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93 lines
2.1 KiB
C
93 lines
2.1 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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/* List a node on a file */
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#include "pgenheaders.h"
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#include "token.h"
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#include "node.h"
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/* Forward */
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static void list1node PROTO((FILE *, node *));
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void
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listtree(n)
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node *n;
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{
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listnode(stdout, n);
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}
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static int level, atbol;
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void
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listnode(fp, n)
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FILE *fp;
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node *n;
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{
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level = 0;
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atbol = 1;
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list1node(fp, n);
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}
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static void
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list1node(fp, n)
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FILE *fp;
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node *n;
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{
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if (n == 0)
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return;
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if (ISNONTERMINAL(TYPE(n))) {
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int i;
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for (i = 0; i < NCH(n); i++)
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list1node(fp, CHILD(n, i));
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}
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else if (ISTERMINAL(TYPE(n))) {
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switch (TYPE(n)) {
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case INDENT:
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++level;
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break;
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case DEDENT:
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--level;
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break;
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default:
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if (atbol) {
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int i;
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for (i = 0; i < level; ++i)
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fprintf(fp, "\t");
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atbol = 0;
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}
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if (TYPE(n) == NEWLINE) {
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if (STR(n) != NULL)
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fprintf(fp, "%s", STR(n));
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fprintf(fp, "\n");
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atbol = 1;
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}
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else
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fprintf(fp, "%s ", STR(n));
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break;
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}
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}
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else
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fprintf(fp, "? ");
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}
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