1 files changed, 174 insertions, 0 deletions
diff --git a/src/main/java/org/unitConverter/unit/UnitlikeValue.java b/src/main/java/org/unitConverter/unit/UnitlikeValue.java
new file mode 100644
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--- /dev/null
+++ b/src/main/java/org/unitConverter/unit/UnitlikeValue.java
@@ -0,0 +1,174 @@
+/**
+ * Copyright (C) 2020 Adrien Hopkins
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package org.unitConverter.unit;
+
+import java.util.Optional;
+
+/**
+ *
+ * @since 2020-09-07
+ */
+final class UnitlikeValue<T extends Unitlike<V>, V> {
+	/**
+	 * Gets a {@code UnitlikeValue<V>}.
+	 *
+	 * @since 2020-10-02
+	 */
+	public static <T extends Unitlike<V>, V> UnitlikeValue<T, V> of(T unitlike,
+			V value) {
+		return new UnitlikeValue<>(unitlike, value);
+	}
+	
+	private final T unitlike;
+	private final V value;
+	
+	/**
+	 * @param unitlike
+	 * @param value
+	 * @since 2020-09-07
+	 */
+	private UnitlikeValue(T unitlike, V value) {
+		this.unitlike = unitlike;
+		this.value = value;
+	}
+	
+	/**
+	 * @return true if this value can be converted to {@code other}.
+	 * @since 2020-10-01
+	 */
+	public final boolean canConvertTo(Unit other) {
+		return this.unitlike.canConvertTo(other);
+	}
+	
+	/**
+	 * @return true if this value can be converted to {@code other}.
+	 * @since 2020-10-01
+	 */
+	public final <W> boolean canConvertTo(Unitlike<W> other) {
+		return this.unitlike.canConvertTo(other);
+	}
+	
+	/**
+	 * Returns a UnitlikeValue that represents the same value expressed in a
+	 * different unitlike form.
+	 * 
+	 * @param other new unit to express value in
+	 * @return value expressed in {@code other}
+	 */
+	public final <U extends Unitlike<W>, W> UnitlikeValue<U, W> convertTo(
+			U other) {
+		return UnitlikeValue.of(other,
+				this.unitlike.convertTo(other, this.getValue()));
+	}
+	
+	/**
+	 * Returns a UnitValue that represents the same value expressed in a
+	 * different unit
+	 * 
+	 * @param other new unit to express value in
+	 * @return value expressed in {@code other}
+	 */
+	public final UnitValue convertTo(Unit other) {
+		return UnitValue.of(other,
+				this.unitlike.convertTo(other, this.getValue()));
+	}
+	
+	/**
+	 * Returns this unit value represented as a {@code LinearUnitValue} with this
+	 * unit's base unit as the base.
+	 *
+	 * @param ns name and symbol for the base unit, use NameSymbol.EMPTY if not
+	 *           needed.
+	 * @since 2020-09-29
+	 */
+	public final LinearUnitValue convertToBase(NameSymbol ns) {
+		final LinearUnit base = LinearUnit.getBase(this.unitlike).withName(ns);
+		return this.convertToLinear(base);
+	}
+	
+	/**
+	 * @return a {@code LinearUnitValue} that is equivalent to this value. It
+	 *         will have zero uncertainty.
+	 * @since 2020-09-29
+	 */
+	public final LinearUnitValue convertToLinear(LinearUnit other) {
+		return LinearUnitValue.getExact(other,
+				this.getUnitlike().convertTo(other, this.getValue()));
+	}
+	
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (!(obj instanceof UnitlikeValue))
+			return false;
+		final UnitlikeValue<?, ?> other = (UnitlikeValue<?, ?>) obj;
+		if (this.getUnitlike() == null) {
+			if (other.getUnitlike() != null)
+				return false;
+		} else if (!this.getUnitlike().equals(other.getUnitlike()))
+			return false;
+		if (this.getValue() == null) {
+			if (other.getValue() != null)
+				return false;
+		} else if (!this.getValue().equals(other.getValue()))
+			return false;
+		return true;
+	}
+	
+	/**
+	 * @return the unitlike
+	 * @since 2020-09-29
+	 */
+	public final Unitlike<V> getUnitlike() {
+		return this.unitlike;
+	}
+	
+	/**
+	 * @return the value
+	 * @since 2020-09-29
+	 */
+	public final V getValue() {
+		return this.value;
+	}
+	
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result
+				+ (this.getUnitlike() == null ? 0 : this.getUnitlike().hashCode());
+		result = prime * result
+				+ (this.getValue() == null ? 0 : this.getValue().hashCode());
+		return result;
+	}
+	
+	@Override
+	public String toString() {
+		final Optional<String> primaryName = this.getUnitlike().getPrimaryName();
+		final Optional<String> symbol = this.getUnitlike().getSymbol();
+		if (primaryName.isEmpty() && symbol.isEmpty()) {
+			final double baseValue = this.getUnitlike()
+					.convertToBase(this.getValue());
+			return String.format("%s unnamed unit (= %s %s)", this.getValue(),
+					baseValue, this.getUnitlike().getBase());
+		} else {
+			final String unitName = symbol.orElse(primaryName.get());
+			return this.getValue() + " " + unitName;
+		}
+	}
+}