src/preproc/pic/pic.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001, 2003, 2005
   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 #include "lib.h"
  23
  24 #include <math.h>
  25 #include <stdlib.h>
  26 #include <errno.h>
  27
  28 #ifdef NEED_DECLARATION_RAND
  29 #undef rand
  30 extern "C" {
  31   int rand();
  32 }
  33 #endif /* NEED_DECLARATION_RAND */
  34
  35 #ifdef NEED_DECLARATION_SRAND
  36 #undef srand
  37 extern "C" {
  38 #ifdef RET_TYPE_SRAND_IS_VOID
  39   void srand(unsigned int);
  40 #else
  41   int srand(unsigned int);
  42 #endif
  43 }
  44 #endif /* NEED_DECLARATION_SRAND */
  45
  46 #ifndef HAVE_FMOD
  47 extern "C" {
  48   double fmod(double, double);
  49 }
  50 #endif
  51
  52 #include "assert.h"
  53 #include "cset.h"
  54 #include "stringclass.h"
  55 #include "errarg.h"
  56 #include "error.h"
  57 #include "position.h"
  58 #include "text.h"
  59 #include "output.h"
  60
  61 #ifndef M_SQRT2
  62 #define M_SQRT2 1.41421356237309504880
  63 #endif
  64
  65 #ifndef M_PI
  66 #define M_PI 3.14159265358979323846
  67 #endif
  68
  69 class input {
  70   input *next;
  71 public:
  72   input();
  73   virtual ~input();
  74   virtual int get() = 0;
  75   virtual int peek() = 0;
  76   virtual int get_location(const char **, int *);
  77   friend class input_stack;
  78   friend class copy_rest_thru_input;
  79 };
  80
  81 class file_input : public input {
  82   FILE *fp;
  83   const char *filename;
  84   int lineno;
  85   string line;
  86   const char *ptr;
  87   int read_line();
  88 public:
  89   file_input(FILE *, const char *);
  90   ~file_input();
  91   int get();
  92   int peek();
  93   int get_location(const char **, int *);
  94 };
  95
  96 void lex_init(input *);
  97 int get_location(char **, int *);
  98
  99 void do_copy(const char *file);
 100 void parse_init();
 101 void parse_cleanup();
 102
 103 void lex_error(const char *message,
 104                const errarg &arg1 = empty_errarg,
 105                const errarg &arg2 = empty_errarg,
 106                const errarg &arg3 = empty_errarg);
 107
 108 void lex_warning(const char *message,
 109                  const errarg &arg1 = empty_errarg,
 110                  const errarg &arg2 = empty_errarg,
 111                  const errarg &arg3 = empty_errarg);
 112
 113 void lex_cleanup();
 114
 115 extern int flyback_flag;
 116 extern int command_char;
 117 // zero_length_line_flag is non-zero if zero-length lines are drawn
 118 // as dots by the output device
 119 extern int zero_length_line_flag;
 120 extern int driver_extension_flag;
 121 extern int compatible_flag;
 122 extern int safer_flag;
 123 extern char *graphname;