expres
r1 = expres(0, Argi);
r1 = conj(op1, r1, expres(pri[op1-OR], 0));
r1 = rel(op1, r1, expres(pri[op1-OR], 0));
r1 = arith(op1, r1, expres(pri[op1-OR], 0));
r1 = match(r1, expres(pri[op1-OR], 0));
rb = expres(pri[op1-OR], 0);
ra = expres(pri[op1-OR], 0);
rc = expres(pri[op1-OR], 0);
rb = expres(pri[op1-OR], 0);
ra = expres(pri[op1-OR], 0);
ra = expres(pri[op1-OR], 0);
rb = expres(pri[op1-OR], 0);
ra = expres(pri[op1-OR], 0);
buf = expres(0, 1);