WIP

vendor/salesforce/handlebars-php/src/Handlebars/Parser.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * Handlebars parser (based on mustache)
+ *
+ * This class is responsible for turning raw template source into a set of
+ * Handlebars tokens.
+ *
+ * @category  Xamin
+ * @package   Handlebars
+ * @author    fzerorubigd <fzerorubigd@gmail.com>
+ * @author    Behrooz Shabani <everplays@gmail.com>
+ * @author    Mardix <https://github.com/mardix>
+ * @copyright 2012 (c) ParsPooyesh Co
+ * @copyright 2013 (c) Behrooz Shabani
+ * @copyright 2013 (c) Mardix
+ * @license   MIT
+ * @link      http://voodoophp.org/docs/handlebars
+ */
+
+namespace Handlebars;
+use ArrayIterator;
+use LogicException;
+
+class Parser
+{
+    /**
+     * Process array of tokens and convert them into parse tree
+     *
+     * @param array $tokens Set of
+     *
+     * @return array Token parse tree
+     */
+    public function parse(Array $tokens = [])
+    {
+        return $this->buildTree(new ArrayIterator($tokens));
+    }
+
+    /**
+     * Helper method for recursively building a parse tree.
+     *
+     * @param \ArrayIterator $tokens Stream of tokens
+     *
+     * @throws \LogicException when nesting errors or mismatched section tags
+     * are encountered.
+     * @return array Token parse tree
+     *
+     */
+    private function buildTree(ArrayIterator $tokens)
+    {
+        $stack = [];
+
+        do {
+            $token = $tokens->current();
+            $tokens->next();
+
+            if ($token === null) {
+                continue;
+            } else {
+                switch ($token[Tokenizer::TYPE]) {
+                case Tokenizer::T_END_SECTION:
+                    $newNodes = [];
+                    do {
+                        $result = array_pop($stack);
+                        if ($result === null) {
+                            throw new LogicException(
+                                'Unexpected closing tag: /' . $token[Tokenizer::NAME]
+                            );
+                        }
+
+                        if (!array_key_exists(Tokenizer::NODES, $result)
+                            && isset($result[Tokenizer::NAME])
+                            && $result[Tokenizer::NAME] == $token[Tokenizer::NAME]
+                        ) {
+                            $result[Tokenizer::NODES] = $newNodes;
+                            $result[Tokenizer::END] = $token[Tokenizer::INDEX];
+                            array_push($stack, $result);
+                            break 2;
+                        } else {
+                            array_unshift($newNodes, $result);
+                        }
+                    } while (true);
+                    break;
+                default:
+                    array_push($stack, $token);
+                }
+            }
+
+        } while ($tokens->valid());
+
+        return $stack;
+
+    }
+
+}