parameter { enum { __unused_param, __iterator, __sequence, __integer, __string } _M_kind; 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; // When _M_kind == __sequence struct { const char* _M_name; const void* _M_address; const type_info* _M_type; } _M_sequence; // When _M_kind == __integer struct { const char* _M_name; long _M_value; } _M_integer; // When _M_kind == __string struct { const char* _M_name; const char* _M_value; } _M_string; } _M_variant; _Parameter() : _M_kind(__unused_param), _M_variant() { } _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; } _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; } 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; #ifdef __GXX_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(); #ifdef __GXX_RTTI _M_variant._M_iterator._M_seq_type = &typeid(_Sequence); #else _M_variant._M_iterator._M_seq_type = 0; #endif 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; } } 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; #ifdef __GXX_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(); #ifdef __GXX_RTTI _M_variant._M_iterator._M_seq_type = &typeid(_Sequence); #else _M_variant._M_iterator._M_seq_type = 0; #endif 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; } } 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; #ifdef __GXX_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; } 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; #ifdef __GXX_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; } 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; #ifdef __GXX_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; } 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); #ifdef __GXX_RTTI _M_variant._M_sequence._M_type = &typeid(_Sequence); #else _M_variant._M_sequence._M_type = 0; #endif } 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; #ifdef __GXX_RTTI _M_variant._M_sequence._M_type = &typeid(_Sequence); #else _M_variant._M_sequence._M_type = 0; #endif } void _M_print_field(const _Error_formatter* __formatter, const char* __name) const; void _M_print_description(const _Error_formatter* __formatter) const; }; friend struct _Parameter; 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; } 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; } 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; } 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; } const _Error_formatter& _M_message(const char* __text) const { _M_text = __text; return *this; } const _Error_formatter& _M_message(_Debug_msg_id __id) const throw (); _GLIBCXX_NORETURN void _M_error() const; 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(); } template<typename _Tp> void _M_format_word(char*, int, const char*, _Tp) const throw (); void _M_print_word(const char* __word) const; void _M_print_string(const char* __string) const; void _M_get_max_length() const throw (); enum { __max_parameters = 9 }; 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; public: static _Error_formatter _M_at(const char* __file, std::size_t __line) { return _Error_formatter(__file, __line); } }; } // namespace __gnu_debug #endif
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