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/*======================================================================
PCADSWR(c)
Partial CAD signature write.
\Input
\parm{c} is a cell whose subtree (with signature) will be written out to
the output stream.
======================================================================*/
#include "qepcad.h"
void PCADSWR(Word c)
{
Word cb,cp,p,s,S;
/* hide p; */
Step1: /* common. */
LWRITE(LELTI(c,INDX));
if (LELTI(c,LEVEL) > 0)
{
s = LELTI(c,SAMPLE);
if (ISPRIMIT(s)) CWRITE('p'); else CWRITE('e');
if (s == NIL) CWRITE('?'); else
GWRITE(CELLDEG(c));
S = FIRST(LELTI(c,SIGNPF));
if (S != 0)
SIGNLWR(S);
}
cb = LELTI(c,CHILD);
Step2: /* c is a leaf. */
if (cb == NIL)
{
SWRITE(" ");
TRUTHWR(LELTI(c,TRUTH));
SWRITE("\n");
goto Return;
}
Step3: /* c is not a leaf. */
p = OPOS;
ADV(cb,&cp,&cb);
SWRITE("---");
PCADSWR(cp);
while (cb != NIL)
{
TAB(p);
ADV(cb,&cp,&cb);
SWRITE("---");
PCADSWR(cp);
}
Return: /* Prepare for return. */
return;
}
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