1 files changed, 96 insertions, 0 deletions
diff --git a/lib/phptal/PHPTAL/Php/TalesChainExecutor.php b/lib/phptal/PHPTAL/Php/TalesChainExecutor.php
new file mode 100644
index 0000000..da94724
--- /dev/null
+++ b/lib/phptal/PHPTAL/Php/TalesChainExecutor.php
@@ -0,0 +1,96 @@
+<?php
+/**
+ * PHPTAL templating engine
+ *
+ * PHP Version 5
+ *
+ * @category HTML
+ * @package  PHPTAL
+ * @author   Laurent Bedubourg <lbedubourg@motion-twin.com>
+ * @author   Kornel Lesiński <kornel@aardvarkmedia.co.uk>
+ * @license  http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License
+ * @version  SVN: $Id$
+ * @link     http://phptal.org/
+ */
+
+
+/**
+ * @package PHPTAL
+ * @subpackage Php
+ */
+class PHPTAL_Php_TalesChainExecutor
+{
+    const CHAIN_BREAK = 1;
+    const CHAIN_CONT  = 2;
+
+    public function __construct(PHPTAL_Php_CodeWriter $codewriter, array $chain, PHPTAL_Php_TalesChainReader $reader)
+    {
+        $this->_chain = $chain;
+        $this->_chainStarted = false;
+        $this->codewriter = $codewriter;
+        $this->_reader = $reader;
+        $this->_executeChain();
+    }
+
+    public function getCodeWriter()
+    {
+        return $this->codewriter;
+    }
+
+    public function doIf($condition)
+    {
+        if ($this->_chainStarted == false) {
+            $this->_chainStarted = true;
+            $this->codewriter->doIf($condition);
+        } else {
+            $this->codewriter->doElseIf($condition);
+        }
+    }
+
+    public function doElse()
+    {
+        $this->codewriter->doElse();
+    }
+
+    public function breakChain()
+    {
+        $this->_state = self::CHAIN_BREAK;
+    }
+
+    public function continueChain()
+    {
+        $this->_state = self::CHAIN_CONT;
+    }
+
+    private function _executeChain()
+    {
+        $this->codewriter->noThrow(true);
+
+        end($this->_chain); $lastkey = key($this->_chain);
+
+        foreach ($this->_chain as $key => $exp) {
+            $this->_state = 0;
+
+            if ($exp == PHPTAL_Php_TalesInternal::NOTHING_KEYWORD) {
+                $this->_reader->talesChainNothingKeyword($this);
+            } elseif ($exp == PHPTAL_Php_TalesInternal::DEFAULT_KEYWORD) {
+                $this->_reader->talesChainDefaultKeyword($this);
+            } else {
+                $this->_reader->talesChainPart($this, $exp, $lastkey === $key);
+            }
+
+            if ($this->_state == self::CHAIN_BREAK)
+                break;
+            if ($this->_state == self::CHAIN_CONT)
+                continue;
+        }
+
+        $this->codewriter->doEnd('if');
+        $this->codewriter->noThrow(false);
+    }
+
+    private $_state = 0;
+    private $_chain;
+    private $_chainStarted = false;
+    private $codewriter = null;
+}