From f93376241582ff98b5d9bc0434a0190b416e70d5 Mon Sep 17 00:00:00 2001
From: 2betop <2betop.cn@gmail.com>
Date: Thu, 16 Jun 2022 11:53:25 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=95=B0=E6=8D=AE?=
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---
 packages/amis-core/src/utils/isPureVariable.ts | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/packages/amis-core/src/utils/isPureVariable.ts b/packages/amis-core/src/utils/isPureVariable.ts
index e06d2fd45..d5332b46f 100644
--- a/packages/amis-core/src/utils/isPureVariable.ts
+++ b/packages/amis-core/src/utils/isPureVariable.ts
@@ -1,5 +1,15 @@
+import {parse} from 'amis-formula';
+
 export function isPureVariable(path?: any): path is string {
-  return typeof path === 'string'
-    ? /^\$(?:((?:\w+\:)?[a-z0-9_.][a-z0-9_.\[\]]*)|{[^}{]+})$/i.test(path)
-    : false;
+  if (typeof path === 'string') {
+    try {
+      const ast = parse(path);
+      // 只有一个成员说明是纯表达式模式
+      return ast.body.length === 1;
+    } catch (err) {
+      return false;
+    }
+  }
+
+  return false;
 }