79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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* Author: Ceriel J.H. Jacobs
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*/
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/* S Y N T A X E R R O R R E P O R T I N G */
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/* $Id$ */
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/* Defines the LLmessage routine. LLgen-generated parsers require the
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existence of a routine of that name.
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The routine must do syntax-error reporting and must be able to
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insert tokens in the token stream.
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*/
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#include <alloc.h>
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#include <em_arith.h>
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#include <em_label.h>
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#include "idf.h"
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#include "LLlex.h"
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#include "Lpars.h"
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extern char *symbol2str();
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extern t_idf *gen_anon_idf();
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LLmessage(tk)
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register int tk;
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{
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if (tk > 0) {
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/* if (tk > 0), it represents the token to be inserted.
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*/
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register t_token *dotp = ˙
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#ifndef LLNONCORR
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error("%s missing before %s", symbol2str(tk), symbol2str(dotp->tk_symb));
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#endif
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aside = *dotp;
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dotp->tk_symb = tk;
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switch (tk) {
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/* The operands need some body */
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case IDENT:
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dotp->TOK_IDF = gen_anon_idf();
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break;
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case STRING:
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dotp->tk_data.tk_str = (struct string *)
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Malloc(sizeof (struct string));
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dotp->TOK_SLE = 1;
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dotp->TOK_STR = Salloc("", 1);
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break;
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case INTEGER:
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dotp->TOK_INT = 1;
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break;
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case REAL:
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dotp->tk_data.tk_real = new_real();
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dotp->TOK_RSTR = Salloc("0.0", 4);
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flt_str2flt(dotp->TOK_RSTR, &dotp->TOK_RVAL);
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break;
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}
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}
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else if (tk < 0) {
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error("end of file expected");
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}
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else {
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#ifndef LLNONCORR
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error("%s deleted", symbol2str(dot.tk_symb));
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#else
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error("%s not expected", symbol2str(dot.tk_symb));
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#endif
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}
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tk_nmb_at_last_syn_err = token_nmb;
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}
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