From 0748f983c77d6e133959891823ee1c338d3deee9 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: Tue, 9 Mar 2021 11:12:23 +0800
Subject: improve didChange

---
 script/files.lua             | 16 ++++++++++++++--
 script/provider/provider.lua |  1 +
 test/basic/init.lua          |  1 +
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/script/files.lua b/script/files.lua
index 745c5354..c322bbe8 100644
--- a/script/files.lua
+++ b/script/files.lua
@@ -193,6 +193,19 @@ function m.setText(uri, text, isTrust)
     end
 end
 
+function m.setRawText(uri, text)
+    if not text then
+        return
+    end
+    uri = getUriKey(uri)
+    local file = m.fileMap[uri]
+    file.text             = text
+    file.originText       = text
+    m.linesMap[uri]       = nil
+    m.originLinesMap[uri] = nil
+    m.astMap[uri]         = nil
+end
+
 --- 获取文件版本
 function m.getVersion(uri)
     uri = getUriKey(uri)
@@ -539,9 +552,8 @@ function m.offset(uri, position, isFinish)
     local row    = position.line + 1
     local start  = guide.lineRange(lines, row)
     local offset
-    -- TODO
     if start <= 0 or start > #text then
-        offset = math.maxinteger
+        offset = #text + 1
     else
         offset = utf8.offset(text, position.character + 1, start) or #text
     end
diff --git a/script/provider/provider.lua b/script/provider/provider.lua
index 10b5fc8b..bf9dd9a0 100644
--- a/script/provider/provider.lua
+++ b/script/provider/provider.lua
@@ -279,6 +279,7 @@ proto.on('textDocument/didChange', function (params)
         else
             text = change.text
         end
+        files.setRawText(uri, text)
     end
     files.setText(uri, text, true)
 end)
diff --git a/test/basic/init.lua b/test/basic/init.lua
index 3c6d591f..f809a2f3 100644
--- a/test/basic/init.lua
+++ b/test/basic/init.lua
@@ -104,6 +104,7 @@ for _, change in ipairs(changes) do
     else
         text = change.text
     end
+    files.setRawText('', text)
 end
 
 assert(text == [[
-- 
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