compilers/linux86-0.16.17/unproto/token.h

   1 /* @(#) token.h 1.4 92/01/15 21:53:17 */
   2
   3 struct token {
   4     int     tokno;                      /* token value, see below */
   5     char   *path;                       /* file name */
   6     int     line;                       /* line number at token start */
   7     int     end_line;                   /* line number at token end */
   8     struct vstring *vstr;               /* token contents */
   9     struct token *next;
  10     struct token *head;
  11     struct token *tail;
  12 };
  13
  14 /* Special token values */
  15
  16 #define TOK_LIST        256             /* () delimited list */
  17 #define TOK_WORD        257             /* keyword or identifier */
  18 #define TOK_NUMBER      258             /* one or more digits */
  19 #define TOK_WSPACE      259             /* comment, white space, not newline */
  20 #define TOK_OTHER       260             /* other token */
  21 #define TOK_CONTROL     261             /* flow control keyword */
  22 #define TOK_COMPOSITE   262             /* struct or union keyword */
  23 #define TOK_DATE        263             /* date: Mmm dd yyyy */
  24 #define TOK_TIME        264             /* time: hh:mm:ss */
  25 #define TOK_VOID        265             /* void keyword */
  26
  27 /* Input/output functions and macros */
  28
  29 extern struct token *tok_get();         /* read next single token */
  30 extern void tok_show();                 /* display (composite) token */
  31 extern struct token *tok_class();       /* classify tokens */
  32 extern void tok_unget();                /* stuff token back into input */
  33 extern void put_nl();                   /* print newline character */
  34 extern void tok_show_ch();              /* emit single-character token */
  35
  36 #define tok_flush(t)    (tok_show(t), tok_free(t))
  37
  38 #ifdef DEBUG
  39 #define put_ch(c)       (putchar(last_ch = c),fflush(stdout))
  40 #define put_str(s)      (fputs(s,stdout),last_ch = 0,fflush(stdout))
  41 #else
  42 #define put_ch(c)       putchar(last_ch = c)
  43 #define put_str(s)      (fputs(s,stdout),last_ch = 0)
  44 #endif
  45
  46 /* Memory management */
  47
  48 struct token *tok_alloc();              /* allocate token storage */
  49 extern void tok_free();                 /* re-cycle storage */
  50
  51 /* Context */
  52
  53 extern char *in_path;                   /* current input path name */
  54 extern int in_line;                     /* current input line number */
  55 extern int last_ch;                     /* type of last output */