Line data    Source code

       1             : /* Copyright (C) 1989-2025 Free Software Foundation, Inc.
       2             :      Written by James Clark (jjc@jclark.com)
       3             : 
       4             : This file is part of groff, the GNU roff typesetting system.
       5             : 
       6             : groff is free software; you can redistribute it and/or modify it under
       7             : the terms of the GNU General Public License as published by the Free
       8             : Software Foundation, either version 3 of the License, or
       9             : (at your option) any later version.
      10             : 
      11             : groff is distributed in the hope that it will be useful, but WITHOUT ANY
      12             : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13             : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14             : for more details.
      15             : 
      16             : You should have received a copy of the GNU General Public License
      17             : along with this program.  If not, see <http://www.gnu.org/licenses/>. */
      18             : 
      19             : #include <stddef.h> // size_t
      20             : #include <stdint.h> // uintptr_t
      21             : 
      22             : #define DONT_STORE 1
      23             : #define MUST_ALREADY_EXIST 2
      24             : 
      25             : class symbol {
      26             :   static const char **table;
      27             :   static int table_used;
      28             :   static int table_size;
      29             :   static char *block;
      30             :   static size_t block_size;
      31             :   const char *s;
      32             : public:
      33             :   symbol(const char *p, int /* how */ = 0);
      34             :   symbol();
      35             :   uintptr_t hash() const;
      36             :   int operator ==(symbol) const;
      37             :   int operator !=(symbol) const;
      38             :   const char *contents() const;
      39             :   bool is_null() const;
      40             :   bool is_empty() const;
      41             :   size_t json_length() const;
      42             :   const char *json_extract() const;
      43             :   void json_dump() const;
      44             : };
      45             : 
      46             : 
      47             : extern const symbol NULL_SYMBOL;
      48             : extern const symbol EMPTY_SYMBOL;
      49             : 
      50    22640395 : inline symbol::symbol() : s(0 /* nullptr */)
      51             : {
      52    22640395 : }
      53             : 
      54    72929713 : inline int symbol::operator==(symbol p) const
      55             : {
      56    72929713 :   return s == p.s;
      57             : }
      58             : 
      59    28239860 : inline int symbol::operator!=(symbol p) const
      60             : {
      61    28239860 :   return s != p.s;
      62             : }
      63             : 
      64    47653627 : inline uintptr_t symbol::hash() const
      65             : {
      66    47653627 :   return reinterpret_cast<uintptr_t>(s);
      67             : }
      68             : 
      69    33200448 : inline const char *symbol::contents() const
      70             : {
      71    33200448 :   return s;
      72             : }
      73             : 
      74    49720747 : inline bool symbol::is_null() const
      75             : {
      76    49720747 :   return (0 /* nullptr */ == s);
      77             : }
      78             : 
      79    17207398 : inline bool symbol::is_empty() const
      80             : {
      81    17207398 :   return ((s != 0 /*  nullptr */) && (0 /* nullptr */ == *s));
      82             : }
      83             : 
      84             : symbol concat(symbol, symbol);
      85             : 
      86             : extern symbol default_symbol;
      87             : 
      88             : // Local Variables:
      89             : // fill-column: 72
      90             : // mode: C++
      91             : // End:
      92             : // vim: set cindent noexpandtab shiftwidth=2 textwidth=72: