added Helpers::isNamespace

Author: dg

src/PhpGenerator/Helpers.php

@@ -243,6 +243,15 @@ public static function isIdentifier($value)
 	}
 
 
+	/**
+	 * @return bool
+	 */
+	public static function isNamespace($value)
+	{
+		return is_string($value) && preg_match('#^' . Helpers::PHP_IDENT . '(\\\\' . Helpers::PHP_IDENT . ')*\z#', $value);
+	}
+
+
 	/**
 	 * @param  string
 	 * @return object

tests/PhpGenerator/Helpers.isNamespace.phpt

@@ -0,0 +1,17 @@
+<?php
+
+use Nette\PhpGenerator\Helpers;
+use Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+
+Assert::true(Helpers::isNamespace('Item'));
+Assert::true(Helpers::isNamespace("\x7F"));
+Assert::true(Helpers::isNamespace("\x7F\\\x7F"));
+Assert::false(Helpers::isNamespace('0Item'));
+Assert::true(Helpers::isNamespace('Item\Item'));
+Assert::false(Helpers::isNamespace('Item\\\\Item'));
+Assert::false(Helpers::isNamespace('\\Item'));
+Assert::false(Helpers::isNamespace('Item\\'));