Обьекты в качесте значений

Klein.php

@@ -1,7 +1,13 @@
 <?php
 
 class Klein {
-    private $code;
+    public $code;
+
+    function __construct($html = null) {
+        if ($html) {
+            $this->compile($html);
+        }
+    }
 
     function compile($html) {
         $pattern = array_map(function ($grammar) {
@@ -12,7 +18,11 @@ class Klein {
                     $code = "<?php " . preg_replace_callback("/#(\d+)(s?)/", function ($s) use($x) {
                             $pref = $s[2] == 's' ? '$' : '';
                             return implode(", ", array_map(function ($s) use($pref) {
-                                return $pref.preg_replace("/\.\s*(\w+)/", "['$1']", $s); }, preg_split("/\s*,\s*/", $x[$s[1]])));
+                                $list = preg_split('/\.\s*/', $s);
+                                $first = array_shift($list);
+                                
+                                return count($list) > 0 ? "Klein::get(".$pref.$first.", [".implode(",", array_map(function ($x) { return "'$x'"; }, $list))."])" : $pref.$first; 
+                            }, preg_split("/\s*,\s*/", $x[$s[1]])));
                         }, $result) . " ?>";
                     return ($x[0][2] == '!') ? "<!-- $code -->" : $code;
                 }];
@@ -20,8 +30,8 @@ class Klein {
             ["{% for+:id+in+:var %}", "foreach(#2s as \$index => #1s): \$loop = Klein::loop(\$index, #2s);"],
             ["{% for+:id , :id+in+:var %}", "foreach(#3s as #1s => #2s):"],
             ["{% endfor %}", "endforeach;"],
-            ["{% ifset+:var %}", "if(isset(#1s)):"],
-            ["{% if+:var %}", "if(isset(#1s) && #1s):"],
+            ["{% ifset+:var %}", "if(#1s !== null):"],
+            ["{% if+:var %}", "if(#1s !== null && #1s):"],
             ["{% if+:id \(( :var (, :var )*)?\) %}", "if(macro_#1(#2s)):"],
             ["{% unless+:var %}", "if(!(isset(#1s) && #1s)):"],
             ["{% else %}", "else:"],
@@ -41,6 +51,18 @@ class Klein {
         $this->code = $result;
     }
 
+    static function get($arr, $items) {
+        $result = $arr;
+        foreach ($items as $key) {
+            if (is_array($result)) {
+                $result = $result[$key];
+            } else {
+                $result = $result->{$key};
+            }
+        }
+        return $result;
+    }
+
     static function loop($idx, &$array) {
         $is_even =  $idx % 2;
         return ['first' => $idx == 0
@@ -55,4 +77,4 @@ class Klein {
         eval(" ?>".$this->code."<?php ");
         return ob_get_clean();
     }
-}
+}

examples/example.php

@@ -6,8 +6,7 @@ function title($x) {
     return ucfirst($x);
 }
 
-$tpl = new Klein();
-$tpl->compile('tempalte.html');
+$tpl = new Klein('tempalte.html');
 
 echo $tpl->render(array(
     'pagename' => 'awesome people',

examples/example4.php

@@ -0,0 +1,30 @@
+<?php
+
+require_once '../klein.php';
+
+function title($x) {
+    return ucfirst($x);
+}
+
+$tpl = new Klein('tempalte.html');
+
+$u1 = new stdClass();
+$u1->name = 'Paul';
+$u1->age = 10;
+
+$u2 = new stdClass();
+$u2->name = 'Jim';
+$u2->age = 11;
+
+$u3 = new stdClass();
+$u3->name = 'Jane';
+$u3->age = 12;
+
+echo $tpl->render(array(
+    'pagename' => 'awesome people',
+    'authors' => [$u1, $u2, $u3],
+    'city'=> [
+        'Yaroslaval' => 1,
+        'Moscow' => 2
+    ]
+));