src/troff/request.h

   1 /*@
   2  * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   3  *
   4  * Copyright (C) 1989 - 1992, 2000 - 2002, 2004, 2008
   5  *    Free Software Foundation, Inc.
   6  *      Written by James Clark (jjc@jclark.com)
   7  *
   8  * This is free software; you can redistribute it and/or modify it under
   9  * the terms of the GNU General Public License as published by the Free
  10  * Software Foundation; either version 2, or (at your option) any later
  11  * version.
  12  *
  13  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  14  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with groff; see the file COPYING.  If not, write to the Free Software
  20  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  21  */
  22 #ifndef _REQUEST_H
  23 #define _REQUEST_H
  24
  25 #include "config.h"
  26 #include "troff-config.h"
  27
  28 typedef void (*REQUEST_FUNCP)();
  29
  30 class macro;
  31
  32 class request_or_macro
  33 : public object
  34 {
  35 public:
  36   request_or_macro();
  37   virtual void invoke(symbol, int) = 0;
  38   virtual macro *to_macro();
  39 };
  40
  41 class request
  42 : public request_or_macro
  43 {
  44   REQUEST_FUNCP p;
  45
  46 public:
  47   void invoke(symbol, int);
  48   request(REQUEST_FUNCP);
  49 };
  50
  51 void delete_request_or_macro(request_or_macro *);
  52
  53 extern object_dictionary request_dictionary;
  54
  55 class macro_header;
  56 struct node;
  57
  58 class macro
  59 : public request_or_macro
  60 {
  61   friend class string_iterator;
  62   friend void chop_macro();
  63   friend void substring_request();
  64   friend int operator==(const macro &, const macro &);
  65
  66   const char *filename;         // where was it defined?
  67   int lineno;
  68   int len;
  69   int empty_macro;
  70   int is_a_diversion;
  71   int is_a_string;              // if it contains no newline
  72
  73 public:
  74   macro_header *p;
  75
  76   macro();
  77   ~macro();
  78   macro(const macro &);
  79   macro(int);
  80   macro &operator=(const macro &);
  81   void append(unsigned char);
  82   void append(node *);
  83   void append_unsigned(unsigned int);
  84   void append_int(int);
  85   void append_str(const char *);
  86   void set(unsigned char, int);
  87   unsigned char get(int);
  88   int length();
  89   void invoke(symbol, int);
  90   macro *to_macro();
  91   void print_size();
  92   int empty();
  93   int is_diversion();
  94   int is_string();
  95   void clear_string_flag();
  96 };
  97
  98 extern void init_input_requests();
  99 extern void init_markup_requests();
 100 extern void init_div_requests();
 101 extern void init_node_requests();
 102 extern void init_reg_requests();
 103 extern void init_env_requests();
 104 extern void init_hyphen_requests();
 105 extern void init_request(const char *, REQUEST_FUNCP);
 106
 107 class charinfo;
 108 class environment;
 109
 110 node *charinfo_to_node_list(charinfo *, const environment *);
 111
 112 #endif // _REQUEST_H
 113 // s-it2-mode