TokenFactory和Tokenizer基础

src/Token/Factory/FactoryInterface.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * @filename FactoryInterface.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/1/22 13:42
+ */
+
+
+namespace JerryYan\DSL\Token\Factory;
+
+
+
+use JerryYan\DSL\Token\TokenInterface;
+use JerryYan\DSL\Token\TokenUndefined;
+
+abstract class FactoryInterface
+{
+    /** @var array<string, \JerryYan\DSL\Token\TokenInterface> Token类型及映射类 */
+    protected $tokenMap = [];
+    /** @var array<string, string> Token别名映射 */
+    protected $tokenNameMap = [];
+    /** @var \JerryYan\DSL\Token\TokenInterface 默认Token类 */
+    protected $undefinedTokenClass = TokenUndefined::class;
+
+    public function getTokenByName(string $name): TokenInterface
+    {
+        $originalName = $name;
+        if (isset($this->tokenNameMap[$name])) {
+            $name = $this->tokenNameMap[$name];
+        }
+        if (!isset($this->tokenMap[$name])) {
+            return new $this->undefinedTokenClass($originalName);
+        } else {
+            return new $this->tokenMap[$name]($originalName);
+        }
+    }
+
+}