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54 lines
2.3 KiB
C
54 lines
2.3 KiB
C
/***********************************************************
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Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
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Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior permission.
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STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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/* Tokenizer interface */
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#include "token.h" /* For token types */
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#define MAXINDENT 100 /* Max indentation level */
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/* Tokenizer state */
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struct tok_state {
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/* Input state; buf <= cur <= inp <= end */
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/* NB an entire token must fit in the buffer */
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char *buf; /* Input buffer */
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char *cur; /* Next character in buffer */
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char *inp; /* End of data in buffer */
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char *end; /* End of input buffer */
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int done; /* 0 normally, 1 at EOF, -1 after error */
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FILE *fp; /* Rest of input; NULL if tokenizing a string */
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int tabsize; /* Tab spacing */
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int indent; /* Current indentation index */
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int indstack[MAXINDENT]; /* Stack of indents */
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int atbol; /* Nonzero if at begin of new line */
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int pendin; /* Pending indents (if > 0) or dedents (if < 0) */
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char *prompt, *nextprompt; /* For interactive prompting */
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int lineno; /* Current line number */
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};
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extern struct tok_state *tok_setups PROTO((char *));
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extern struct tok_state *tok_setupf PROTO((FILE *, char *ps1, char *ps2));
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extern void tok_free PROTO((struct tok_state *));
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extern int tok_get PROTO((struct tok_state *, char **, char **));
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