3 files changed, 80 insertions, 65 deletions

diff --git a/src/Component.php b/src/Component.php
index 3aa5506..7291ca5 100644
--- a/src/Component.php
+++ b/src/Component.php
@@ -10,64 +10,84 @@
  *
  * @package SqlParser
  */
-namespace SqlParser;
 
-/**
- * A component (of a statement) is a part of a statement that is common to
- * multiple query types.
- *
- * @category Components
- * @package  SqlParser
- * @author   Dan Ungureanu <udan1107@gmail.com>
- * @license  http://opensource.org/licenses/GPL-2.0 GNU Public License
- */
-abstract class Component
-{
+namespace {
 
-    /**
-     * Parses the tokens contained in the given list in the context of the given
-     * parser.
-     *
-     * @param Parser     $parser  The parser that serves as context.
-     * @param TokensList $list    The list of tokens that are being parsed.
-     * @param array      $options Parameters for parsing.
-     *
-     * @return mixed
-     */
-    public static function parse(
-        Parser $parser, TokensList $list, array $options = array()
-    ) {
-        // This method should be abstract, but it can't be both static and
-        // abstract.
-        throw new \Exception('Not implemented yet.');
-    }
+    if (!function_exists('__')) {
 
-    /**
-     * Builds the string representation of a component of this type.
-     *
-     * In other words, this function represents the inverse function of
-     * `static::parse`.
-     *
-     * @param mixed $component The component to be built.
-     *
-     * @return string
-     */
-    public static function build($component)
-    {
-        // This method should be abstract, but it can't be both static and
-        // abstract.
-        throw new \Exception('Not implemented yet.');
+        /**
+         * Translates the given string.
+         *
+         * @param string $str String to be translated.
+         *
+         * @return string
+         */
+        function __($str)
+        {
+            return $str;
+        }
     }
+}
+
+namespace SqlParser {
 
     /**
-     * Builds the string representation of a component of this type.
-     *
-     * @see static::build
+     * A component (of a statement) is a part of a statement that is common to
+     * multiple query types.
      *
-     * @return string
+     * @category Components
+     * @package  SqlParser
+     * @author   Dan Ungureanu <udan1107@gmail.com>
+     * @license  http://opensource.org/licenses/GPL-2.0 GNU Public License
      */
-    public function __toString()
+    abstract class Component
     {
-        return static::build($this);
+
+        /**
+         * Parses the tokens contained in the given list in the context of the given
+         * parser.
+         *
+         * @param Parser     $parser  The parser that serves as context.
+         * @param TokensList $list    The list of tokens that are being parsed.
+         * @param array      $options Parameters for parsing.
+         *
+         * @return mixed
+         */
+        public static function parse(
+            Parser $parser, TokensList $list, array $options = array()
+        ) {
+            // This method should be abstract, but it can't be both static and
+            // abstract.
+            throw new \Exception(\__('Not implemented yet.'));
+        }
+
+        /**
+         * Builds the string representation of a component of this type.
+         *
+         * In other words, this function represents the inverse function of
+         * `static::parse`.
+         *
+         * @param mixed $component The component to be built.
+         *
+         * @return string
+         */
+        public static function build($component)
+        {
+            // This method should be abstract, but it can't be both static and
+            // abstract.
+            throw new \Exception(\__('Not implemented yet.'));
+        }
+
+        /**
+         * Builds the string representation of a component of this type.
+         *
+         * @see static::build
+         *
+         * @return string
+         */
+        public function __toString()
+        {
+            return static::build($this);
+        }
     }
 }
diff --git a/tests/Components/FragmentTest.php b/tests/Components/ComponentTest.php
index f8b27fa..b2388a3 100644
--- a/tests/Components/FragmentTest.php
+++ b/tests/Components/ComponentTest.php
@@ -14,6 +14,8 @@ class ComponentTest extends TestCase
     /**
      * @expectedException \Exception
      * @expectedExceptionMessage Not implemented yet.
+     * @runInSeparateProcess
+     * @preserveGlobalState disabled
      */
     public function testParse()
     {
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 98ffcc6..ebf1ee7 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -1,25 +1,18 @@
 <?php
 
-namespace SqlParser\Tests;
+/**
+ * Bootstrap for tests.
+ *
+ * @package    SqlParser
+ * @subpackage Tests
+ */
 
-require_once 'vendor/autoload.php';
+namespace SqlParser\Tests;
 
 use SqlParser\Lexer;
 use SqlParser\Parser;
 
-/**
- * Dummy function used to test if errors are translated.
- *
- * It only translates "TO_TRANSLATE" to "***".
- *
- * @param string $msg The message to be translated.
- *
- * @return string
- */
-function __($msg)
-{
-    return str_replace('TO_TRANSLATE', '***', $msg);
-}
+require_once 'vendor/autoload.php';
 
 /**
  * Implements useful methods for testing.