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- /* @(#) token.h 1.4 92/01/15 21:53:17 */
-
- struct token {
- int tokno; /* token value, see below */
- char *path; /* file name */
- int line; /* line number at token start */
- int end_line; /* line number at token end */
- struct vstring *vstr; /* token contents */
- struct token *next;
- struct token *head;
- struct token *tail;
- };
-
- /* Special token values */
-
- #define TOK_LIST 256 /* () delimited list */
- #define TOK_WORD 257 /* keyword or identifier */
- #define TOK_NUMBER 258 /* one or more digits */
- #define TOK_WSPACE 259 /* comment, white space, not newline */
- #define TOK_OTHER 260 /* other token */
- #define TOK_CONTROL 261 /* flow control keyword */
- #define TOK_COMPOSITE 262 /* struct or union keyword */
- #define TOK_DATE 263 /* date: Mmm dd yyyy */
- #define TOK_TIME 264 /* time: hh:mm:ss */
- #define TOK_VOID 265 /* void keyword */
-
- /* Input/output functions and macros */
-
- extern struct token *tok_get(); /* read next single token */
- extern void tok_show(); /* display (composite) token */
- extern struct token *tok_class(); /* classify tokens */
- extern void tok_unget(); /* stuff token back into input */
- extern void put_nl(); /* print newline character */
- extern void tok_show_ch(); /* emit single-character token */
-
- #define tok_flush(t) (tok_show(t), tok_free(t))
-
- #ifdef DEBUG
- #define put_ch(c) (putchar(last_ch = c),fflush(stdout))
- #define put_str(s) (fputs(s,stdout),last_ch = 0,fflush(stdout))
- #else
- #define put_ch(c) putchar(last_ch = c)
- #define put_str(s) (fputs(s,stdout),last_ch = 0)
- #endif
-
- /* Memory management */
-
- struct token *tok_alloc(); /* allocate token storage */
- extern void tok_free(); /* re-cycle storage */
-
- /* Context */
-
- extern char *in_path; /* current input path name */
- extern int in_line; /* current input line number */
- extern int last_ch; /* type of last output */
-