add object transforms

src/Transforms/index.php

@@ -0,0 +1,10 @@
+<?php
+/**
+ * Copyright 2018 Kacper Donat
+ *
+ * @author Kacper "Kadet" Donat <kacper@kadet.net>
+ *
+ * Full license available in separate LICENSE file
+ */
+
+

src/Transforms/objects.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Copyright 2018 Kacper Donat
+ *
+ * @author Kacper "Kadet" Donat <kacper@kadet.net>
+ *
+ * Full license available in separate LICENSE file
+ */
+
+namespace Kadet\Functional\Transforms;
+
+function getter($property)
+{
+    return method('get'.ucfirst($property));
+}
+
+function property($property)
+{
+    return function ($object) use ($property) {
+        if (method_exists($object, $getter = 'get'.ucfirst($property))) {
+            return $object->{$getter}();
+        }
+
+        return $object->{$property};
+    };
+}
+
+function field($field)
+{
+    return function ($object) use ($field) {
+        return $object->{$field};
+    };
+}
+
+function method($method, ...$args)
+{
+    return function ($object) use ($method, $args) {
+        return $object->{$method}(...$args);
+    };
+}

src/functions.php

@@ -2,7 +2,6 @@
 
 namespace Kadet\Functional;
 
-use function foo\func;
 use Kadet\Functional\Predicate\AllOfPredicate;
 use Kadet\Functional\Predicate\AnyOfPredicate;
 use Kadet\Functional\Predicate\ClosurePredicate;
@@ -14,6 +13,7 @@ use Kadet\Functional\Utils\FixedFunction;
 use Kadet\Functional\Utils\PartiallyAppliedFunction;
 
 require_once __DIR__.'/Utils/index.php';
+require_once __DIR__.'/Transforms/index.php';
 
 /**
  * @param $predicate