add new exceptions

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## v1.1.0 - 2019-08-24
+
+- Added CircularDependencyException
+- Added DependencyInjectionException
+- Added InvalidStateException
+
 ## v1.0.0 - 2017-05-13
 
 - Added NotFoundException

src/CircularDependencyException.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types = 1);
+
+/**
+ * An exception thrown if a circular dependency has been encountered that would result in an
+ * infinite loop or some other state that cannot be handled properly.
+ *
+ * @license See LICENSE file in project root
+ */
+
+namespace Cspray\Labrador\Exception;
+
+class CircularDependencyException extends Exception {
+}

src/DependencyInjectionException.php

@@ -0,0 +1,12 @@
+<?php declare(strict_types=1);
+
+namespace Cspray\Labrador\Exception;
+
+/**
+ *
+ * @package Cspray\Labrador\Exception
+ * @license See LICENSE in source root
+ */
+class DependencyInjectionException extends Exception {
+
+}

src/InvalidStateException.php

@@ -0,0 +1,12 @@
+<?php declare(strict_types=1);
+
+/**
+ * An exception thrown when a Labrador\Engine is asked to do something that it cannot do because of the state the Engine
+ * is in.
+ *
+ * @license See LICENSE in source root.
+ */
+namespace Cspray\Labrador\Exception;
+
+class InvalidStateException extends Exception {
+}