gnu/dist/groff/src/roff/troff/request.h

   1 /*      $NetBSD$        */
   2
   3 // -*- C++ -*-
   4 /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001, 2002, 2004
   5    Free Software Foundation, Inc.
   6      Written by James Clark (jjc@jclark.com)
   7
   8 This file is part of groff.
   9
  10 groff is free software; you can redistribute it and/or modify it under
  11 the terms of the GNU General Public License as published by the Free
  12 Software Foundation; either version 2, or (at your option) any later
  13 version.
  14
  15 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 for more details.
  19
  20 You should have received a copy of the GNU General Public License along
  21 with groff; see the file COPYING.  If not, write to the Free Software
  22 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  23
  24 typedef void (*REQUEST_FUNCP)();
  25
  26 class macro;
  27
  28 class request_or_macro : public object {
  29 public:
  30   request_or_macro();
  31   virtual void invoke(symbol s) = 0;
  32   virtual macro *to_macro();
  33 };
  34
  35 class request : public request_or_macro {
  36   REQUEST_FUNCP p;
  37 public:
  38   void invoke(symbol);
  39   request(REQUEST_FUNCP);
  40 };
  41
  42 void delete_request_or_macro(request_or_macro *);
  43
  44 extern object_dictionary request_dictionary;
  45
  46 class macro_header;
  47 struct node;
  48
  49 class macro : public request_or_macro {
  50   const char *filename;         // where was it defined?
  51   int lineno;
  52   int len;
  53   int empty_macro;
  54   int is_a_diversion;
  55 public:
  56   macro_header *p;
  57   macro();
  58   ~macro();
  59   macro(const macro &);
  60   macro(int);
  61   macro &operator=(const macro &);
  62   void append(unsigned char);
  63   void append(node *);
  64   void append_unsigned(unsigned int i);
  65   void append_int(int i);
  66   void append_str(const char *);
  67   void set(unsigned char, int);
  68   unsigned char get(int);
  69   int length();
  70   void invoke(symbol);
  71   macro *to_macro();
  72   void print_size();
  73   int empty();
  74   int is_diversion();
  75   friend class string_iterator;
  76   friend void chop_macro();
  77   friend void substring_request();
  78   friend int operator==(const macro &, const macro &);
  79 };
  80
  81 extern void init_input_requests();
  82 extern void init_markup_requests();
  83 extern void init_div_requests();
  84 extern void init_node_requests();
  85 extern void init_reg_requests();
  86 extern void init_env_requests();
  87 extern void init_hyphen_requests();
  88 extern void init_request(const char *s, REQUEST_FUNCP f);
  89
  90 class charinfo;
  91 class environment;
  92
  93 node *charinfo_to_node_list(charinfo *, const environment *);