1 files changed, 74 insertions, 0 deletions
diff --git a/src/roff/troff/reg.h b/src/roff/troff/reg.h
new file mode 100644
index 0000000..132bcf1
--- /dev/null
+++ b/src/roff/troff/reg.h
@@ -0,0 +1,74 @@
+// -*- C++ -*-
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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 of the License, or
+(at your option) any later version.
+
+groff 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.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+
+class reg : public object {
+public:
+  virtual const char *get_string() = 0;
+  virtual bool get_value(units *);
+  virtual void increment();
+  virtual void decrement();
+  virtual void set_increment(units);
+  virtual void alter_format(char f, int w = 0);
+  virtual const char *get_format();
+  virtual void set_value(units);
+};
+
+class readonly_register : public reg {
+  int *p;
+public:
+  readonly_register(int *);
+  const char *get_string();
+};
+
+class general_reg : public reg {
+  char format;
+  int width;
+  int inc;
+public:
+  general_reg();
+  const char *get_string();
+  void increment();
+  void decrement();
+  void alter_format(char f, int w = 0);
+  void set_increment(units);
+  const char *get_format();
+  void add_value(units);
+
+  void set_value(units) = 0;
+  bool get_value(units *) = 0;
+};
+
+class variable_reg : public general_reg {
+  units *ptr;
+public:
+  variable_reg(int *);
+  void set_value(units);
+  bool get_value(units *);
+};
+
+extern object_dictionary register_dictionary;
+extern void set_number_reg(symbol nm, units n);
+extern void check_output_limits(int x, int y);
+extern void reset_output_registers();
+
+reg *lookup_number_reg(symbol);
+#if 0
+void inline_define_reg();
+#endif