From 8b97e99bb75043382389a232ffee4b261d34f6b7 Mon Sep 17 00:00:00 2001
From: Jerry Yan <792602257@qq.com>
Date: Wed, 17 Mar 2021 12:09:59 +0800
Subject: [PATCH] =?UTF-8?q?Stmt=E5=88=9B=E5=BB=BA?=
MIME-Version: 1.0
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---
 src/AST/Statement/StatementInterface.php | 40 ++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 src/AST/Statement/StatementInterface.php

diff --git a/src/AST/Statement/StatementInterface.php b/src/AST/Statement/StatementInterface.php
new file mode 100644
index 0000000..76a83bd
--- /dev/null
+++ b/src/AST/Statement/StatementInterface.php
@@ -0,0 +1,40 @@
+<?php
+/**
+ * @filename StatementInterface.php
+ * @author Jerry Yan <792602257@qq.com>
+ * @date 2021/2/22 13:56
+ */
+
+
+namespace JerryYan\DSL\AST\Statement;
+
+
+abstract class StatementInterface
+{
+    /** @var ?StatementInterface */
+    protected $parent;
+    /** @var ?StatementInterface */
+    protected $child;
+
+    /**
+     * @param StatementInterface|null $parent
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2021/3/16 9:49
+     */
+    public function setParent(?StatementInterface $parent): void
+    {
+        $this->parent = $parent;
+    }
+
+    /**
+     * @param StatementInterface|null $child
+     * @author Jerry Yan <792602257@qq.com>
+     * @date 2021/3/16 9:50
+     */
+    public function setChild(?StatementInterface $child): void
+    {
+        $this->child = $child;
+    }
+
+    abstract public function validate(): bool;
+}