Encoder: added support for entity chaining [Closes #21]

Author: sallyx

src/Neon/Encoder.php

@@ -28,6 +28,9 @@ public function encode($var, $options = NULL)
 			return $var->format('Y-m-d H:i:s O');
 
 		} elseif ($var instanceof Entity) {
+			if ($var->value === Neon::CHAIN) {
+				return implode('', array_map(array($this, 'encode'), $var->attributes));
+			}
 			return $this->encode($var->value) . '('
 				. (is_array($var->attributes) ? substr($this->encode($var->attributes), 1, -1) : '') . ')';
 		}

tests/Neon/Encoder.phpt

@@ -82,3 +82,12 @@ Assert::same(
 	"foo: 1\nbar:\n\tx:\n\t\t- 1\n\t\t- 2\n\n\ty:\n\t\t- 3\n\t\t- 4\n\nbaz: null\n",
 	Neon::encode(array('foo' => 1, 'bar' => array('x' => array(1, 2), 'y' => array(3, 4)), 'baz' => NULL), Neon::BLOCK)
 );
+
+Assert::same(
+	'ent(1)inner(2, 3)',
+	Neon::encode(Neon::decode('ent(1)inner(2, 3)'))
+);
+Assert::same(
+	'foo(1, 2)::bar(3)',
+	Neon::encode(Neon::decode('foo(1,2)::bar(3)'))
+);