first commit

java/expression/SetBit.java

@@ -0,0 +1,46 @@
+package expression;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+/**
+ * @author Doschennikov Nikita (me@fymio.us)
+ */
+public class SetBit extends AbstractBinaryOperation {
+
+    public SetBit(AbstractExpression l, AbstractExpression r) {
+        super(l, r);
+    }
+
+    @Override
+    protected String getOperator() {
+        return "set";
+    }
+
+    @Override
+    protected int getPriority() {
+        return 0;
+    }
+
+    @Override
+    protected boolean isRightAssoc() {
+        return true;
+    }
+
+    @Override
+    protected int applyInt(int a, int b) {
+        return a | (1 << b);
+    }
+
+    @Override
+    protected BigInteger applyBi(BigInteger a, BigInteger b) {
+        return a.setBit(b.intValueExact());
+    }
+
+    @Override
+    protected BigDecimal applyBd(BigDecimal a, BigDecimal b) {
+        throw new UnsupportedOperationException(
+            "set not supported for BigDecimal"
+        );
+    }
+}