src/pre-pic/pic.h

   1 /*@
   2  * Copyright (c) 2014 - 2017 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
   3  *
   4  * Copyright (C) 1989 - 1992, 2000, 2001, 2003, 2005
   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 _PIC_H
  23 #define _PIC_H
  24
  25 #include "config.h"
  26 #include "pic-config.h"
  27
  28 #include <errno.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31
  32 #include "assert.h"
  33 #include "cset.h"
  34 #include "errarg.h"
  35 #include "error.h"
  36 #include "file_case.h"
  37 #include "lib.h"
  38 #include "output.h"
  39 #include "position.h"
  40 #include "stringclass.h"
  41 #include "text.h"
  42
  43 #ifndef M_SQRT2 // FIXME lib.h
  44 #define M_SQRT2 1.41421356237309504880
  45 #endif
  46
  47 #ifndef M_PI // FIXME lib.h
  48 #define M_PI 3.14159265358979323846
  49 #endif
  50
  51 class input
  52 {
  53   input *next;
  54
  55 public:
  56   input();
  57   virtual ~input();
  58   virtual int get() = 0;
  59   virtual int peek() = 0;
  60   virtual int get_location(const char **, int *);
  61   friend class input_stack;
  62   friend class copy_rest_thru_input;
  63 };
  64
  65 class file_input
  66 : public input
  67 {
  68   file_case *_fcp;
  69   const char *filename;
  70   int lineno;
  71   string line;
  72   const char *ptr;
  73   int read_line();
  74
  75 public:
  76   file_input(file_case *, const char *);
  77   ~file_input();
  78   int get();
  79   int peek();
  80   int get_location(const char **, int *);
  81 };
  82
  83 void lex_init(input *);
  84 int get_location(char **, int *);
  85
  86 void do_copy(const char *file);
  87 void parse_init();
  88 void parse_cleanup();
  89
  90 void lex_error(const char *message,
  91                const errarg &arg1 = empty_errarg,
  92                const errarg &arg2 = empty_errarg,
  93                const errarg &arg3 = empty_errarg);
  94
  95 void lex_warning(const char *message,
  96                  const errarg &arg1 = empty_errarg,
  97                  const errarg &arg2 = empty_errarg,
  98                  const errarg &arg3 = empty_errarg);
  99
 100 void lex_cleanup();
 101
 102 extern int flyback_flag;
 103 extern int command_char;
 104 // zero_length_line_flag is non-zero if zero-length lines are drawn
 105 // as dots by the output device
 106 extern int zero_length_line_flag;
 107 extern int driver_extension_flag;
 108 extern int compatible_flag;
 109 extern int safer_flag;
 110 extern char *graphname;
 111
 112 #endif // _PIC_H
 113 // s-it2-mode