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algorithmfwd.h	23.97 KB	-rw-r--r--
align.h	3.62 KB	-rw-r--r--
alloc_traits.h	26.98 KB	-rw-r--r--
allocated_ptr.h	3.25 KB	-rw-r--r--
allocator.h	9.51 KB	-rw-r--r--
atomic_base.h	56.07 KB	-rw-r--r--
atomic_futex.h	12.1 KB	-rw-r--r--
atomic_lockfree_defines.h	2.3 KB	-rw-r--r--
atomic_timed_wait.h	13.21 KB	-rw-r--r--
atomic_wait.h	12.26 KB	-rw-r--r--
basic_ios.h	15.7 KB	-rw-r--r--
basic_ios.tcc	5.94 KB	-rw-r--r--
basic_string.h	246.04 KB	-rw-r--r--
basic_string.tcc	52.92 KB	-rw-r--r--
boost_concept_check.h	26.54 KB	-rw-r--r--
c++0x_warning.h	1.44 KB	-rw-r--r--
char_traits.h	28.66 KB	-rw-r--r--
charconv.h	3.35 KB	-rw-r--r--
codecvt.h	24.9 KB	-rw-r--r--
concept_check.h	3.34 KB	-rw-r--r--
cpp_type_traits.h	13.67 KB	-rw-r--r--
cxxabi_forced.h	1.77 KB	-rw-r--r--
cxxabi_init_exception.h	2.17 KB	-rw-r--r--
deque.tcc	41.37 KB	-rw-r--r--
enable_special_members.h	12.16 KB	-rw-r--r--
erase_if.h	2.02 KB	-rw-r--r--
exception.h	2.45 KB	-rw-r--r--
exception_defines.h	1.61 KB	-rw-r--r--
exception_ptr.h	7.46 KB	-rw-r--r--
forward_list.h	49.21 KB	-rw-r--r--
forward_list.tcc	13.71 KB	-rw-r--r--
fs_dir.h	16.02 KB	-rw-r--r--
fs_fwd.h	10.52 KB	-rw-r--r--
fs_ops.h	10.49 KB	-rw-r--r--
fs_path.h	38.81 KB	-rw-r--r--
fstream.tcc	32.88 KB	-rw-r--r--
functexcept.h	3.43 KB	-rw-r--r--
functional_hash.h	8.39 KB	-rw-r--r--
gslice.h	5.39 KB	-rw-r--r--
gslice_array.h	7.71 KB	-rw-r--r--
hash_bytes.h	2.1 KB	-rw-r--r--
hashtable.h	82.96 KB	-rw-r--r--
hashtable_policy.h	60.7 KB	-rw-r--r--
indirect_array.h	7.72 KB	-rw-r--r--
invoke.h	5.92 KB	-rw-r--r--
ios_base.h	31.19 KB	-rw-r--r--
istream.tcc	30.85 KB	-rw-r--r--
iterator_concepts.h	32.55 KB	-rw-r--r--
list.tcc	16.8 KB	-rw-r--r--
locale_classes.h	24.46 KB	-rw-r--r--
locale_classes.tcc	8.18 KB	-rw-r--r--
locale_conv.h	18.38 KB	-rw-r--r--
locale_facets.h	91.46 KB	-rw-r--r--
locale_facets.tcc	39.51 KB	-rw-r--r--
locale_facets_nonio.h	68.07 KB	-rw-r--r--
locale_facets_nonio.tcc	46.42 KB	-rw-r--r--
localefwd.h	5.8 KB	-rw-r--r--
mask_array.h	7.54 KB	-rw-r--r--
max_size_type.h	22.18 KB	-rw-r--r--
memoryfwd.h	2.45 KB	-rw-r--r--
move.h	6.64 KB	-rw-r--r--
nested_exception.h	4.77 KB	-rw-r--r--
node_handle.h	10.66 KB	-rw-r--r--
ostream.tcc	12.03 KB	-rw-r--r--
ostream_insert.h	3.94 KB	-rw-r--r--
parse_numbers.h	7.79 KB	-rw-r--r--
postypes.h	8.27 KB	-rw-r--r--
predefined_ops.h	9.94 KB	-rw-r--r--
ptr_traits.h	6.55 KB	-rw-r--r--
quoted_string.h	4.93 KB	-rw-r--r--
random.h	174.18 KB	-rw-r--r--
random.tcc	103.21 KB	-rw-r--r--
range_access.h	10.46 KB	-rw-r--r--
ranges_algo.h	114.09 KB	-rw-r--r--
ranges_algobase.h	18.43 KB	-rw-r--r--
ranges_base.h	23.82 KB	-rw-r--r--
ranges_cmp.h	5.88 KB	-rw-r--r--
ranges_uninitialized.h	17.71 KB	-rw-r--r--
ranges_util.h	20.11 KB	-rw-r--r--
refwrap.h	12.9 KB	-rw-r--r--
regex.h	101.53 KB	-rw-r--r--
regex.tcc	16.11 KB	-rw-r--r--
regex_automaton.h	10.54 KB	-rw-r--r--
regex_automaton.tcc	7.54 KB	-rw-r--r--
regex_compiler.h	15.84 KB	-rw-r--r--
regex_compiler.tcc	18.71 KB	-rw-r--r--
regex_constants.h	15.18 KB	-rw-r--r--
regex_error.h	4.9 KB	-rw-r--r--
regex_executor.h	8.64 KB	-rw-r--r--
regex_executor.tcc	18.4 KB	-rw-r--r--
regex_scanner.h	6.88 KB	-rw-r--r--
regex_scanner.tcc	14.89 KB	-rw-r--r--
semaphore_base.h	7.75 KB	-rw-r--r--
shared_ptr.h	30.25 KB	-rw-r--r--
shared_ptr_atomic.h	9.64 KB	-rw-r--r--
shared_ptr_base.h	53.62 KB	-rw-r--r--
slice_array.h	9.39 KB	-rw-r--r--
specfun.h	46.13 KB	-rw-r--r--
sstream.tcc	9.91 KB	-rw-r--r--
std_abs.h	3.3 KB	-rw-r--r--
std_function.h	22.33 KB	-rw-r--r--
std_mutex.h	6.29 KB	-rw-r--r--
std_thread.h	8.39 KB	-rw-r--r--
stl_algo.h	209.67 KB	-rw-r--r--
stl_algobase.h	74.47 KB	-rw-r--r--
stl_bvector.h	34.74 KB	-rw-r--r--
stl_construct.h	8.59 KB	-rw-r--r--
stl_deque.h	75.17 KB	-rw-r--r--
stl_function.h	42.87 KB	-rw-r--r--
stl_heap.h	20.27 KB	-rw-r--r--
stl_iterator.h	77 KB	-rw-r--r--
stl_iterator_base_funcs.h	7.99 KB	-rw-r--r--
stl_iterator_base_types.h	9.44 KB	-rw-r--r--
stl_list.h	68.14 KB	-rw-r--r--
stl_map.h	53.41 KB	-rw-r--r--
stl_multimap.h	42.51 KB	-rw-r--r--
stl_multiset.h	36.79 KB	-rw-r--r--
stl_numeric.h	14.26 KB	-rw-r--r--
stl_pair.h	19.66 KB	-rw-r--r--
stl_queue.h	24.45 KB	-rw-r--r--
stl_raw_storage_iter.h	3.74 KB	-rw-r--r--
stl_relops.h	4.49 KB	-rw-r--r--
stl_set.h	37.05 KB	-rw-r--r--
stl_stack.h	12.39 KB	-rw-r--r--
stl_tempbuf.h	8.45 KB	-rw-r--r--
stl_tree.h	72.19 KB	-rw-r--r--
stl_uninitialized.h	33.22 KB	-rw-r--r--
stl_vector.h	64.37 KB	-rw-r--r--
stream_iterator.h	7.52 KB	-rw-r--r--
streambuf.tcc	4.81 KB	-rw-r--r--
streambuf_iterator.h	15.17 KB	-rw-r--r--
string_view.tcc	7 KB	-rw-r--r--
stringfwd.h	2.63 KB	-rw-r--r--
this_thread_sleep.h	3.23 KB	-rw-r--r--
uniform_int_dist.h	12.75 KB	-rw-r--r--
unique_lock.h	6 KB	-rw-r--r--
unique_ptr.h	31.77 KB	-rw-r--r--
unordered_map.h	74.87 KB	-rw-r--r--
unordered_set.h	61.46 KB	-rw-r--r--
uses_allocator.h	6.74 KB	-rw-r--r--
uses_allocator_args.h	7.38 KB	-rw-r--r--
valarray_after.h	22.74 KB	-rw-r--r--
valarray_array.h	20.8 KB	-rw-r--r--
valarray_array.tcc	7.08 KB	-rw-r--r--
valarray_before.h	18.69 KB	-rw-r--r--
vector.tcc	30.26 KB	-rw-r--r--

Code Editor : regex_scanner.h

// class template regex -*- C++ -*-

// Copyright (C) 2013-2021 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 bits/regex_scanner.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{regex}
 */

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

namespace __detail
{
  /**
   * @addtogroup regex-detail
   * @{
   */

struct _ScannerBase
  {
  public:
    /// Token types returned from the scanner.
    enum _TokenT : unsigned
    {
      _S_token_anychar,
      _S_token_ord_char,
      _S_token_oct_num,
      _S_token_hex_num,
      _S_token_backref,
      _S_token_subexpr_begin,
      _S_token_subexpr_no_group_begin,
      _S_token_subexpr_lookahead_begin, // neg if _M_value[0] == 'n'
      _S_token_subexpr_end,
      _S_token_bracket_begin,
      _S_token_bracket_neg_begin,
      _S_token_bracket_end,
      _S_token_interval_begin,
      _S_token_interval_end,
      _S_token_quoted_class,
      _S_token_char_class_name,
      _S_token_collsymbol,
      _S_token_equiv_class_name,
      _S_token_opt,
      _S_token_or,
      _S_token_closure0,
      _S_token_closure1,
      _S_token_line_begin,
      _S_token_line_end,
      _S_token_word_bound, // neg if _M_value[0] == 'n'
      _S_token_comma,
      _S_token_dup_count,
      _S_token_eof,
      _S_token_bracket_dash,
      _S_token_unknown = -1u
    };

protected:
    typedef regex_constants::syntax_option_type _FlagT;

enum _StateT
    {
      _S_state_normal,
      _S_state_in_brace,
      _S_state_in_bracket,
    };

protected:
    _ScannerBase(_FlagT __flags)
    : _M_state(_S_state_normal),
    _M_flags(__flags),
    _M_escape_tbl(_M_is_ecma()
		  ? _M_ecma_escape_tbl
		  : _M_awk_escape_tbl),
    _M_spec_char(_M_is_ecma()
		 ? _M_ecma_spec_char
		 : _M_flags & regex_constants::basic
		 ? _M_basic_spec_char
		 : _M_flags & regex_constants::extended
		 ? _M_extended_spec_char
		 : _M_flags & regex_constants::grep
		 ?  ".[\\*^$\n"
		 : _M_flags & regex_constants::egrep
		 ? ".[\\()*+?{|^$\n"
		 : _M_flags & regex_constants::awk
		 ? _M_extended_spec_char
		 : nullptr),
    _M_at_bracket_start(false)
    { __glibcxx_assert(_M_spec_char); }

protected:
    const char*
    _M_find_escape(char __c)
    {
      auto __it = _M_escape_tbl;
      for (; __it->first != '\0'; ++__it)
	if (__it->first == __c)
	  return &__it->second;
      return nullptr;
    }

bool
    _M_is_ecma() const
    { return _M_flags & regex_constants::ECMAScript; }

bool
    _M_is_basic() const
    { return _M_flags & (regex_constants::basic | regex_constants::grep); }

bool
    _M_is_extended() const
    {
      return _M_flags & (regex_constants::extended
			 | regex_constants::egrep
			 | regex_constants::awk);
    }

bool
    _M_is_grep() const
    { return _M_flags & (regex_constants::grep | regex_constants::egrep); }

bool
    _M_is_awk() const
    { return _M_flags & regex_constants::awk; }

protected:
    // TODO: Make them static in the next abi change.
    const std::pair<char, _TokenT> _M_token_tbl[9] =
      {
	{'^', _S_token_line_begin},
	{'$', _S_token_line_end},
	{'.', _S_token_anychar},
	{'*', _S_token_closure0},
	{'+', _S_token_closure1},
	{'?', _S_token_opt},
	{'|', _S_token_or},
	{'\n', _S_token_or}, // grep and egrep
	{'\0', _S_token_or},
      };
    const std::pair<char, char> _M_ecma_escape_tbl[8] =
      {
	{'0', '\0'},
	{'b', '\b'},
	{'f', '\f'},
	{'n', '\n'},
	{'r', '\r'},
	{'t', '\t'},
	{'v', '\v'},
	{'\0', '\0'},
      };
    const std::pair<char, char> _M_awk_escape_tbl[11] =
      {
	{'"', '"'},
	{'/', '/'},
	{'\\', '\\'},
	{'a', '\a'},
	{'b', '\b'},
	{'f', '\f'},
	{'n', '\n'},
	{'r', '\r'},
	{'t', '\t'},
	{'v', '\v'},
	{'\0', '\0'},
      };
    const char* _M_ecma_spec_char = "^$\\.*+?()[]{}|";
    const char* _M_basic_spec_char = ".[\\*^$";
    const char* _M_extended_spec_char = ".[\\()*+?{|^$";

_StateT                       _M_state;
    _FlagT                        _M_flags;
    _TokenT                       _M_token;
    const std::pair<char, char>*  _M_escape_tbl;
    const char*                   _M_spec_char;
    bool                          _M_at_bracket_start;
  };

/**
   * @brief Scans an input range for regex tokens.
   *
   * The %_Scanner class interprets the regular expression pattern in
   * the input range passed to its constructor as a sequence of parse
   * tokens passed to the regular expression compiler.  The sequence
   * of tokens provided depends on the flag settings passed to the
   * constructor: different regular expression grammars will interpret
   * the same input pattern in syntactically different ways.
   */
  template<typename _CharT>
    class _Scanner
    : public _ScannerBase
    {
    public:
      typedef std::basic_string<_CharT>                           _StringT;
      typedef regex_constants::syntax_option_type                 _FlagT;
      typedef const std::ctype<_CharT>                            _CtypeT;

_Scanner(const _CharT* __begin, const _CharT* __end,
	       _FlagT __flags, std::locale __loc);

void
      _M_advance();

_TokenT
      _M_get_token() const noexcept
      { return _M_token; }

const _StringT&
      _M_get_value() const noexcept
      { return _M_value; }

#ifdef _GLIBCXX_DEBUG
      std::ostream&
      _M_print(std::ostream&);
#endif

private:
      void
      _M_scan_normal();

void
      _M_scan_in_bracket();

void
      _M_scan_in_brace();

void
      _M_eat_escape_ecma();

void
      _M_eat_escape_posix();

void
      _M_eat_escape_awk();

void
      _M_eat_class(char);

const _CharT*                 _M_current;
      const _CharT*                 _M_end;
      _CtypeT&                      _M_ctype;
      _StringT                      _M_value;
      void (_Scanner::* _M_eat_escape)();
    };

///@} regex-detail
} // namespace __detail
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#include <bits/regex_scanner.tcc>

${this.title}

Code Editor : regex_scanner.h