Method: none body represents NULL instead of FALSE (BC break)

Author: dg

src/PhpGenerator/ClassType.php

@@ -493,7 +493,7 @@ public function addMethod($name)
 	{
 		$method = (new Method($name))->setNamespace($this->namespace);
 		if ($this->type === 'interface') {
-			$method->setBody(FALSE);
+			$method->setBody(NULL);
 		} else {
 			$method->setVisibility('public');
 		}

src/PhpGenerator/Factory.php

@@ -65,7 +65,7 @@ public function fromMethodReflection(\ReflectionMethod $from)
 		$method->setVisibility($from->isPrivate() ? 'private' : ($from->isProtected() ? 'protected' : ($isInterface ? NULL : 'public')));
 		$method->setFinal($from->isFinal());
 		$method->setAbstract($from->isAbstract() && !$isInterface);
-		$method->setBody($from->isAbstract() ? FALSE : '');
+		$method->setBody($from->isAbstract() ? NULL : '');
 		$method->setReturnReference($from->returnsReference());
 		$method->setVariadic($from->isVariadic());
 		$method->setComment(Helpers::unformatDocComment((string) $from->getDocComment()));

src/PhpGenerator/Method.php

@@ -15,7 +15,7 @@
 /**
  * Class method.
  *
- * @property string|FALSE $body
+ * @property string|NULL $body
  */
 class Method
 {
@@ -25,6 +25,9 @@ class Method
 	use Traits\VisibilityAware;
 	use Traits\CommentAware;
 
+	/** @var string|NULL */
+	private $body = '';
+
 	/** @var bool */
 	private $static = FALSE;
 
@@ -77,25 +80,29 @@ public function __toString()
 			. $this->name
 			. $this->parametersToString()
 			. $this->returnTypeToString()
-			. ($this->abstract || $this->body === FALSE
+			. ($this->abstract || $this->body === NULL
 				? ';'
 				: "\n{\n" . Nette\Utils\Strings::indent(ltrim(rtrim($this->body) . "\n"), 1) . '}');
 	}
 
 
 	/**
-	 * @param  string|FALSE
+	 * @param  string|NULL
 	 * @return static
 	 */
 	public function setBody($code, array $args = NULL)
 	{
+		if ($code === FALSE) {
+			$code = NULL;
+			trigger_error(__METHOD__ . '() use NULL instead of FALSE', E_USER_DEPRECATED);
+		}
 		$this->body = $args === NULL ? $code : Helpers::formatArgs($code, $args);
 		return $this;
 	}
 
 
 	/**
-	 * @return string|FALSE
+	 * @return string|NULL
 	 */
 	public function getBody()
 	{