From 891ebf5760d7c7ac39cdcfa7042b33e93f4e9ade Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Wed, 16 Dec 2020 17:05:57 +0800
Subject: #306

---
 script/files.lua        | 1 +
 script/parser/guide.lua | 2 +-
 script/vm/getDocs.lua   | 3 +++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/script/files.lua b/script/files.lua
index 71981a83..eb9fe97c 100644
--- a/script/files.lua
+++ b/script/files.lua
@@ -210,6 +210,7 @@ function m.removeAllClosed()
 end
 
 --- 遍历文件
+--- TODO: 协程不安全
 function m.eachFile()
     return pairs(m.fileMap)
 end
diff --git a/script/parser/guide.lua b/script/parser/guide.lua
index ba858eaf..1f1ab48a 100644
--- a/script/parser/guide.lua
+++ b/script/parser/guide.lua
@@ -2263,7 +2263,7 @@ function m.pushResult(status, mode, ref, simple)
             end
         end
         if  m.isLiteral(ref)
-        and ref.parent.type == 'callargs'
+        and ref.parent and ref.parent.type == 'callargs'
         and ref ~= simple.node then
             results[#results+1] = ref
         end
diff --git a/script/vm/getDocs.lua b/script/vm/getDocs.lua
index 1c54d593..632dd1c2 100644
--- a/script/vm/getDocs.lua
+++ b/script/vm/getDocs.lua
@@ -51,6 +51,9 @@ local function getDocTypes(name)
 end
 
 function vm.getDocEnums(doc, mark, results)
+    if not doc then
+        return nil
+    end
     mark = mark or {}
     if mark[doc] then
         return nil
-- 
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