PhpGenerator: PhpLiteral is immutable object (and consistent with SqlLiteral) (BC break)

Author: dg

src/PhpGenerator/Helpers.php

@@ -39,7 +39,7 @@ public static function dump($var)
 	private static function _dump(&$var, $level = 0)
 	{
 		if ($var instanceof PhpLiteral) {
-			return $var->value;
+			return (string) $var;
 
 		} elseif (is_float($var)) {
 			$var = var_export($var, TRUE);

src/PhpGenerator/PhpLiteral.php

@@ -23,12 +23,22 @@
 class PhpLiteral
 {
 	/** @var string */
-	public $value = '';
+	private $value;
 
 
 	public function __construct($value)
 	{
 		$this->value = (string) $value;
 	}
 
+
+
+	/**
+	 * @return string
+	 */
+	public function __toString()
+	{
+		return $this->value;
+	}
+
 }