--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Behat\Context\ContextClass;
+
+use Behat\Behat\Context\Environment\Handler\ContextEnvironmentHandler;
+
+/**
+ * Resolves arbitrary context strings into a context classes.
+ *
+ * @see ContextEnvironmentHandler
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+interface ClassResolver
+{
+ /**
+ * Checks if resolvers supports provided class.
+ *
+ * @param string $contextString
+ *
+ * @return Boolean
+ */
+ public function supportsClass($contextString);
+
+ /**
+ * Resolves context class.
+ *
+ * @param string $contextClass
+ *
+ * @return string
+ */
+ public function resolveClass($contextClass);
+}