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/* global.h: The global variables for bc. */
/* This file is part of GNU bc.
Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
This program 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 2 of the License , or
(at your option) any later version.
This program 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; see the file COPYING. If not, write to
The Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA 02111 USA
You may contact the author by:
e-mail: philnelson@acm.org
us-mail: Philip A. Nelson
Computer Science Department, 9062
Western Washington University
Bellingham, WA 98226-9062
*************************************************************************/
/* The current break level's lable. */
EXTERN int break_label;
/* The current if statement's else label or label after else. */
EXTERN int if_label;
/* The current for statement label for continuing the loop. */
EXTERN int continue_label;
/* Next available label number. */
EXTERN int next_label;
/* Byte code character storage. Used in many places for generation of code. */
EXTERN char genstr[80];
/* Count of characters printed to the output in compile_only mode. */
EXTERN int out_count;
/* Have we generated any code since the last initialization of the code
generator. */
EXTERN char did_gen;
/* Is this run an interactive execution. (Is stdin a terminal?) */
EXTERN char interactive;
/* Just generate the byte code. -c flag. */
EXTERN int compile_only;
/* Load the standard math functions. -l flag. */
EXTERN int use_math;
/* Give a warning on use of any non-standard feature (non-POSIX). -w flag. */
EXTERN int warn_not_std;
/* Accept POSIX bc only! -s flag. */
EXTERN int std_only;
/* Don't print the banner at start up. -q flag. */
EXTERN int quiet;
/* The list of file names to process. */
EXTERN file_node *file_names;
/* The name of the current file being processed. */
EXTERN char *file_name;
/* Is the current file a named file or standard input? */
EXTERN char is_std_in;
/* global variables for the bc machine. All will be dynamic in size.*/
/* Function storage. main is (0) and functions (1-f_count) */
EXTERN bc_function *functions;
EXTERN char **f_names;
EXTERN int f_count;
/* Variable stoarge and reverse names. */
EXTERN bc_var **variables;
EXTERN char **v_names;
EXTERN int v_count;
/* Array Variable storage and reverse names. */
EXTERN bc_var_array **arrays;
EXTERN char **a_names;
EXTERN int a_count;
/* Execution stack. */
EXTERN estack_rec *ex_stack;
/* Function return stack. */
EXTERN fstack_rec *fn_stack;
/* Current ibase, obase, scale, and n_history (if needed). */
EXTERN int i_base;
EXTERN int o_base;
EXTERN int scale;
#if defined(READLINE) || defined(LIBEDIT)
EXTERN int n_history;
#endif
#if defined(LIBEDIT)
/* LIBEDIT data */
EditLine *edit;
History *hist;
HistEvent histev;
#endif
/* "Condition code" -- false (0) or true (1) */
EXTERN char c_code;
/* Records the number of the runtime error. */
EXTERN char runtime_error;
/* Holds the current location of execution. */
EXTERN program_counter pc;
/* For POSIX bc, this is just for number output, not strings. */
EXTERN int out_col;
/* Keeps track of the current number of characters per output line.
This includes the \n at the end of the line. */
EXTERN int line_size;
/* Input Line numbers and other error information. */
EXTERN int line_no;
EXTERN int had_error;
/* For larger identifiers, a tree, and how many "storage" locations
have been allocated. */
EXTERN int next_array;
EXTERN int next_func;
EXTERN int next_var;
EXTERN id_rec *name_tree;
/* For use with getopt. Do not declare them here.*/
extern int optind;
/* Access to the yy input file. Defined in scan.c. */
extern FILE *yyin;
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