Moved general purpose stuff into util, renamed utils->util

src/mightypork/util/objects/VarargsParser.java

@@ -0,0 +1,54 @@
+package mightypork.util.objects;
+
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+
+/**
+ * Varargs parser<br>
+ * Converts an array of repeated "key, value" pairs to a LinkedHashMap.<br>
+ * example:
+ * 
+ * <pre>
+ * Object[] array = { &quot;one&quot;, 1, &quot;two&quot;, 4, &quot;three&quot;, 9, &quot;four&quot;, 16 };
+ * Map&lt;String, Integer&gt; args = new VarargsParser&lt;String, Integer&gt;().parse(array);
+ * </pre>
+ * 
+ * @author MightyPork
+ * @param <K> Type for Map keys
+ * @param <V> Type for Map values
+ */
+public class VarargsParser<K, V> {
+	
+	/**
+	 * Parse array of vararg key, value pairs to a LinkedHashMap.
+	 * 
+	 * @param args varargs
+	 * @return LinkedHashMap
+	 * @throws ClassCastException in case of incompatible type in the array
+	 * @throws IllegalArgumentException in case of invalid array length (odd)
+	 */
+	@SuppressWarnings("unchecked")
+	public Map<K, V> parse(Object... args) throws ClassCastException, IllegalArgumentException
+	{
+		final LinkedHashMap<K, V> attrs = new LinkedHashMap<>();
+		
+		if (args.length % 2 != 0) {
+			throw new IllegalArgumentException("Odd number of elements in varargs map!");
+		}
+		
+		K key = null;
+		for (final Object o : args) {
+			if (key == null) {
+				if (o == null) throw new RuntimeException("Key cannot be NULL in varargs map.");
+				key = (K) o;
+			} else {
+				attrs.put(key, (V) o);
+				key = null;
+			}
+		}
+		
+		return attrs;
+	}
+}