From 9345faf7d33fd3bbb1f3e74d33ae44d70020831b Mon Sep 17 00:00:00 2001
From: Danila Fedorin <danila.fedorin@gmail.com>
Date: Mon, 24 Jul 2017 11:13:18 -0700
Subject: [PATCH] Add a naive number implementation that uses doubles.

---
 src/org/nwapw/abacus/number/NaiveNumber.java | 39 ++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 src/org/nwapw/abacus/number/NaiveNumber.java

diff --git a/src/org/nwapw/abacus/number/NaiveNumber.java b/src/org/nwapw/abacus/number/NaiveNumber.java
new file mode 100644
index 0000000..0e9cd84
--- /dev/null
+++ b/src/org/nwapw/abacus/number/NaiveNumber.java
@@ -0,0 +1,39 @@
+package org.nwapw.abacus.number;
+
+public class NaiveNumber implements Number {
+
+    private double value;
+
+    public NaiveNumber(double value) {
+        this.value = value;
+    }
+
+    @Override
+    public Number multiply(Number multiplier) {
+        if(!(multiplier instanceof NaiveNumber)) throw new IllegalArgumentException();
+        return new NaiveNumber(value * ((NaiveNumber)multiplier).value);
+    }
+
+    @Override
+    public Number divide(Number divisor) {
+        if(!(divisor instanceof NaiveNumber)) throw new IllegalArgumentException();
+        return new NaiveNumber(value * ((NaiveNumber)divisor).value);
+    }
+
+    @Override
+    public Number add(Number summand) {
+        if(!(summand instanceof NaiveNumber)) throw new IllegalArgumentException();
+        return new NaiveNumber(value * ((NaiveNumber)summand).value);
+    }
+
+    @Override
+    public Number subtract(Number subtrahend) {
+        if(!(subtrahend instanceof NaiveNumber)) throw new IllegalArgumentException();
+        return new NaiveNumber(value * ((NaiveNumber)subtrahend).value);
+    }
+
+    @Override
+    public Number negate() {
+        return new NaiveNumber(-value);
+    }
+}