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/*
        CPP V5 -- global header for variables.

        Source:  glb.h
        Started: June 20, 1986
        Version: May 21, 1988; August 1, 1989

        Written by Edward K. Ream.
        This software is in the public domain.

        See the read.me file for disclaimer and other information.
*/

/*
        Constants describing limits.
*/
#define MAX_SYMBOL      1000    /* Max len of symbols/strings.          */
#define MAX_FILE_NAME   50      /* Maximum length of file names.        */
#define MAX_IF          50      /* Max nesting level of #if's.          */
#define MAX_PATHS       20      /* Max number of -s args.               */
#define MAX_RTEXT       1000    /* Max chars in replacement string.     */
#define MAX_ATEXT       1000    /* Max total chars in actual args.      */
#define MAX_NARGS       50      /* Max number of macro arguments.       */
#define MAX_MDEPTH      100     /* Max depth of macro expansions.       */
#define MAX_INCLUDE     MAX_MDEPTH+20

/*
        Exclude the rest if glb.c is the file including this file.
*/
#ifndef no_extern

/*
        ============= global variables =============
*/

/*
        The next character of input.
*/
extern char     ch;             /* The NEXT character.                  */


/*
        User Flags.
*/
extern bool     nest_flag;      /* TRUE = allow nested comments.        */
extern bool     com_flag;       /* TRUE = leave comments in output.     */
extern bool     slc_flag;       /* TRUE = allow single-line comments.   */

/*
        Globals for macro expansion.
        p_rescan and m_flag are used by sysnext().
*/
extern bool     m_flag;                 /* TRUE if expanding a macro.   */
extern char     macro_buf[MAX_RTEXT];   /* Final macro buffer.          */
extern char *   p_rescan;               /* Pointer into rescan_buf[].   */


/*
        Globals describing tokens.

        The code assumes that no token or string will ever be longer than
        MAX_SYMBOL.  If that ever is not so the program may crash.  Thus,
        MAX_SYMBOL should be very large -- say 1000 or more.
*/
extern en_tokens token;                 /* The current token. */
extern int      t_subtype;              /* The subtype of token class.          */
extern char     t_symbol [MAX_SYMBOL];  /* The spelling of the token.           */
extern int      t_length;               /* The length of the token (in the text)*/
extern long     t_value;                /* Value of integer constants.          */

/*
        The following globals are set ONLY by the system module and
        used by the preprocessor.
*/
extern char *   t_file;                 /* Name of current input file.  */
extern int      t_line;                 /* Line number within file.     */
extern int      t_inlevel;              /* Current input file level.    */

/*
        Globals for use internally to the token routines.
*/
extern bool     t_ifstack [MAX_IF];     /* Stack for nexted #if's       */
extern int      t_iflevel;              /* Nexting depth of #if's       */
extern long     t_errcount;             /* Number of errors seen.       */

/*
        Defines for the path table.
        This table is used to search for #include files.
*/
extern char *   paths [MAX_PATHS];      /* Pointers to path names.      */
extern int      n_paths;                /* Number of paths defined.     */

#endif /* no_extern */