From 9026b1abdb2ceaff39d275e65712c2bb79f54e2b Mon Sep 17 00:00:00 2001
From: Aidan Woods <aidantwoods@gmail.com>
Date: Sun, 1 Apr 2018 16:55:10 +0100
Subject: [PATCH 1/2] Add recursive helper for AST, use this for implementation
 of calling handler recursively

---
 Parsedown.php | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/Parsedown.php b/Parsedown.php
index 382023c..e0783c9 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1588,26 +1588,39 @@ class Parsedown
 
     protected function handleElementRecursive(array $Element)
     {
-        $Element = $this->handle($Element);
+        return $this->elementApplyRecursive(array($this, 'handle'), $Element);
+    }
+
+    protected function handleElementsRecursive(array $Elements)
+    {
+        return $this->elementsApplyRecursive(array($this, 'handle'), $Elements);
+    }
+
+    protected function elementApplyRecursive($closure, array $Element)
+    {
+        $Element = call_user_func($closure, $Element);
 
         if (isset($Element['elements']))
         {
-            $Element['elements'] = $this->handleElementsRecursive($Element['elements']);
+            $Element['elements'] = $this->elementsApplyRecursive($closure, $Element['elements']);
         }
         elseif (isset($Element['element']))
         {
-            $Element['element'] = $this->handleElementRecursive($Element['element']);
+            $Element['element'] = $this->elementApplyRecursive($closure, $Element['element']);
         }
 
         return $Element;
     }
 
-    protected function handleElementsRecursive(array $Elements)
+    protected function elementsApplyRecursive($closure, array $Elements)
     {
-        return array_map(array($this, 'handleElementRecursive'), $Elements);
+        return array_map(
+            array($this, 'elementApplyRecursive'),
+            array_fill(0, count($Elements), $closure),
+            $Elements
+        );
     }
 
-
     protected function element(array $Element)
     {
         if ($this->safeMode)

From 390fa0da1b2da708ed040455de24fbc085e61a74 Mon Sep 17 00:00:00 2001
From: Aidan Woods <aidantwoods@gmail.com>
Date: Sun, 1 Apr 2018 17:55:32 +0100
Subject: [PATCH 2/2] This is probably faster than duplicating the closure

---
 Parsedown.php | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Parsedown.php b/Parsedown.php
index e0783c9..d0cf8bc 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1614,10 +1614,13 @@ class Parsedown
 
     protected function elementsApplyRecursive($closure, array $Elements)
     {
-        return array_map(
-            array($this, 'elementApplyRecursive'),
-            array_fill(0, count($Elements), $closure),
-            $Elements
+        return array_reduce(
+            $Elements,
+            function (array $Elements, array $Element) use ($closure) {
+                $Elements[] = $this->elementApplyRecursive($closure, $Element);
+                return $Elements;
+            },
+            array()
         );
     }