acf

plugins/system/nrframework/NRFramework/Parser/Tokens.php

@@ -0,0 +1,96 @@
+<?php
+
+/**
+ *  @author          Tassos.gr <info@tassos.gr>
+ *  @link            https://www.tassos.gr
+ *  @copyright       Copyright © 2024 Tassos All Rights Reserved
+ *  @license         GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
+*/
+
+namespace NRFramework\Parser;
+
+defined('_JEXEC') or die;
+
+/**
+ *  Tokens
+ *  Holds token types and manages creation of new tokens
+ */
+class Tokens
+{
+    /**
+     *  Token types array
+     *
+     *  @var array
+     */
+    protected $types = [];
+
+    public function __construct()
+    {
+        // default types
+        $this->addType('invalid_token');
+        $this->addType('EOF');
+    }
+
+    /**
+     *  Adds a new token type
+     *
+     *  @param string $type
+     *  @return $this
+     */
+    public function addType($type)
+    {
+        if (!$this->hasType($type))
+        {
+            $this->types[] = $type;
+        }
+
+        return $this;
+    }
+
+    /**
+     *  Gets a token type id (i.e. it's array index)
+     *
+     *  @param string $type
+     *  @return int|null
+     */
+    public function getTypeId($type)
+    {
+        $id = array_search($type, $this->types);
+        $id = $id !== false ? $id : null;
+        return $id;
+    }
+
+    /**
+     *  Returns the token types array
+     *
+     *  @return array
+     */
+    public function getTypes()
+    {
+        return clone $this->types;
+    }
+
+    /**
+     *  Creates a new token
+     *
+     *  @param  string  $type
+     *  @param  string  $text
+     *  @param  integer $position, Position of token in the input stream
+     *  @return Token
+     */
+    public function create($type, $text, $position)
+    {
+        return new Token($type, $text, $position);
+    }
+    
+    /**
+     *  Checks if a type is registered
+     *
+     *  @param string $type
+     *  @return boolean
+     */
+    public function hasType($type)
+    {
+        return (bool)array_search($type, $this->types);
+    }
+}