From bff8f363ce5e2ca84da1d57a470f0648c4b338e6 Mon Sep 17 00:00:00 2001
From: Adrien Hopkins <masterofnumbers17@gmail.com>
Date: Tue, 26 Nov 2019 20:53:27 -0500
Subject: Prefixes can now have names.

---
 src/org/unitConverter/unit/UnitPrefix.java | 85 ++++++++++++++++++++++++++++--
 1 file changed, 82 insertions(+), 3 deletions(-)

(limited to 'src/org/unitConverter/unit/UnitPrefix.java')

diff --git a/src/org/unitConverter/unit/UnitPrefix.java b/src/org/unitConverter/unit/UnitPrefix.java
index 360b0c1..31cc0b3 100644
--- a/src/org/unitConverter/unit/UnitPrefix.java
+++ b/src/org/unitConverter/unit/UnitPrefix.java
@@ -16,6 +16,10 @@
  */
 package org.unitConverter.unit;
 
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+
 import org.unitConverter.math.DecimalComparison;
 
 /**
@@ -34,9 +38,40 @@ public final class UnitPrefix {
 	 * @since 2019-10-16
 	 */
 	public static UnitPrefix valueOf(final double multiplier) {
-		return new UnitPrefix(multiplier);
+		return new UnitPrefix(multiplier, NameSymbol.EMPTY);
+	}
+
+	/**
+	 * Gets a {@code UnitPrefix} from a multiplier and a name
+	 * 
+	 * @param multiplier
+	 *            multiplier of prefix
+	 * @param ns
+	 *            name(s) and symbol of prefix
+	 * @return prefix
+	 * @since 2019-10-16
+	 * @throws NullPointerException
+	 *             if ns is null
+	 */
+	public static UnitPrefix valueOf(final double multiplier, final NameSymbol ns) {
+		return new UnitPrefix(multiplier, Objects.requireNonNull(ns, "ns must not be null."));
 	}
 
+	/**
+	 * This prefix's primary name
+	 */
+	private final Optional<String> primaryName;
+
+	/**
+	 * This prefix's symbol
+	 */
+	private final Optional<String> symbol;
+
+	/**
+	 * Other names and symbols used by this prefix
+	 */
+	private final Set<String> otherNames;
+
 	/**
 	 * The number that this prefix multiplies units by
 	 * 
@@ -51,8 +86,11 @@ public final class UnitPrefix {
 	 * @since 2019-01-14
 	 * @since v0.2.0
 	 */
-	private UnitPrefix(final double multiplier) {
+	private UnitPrefix(final double multiplier, final NameSymbol ns) {
 		this.multiplier = multiplier;
+		this.primaryName = ns.getPrimaryName();
+		this.symbol = ns.getSymbol();
+		this.otherNames = ns.getOtherNames();
 	}
 
 	/**
@@ -105,6 +143,30 @@ public final class UnitPrefix {
 		return this.multiplier;
 	}
 
+	/**
+	 * @return other names
+	 * @since 2019-11-26
+	 */
+	public final Set<String> getOtherNames() {
+		return this.otherNames;
+	}
+
+	/**
+	 * @return primary name
+	 * @since 2019-11-26
+	 */
+	public final Optional<String> getPrimaryName() {
+		return this.primaryName;
+	}
+
+	/**
+	 * @return symbol
+	 * @since 2019-11-26
+	 */
+	public final Optional<String> getSymbol() {
+		return this.symbol;
+	}
+
 	/**
 	 * {@inheritDoc}
 	 * 
@@ -158,6 +220,23 @@ public final class UnitPrefix {
 	 */
 	@Override
 	public String toString() {
-		return String.format("Unit prefix with multiplier %s", this.multiplier);
+		if (this.primaryName.isPresent())
+			return String.format("%s (\u00D7 %s)", this.primaryName.get(), this.multiplier);
+		else if (this.symbol.isPresent())
+			return String.format("%s (\u00D7 %s)", this.symbol.get(), this.multiplier);
+		else
+			return String.format("Unit Prefix (\u00D7 %s)", this.multiplier);
+	}
+
+	/**
+	 * @param ns
+	 *            name(s) and symbol to use
+	 * @return copy of this prefix with provided name(s) and symbol
+	 * @since 2019-11-26
+	 * @throws NullPointerException
+	 *             if ns is null
+	 */
+	public UnitPrefix withName(final NameSymbol ns) {
+		return valueOf(this.multiplier, ns);
 	}
 }
-- 
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