public String unparse()
// throws BugException
{
return "("
+ left.unparse()
+ ")"
+ SyntaxTree.token2String(token)
+ "("
+ right.unparse()
+ ")";
}
public EC evaluate(EC ec) throws BugException, PartialException {
EC ec1 = left.evaluate(ec);
EC ec2 = right.evaluate(ec);
EC ec3 = EC.ZERO;
switch (token) {
case -1:
throw new BugException("SyntaxTreeBinary.evaluate(NOTOKEN)");
case 0: // '\0'
ec3 = ec1.add(ec2);
break;
case 1: // '\001'
ec3 = ec1.subtract(ec2);
break;
case 2: // '\002'
ec3 = ec1.multiply(ec2);
break;
case 3: // '\003'
ec3 = ec1.divide(ec2);
break;
case 4: // '\004'
ec3 = ec1.power(ec2);
break;
case 5: // '\005'
case 6: // '\006'
case 7: // '\007'
case 8: // '\b'
case 9: // '\t'
case 10: // '\n'
case 11: // '\013'
case 12: // '\f'
case 13: // '\r'
case 14: // '\016'
case 15: // '\017'
case 16: // '\020'
case 17: // '\021'
case 18: // '\022'
throw new BugException(
"SyntaxTreeBinary.evaluate with unary token " + SyntaxTree.token2String(token));
}
return ec3;
}