src/roff/troff/request.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4      Written by James Clark (jjc@jclark.com)
   5
   6 This file is part of groff.
   7
   8 groff 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 groff 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
  21
  22 typedef void (*REQUEST_FUNCP)();
  23
  24 class macro;
  25
  26 class request_or_macro : public object {
  27 public:
  28   request_or_macro();
  29   virtual void invoke(symbol s) = 0;
  30   virtual macro *to_macro();
  31 };
  32
  33 class request : public request_or_macro {
  34   REQUEST_FUNCP p;
  35 public:
  36   void invoke(symbol);
  37   request(REQUEST_FUNCP);
  38 };
  39
  40 void delete_request_or_macro(request_or_macro *);
  41
  42 extern object_dictionary request_dictionary;
  43
  44 struct macro_header;
  45 struct node;
  46
  47 class macro : public request_or_macro {
  48   macro_header *p;
  49   const char *filename;         // where was it defined?
  50   int lineno;
  51   int len;
  52   int empty_macro;
  53 public:
  54   macro();
  55   ~macro();
  56   macro(const macro &);
  57   macro &operator=(const macro &);
  58   void append(unsigned char);
  59   void append(node *);
  60   void append_unsigned(unsigned int i);
  61   void append_int(int i);
  62   void append_str(const char *);
  63   void set(unsigned char, int);
  64   unsigned char get(int);
  65   int length();
  66   void invoke(symbol);
  67   macro *to_macro();
  68   void print_size();
  69   int empty();
  70   friend class string_iterator;
  71   friend void chop_macro();
  72   friend void substring_request();
  73   friend int operator==(const macro &, const macro &);
  74 };
  75
  76 extern void init_input_requests();
  77 extern void init_markup_requests();
  78 extern void init_div_requests();
  79 extern void init_node_requests();
  80 extern void init_reg_requests();
  81 extern void init_env_requests();
  82 extern void init_hyphen_requests();
  83 extern void init_request(const char *s, REQUEST_FUNCP f);
  84
  85 class charinfo;
  86 class environment;
  87
  88 node *charinfo_to_node_list(charinfo *, const environment *);