/**
* @param c
* @param vars
* @return
* @throws DMLRuntimeException
*/
private static LiteralOp replaceLiteralValueTypeCastLiteral(Hop c, LocalVariableMap vars)
throws DMLRuntimeException {
LiteralOp ret = null;
// as.double/as.integer/as.boolean over scalar literal (potentially created by other replacement
// rewrite in same dag) - literal replacement
if (c instanceof UnaryOp
&& (((UnaryOp) c).getOp() == OpOp1.CAST_AS_DOUBLE
|| ((UnaryOp) c).getOp() == OpOp1.CAST_AS_INT
|| ((UnaryOp) c).getOp() == OpOp1.CAST_AS_BOOLEAN)
&& c.getInput().get(0) instanceof LiteralOp) {
LiteralOp sdat = (LiteralOp) c.getInput().get(0);
UnaryOp cast = (UnaryOp) c;
try {
switch (cast.getOp()) {
case CAST_AS_INT:
long ival = HopRewriteUtils.getIntValue(sdat);
ret = new LiteralOp(ival);
break;
case CAST_AS_DOUBLE:
double dval = HopRewriteUtils.getDoubleValue(sdat);
ret = new LiteralOp(dval);
break;
case CAST_AS_BOOLEAN:
boolean bval = HopRewriteUtils.getBooleanValue(sdat);
ret = new LiteralOp(bval);
break;
default:
// otherwise: do nothing
}
} catch (HopsException ex) {
throw new DMLRuntimeException(ex);
}
}
return ret;
}
