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