From ffc383d45e4a4a21958ec88ae8815c4683d3f2f4 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: Sun, 10 Nov 2019 23:29:36 +0800
Subject: =?UTF-8?q?=E5=A4=84=E7=90=86=E4=B8=80=E4=B8=8B=E5=9D=90=E6=A0=87?=
 =?UTF-8?q?=E8=BD=AC=E6=8D=A2?=
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---
 server-beta/src/parser/guide.lua | 6 +++---
 server-beta/src/proto/define.lua | 6 ++++++
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/server-beta/src/parser/guide.lua b/server-beta/src/parser/guide.lua
index b8593865..1cc82143 100644
--- a/server-beta/src/parser/guide.lua
+++ b/server-beta/src/parser/guide.lua
@@ -361,7 +361,7 @@ end
 ---@return integer {name = 'col'}
 function m.positionOf(lines, offset)
     if offset < 1 then
-        return 1, 1
+        return 0, 0
     end
     local lastLine = lines[#lines]
     if offset > lastLine.finish then
@@ -394,7 +394,7 @@ end
 ---@return integer {name = 'offset'}
 function m.offsetOf(lines, row, col)
     if row < 1 then
-        return 1
+        return 0
     end
     if row > #lines then
         local lastLine = lines[#lines]
@@ -422,7 +422,7 @@ end
 function m.lineRange(lines, row)
     local line = lines[row]
     if not line then
-        return 1, 1
+        return 0, 0
     end
     return line.start, line.finish
 end
diff --git a/server-beta/src/proto/define.lua b/server-beta/src/proto/define.lua
index 5e6bd3cf..1bf45531 100644
--- a/server-beta/src/proto/define.lua
+++ b/server-beta/src/proto/define.lua
@@ -23,7 +23,13 @@ end
 function m.position(lines, text, offset)
     local row, col = guide.positionOf(lines, offset)
     local start    = guide.lineRange(lines, row)
+    if start < 1 then
+        start = 1
+    end
     local ucol     = utf8.len(text, start, start + col - 1, true)
+    if row < 1 then
+        row = 1
+    end
     return {
         line      = row - 1,
         character = ucol,
-- 
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