Support method references via [$objectOrClass, $methodName]

Author: thekid

src/main/php/com/amazon/aws/lambda/RuntimeApi.class.php

@@ -1,6 +1,6 @@
 <?php namespace com\amazon\aws\lambda;
 
-use ReflectionFunction, Throwable as Any;
+use ReflectionFunction, ReflectionMethod, Throwable as Any;
 use io\Channel;
 use io\streams\InputStream;
 use lang\{Throwable, IllegalStateException, IllegalArgumentException};
@@ -146,6 +146,9 @@ public final function invokeable($target) {
       return new Invokeable([$target, 'process'], $this->buffered());
     } else if ($target instanceof Streaming) {
       return new Invokeable([$target, 'handle'], $this->streaming());
+    } else if (is_array($target)) {
+      $n= (new ReflectionMethod($target[0], $target[1]))->getNumberOfParameters();
+      return new Invokeable($target, $n < 3 ? $this->buffered() : $this->streaming());
     } else if (is_callable($target)) {
       $n= (new ReflectionFunction($target))->getNumberOfParameters();
       return new Invokeable($target, $n < 3 ? $this->buffered() : $this->streaming());

src/test/php/com/amazon/aws/lambda/unittest/BufferedTest.class.php

@@ -21,6 +21,11 @@ private function invoke($lambda) {
     ;
   }
 
+  /** Lambda implementation */
+  public function lambda($event, $context) {
+    return ['test' => true];
+  }
+
   /**
    * Lambda implementations for `response` test.
    *
@@ -35,6 +40,7 @@ public function process($event, $context) {
         return ['test' => true];
       }
     }];
+    yield [[$this, 'lambda']];
   }
 
   #[Test]

src/test/php/com/amazon/aws/lambda/unittest/StreamingTest.class.php

@@ -22,6 +22,13 @@ private function invoke($lambda) {
     ;
   }
 
+  /** Lambda implementation */
+  public function lambda($event, $stream, $context) {
+    $stream->use('text/event-stream');
+    $stream->write("data: One\n\n");
+    $stream->write("data: Two\n\n");
+  }
+
   /**
    * Lambda implementations for `write_event_stream` test.
    *
@@ -40,6 +47,7 @@ public function handle($event, $stream, $context) {
         $stream->write("data: Two\n\n");
       }
     }];
+    yield [[$this, 'lambda']];
   }
 
   #[Test]