1 files changed, 80 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/Parameters.php b/www/wiki/extensions/SemanticMediaWiki/src/Parameters.php
new file mode 100644
index 00000000..5088d29d
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/Parameters.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace SMW;
+
+use InvalidArgumentException;
+
+/**
+ * @license GNU GPL v2+
+ * @since 3.0
+ *
+ * @author mwjames
+ */
+class Parameters {
+
+	/**
+	 * @var array
+	 */
+	private $parameters = [];
+
+	/**
+	 * @since 3.0
+	 */
+	public function __construct( array $parameters = [] ) {
+		$this->parameters = $parameters;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param string $key
+	 * @param mixed $value
+	 */
+	public function set( $key, $value ) {
+		$this->parameters[$key] = $value;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param string $key
+	 * @param array $value
+	 */
+	public function merge( $key, array $value ) {
+
+		if ( !isset( $this->parameters[$key] ) ) {
+			$this->parameters[$key] = [];
+		}
+
+		$this->parameters[$key] += $value;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param string $key
+	 *
+	 * @return boolean
+	 */
+	public function has( $key ) {
+		return isset( $this->parameters[$key] ) || array_key_exists( $key, $this->parameters );
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param string $key
+	 *
+	 * @return string
+	 * @throws InvalidArgumentException
+	 */
+	public function get( $key ) {
+
+		if ( $this->has( $key ) ) {
+			return $this->parameters[$key];
+		}
+
+		throw new InvalidArgumentException( "$key is an unregistered key." );
+	}
+
+}