fix #1529

Author: sumneko

changelog.md

@@ -1,5 +1,8 @@
 # changelog
 
+## 3.5.5
+
+
 ## 3.5.4
 `2022-9-6`
 * `NEW` `type-formatting`: fix wrong indentation of VSCode

script/parser/compile.lua

@@ -3826,6 +3826,7 @@ local function initState(lua, version, options)
         comms   = {},
         lines   = {
             [0] = 1,
+            size = #lua,
         },
         options = options or {},
     }

script/parser/guide.lua

@@ -812,12 +812,24 @@ end
 ---@param col integer
 ---@return integer
 function m.positionOf(row, col)
-    return row * 10000 + col
+    return row * 10000 + math.min(col, 10000 - 1)
 end
 
 function m.positionToOffsetByLines(lines, position)
     local row, col = m.rowColOf(position)
-    return (lines[row] or 1) + col - 1
+    if row < 0 then
+        return 0
+    end
+    if row > #lines then
+        return lines.size
+    end
+    local offset = lines[row] + col - 1
+    if lines[row + 1] and offset >= lines[row + 1] then
+        return lines[row + 1] - 1
+    elseif offset > lines.size then
+        return lines.size
+    end
+    return offset
 end
 
 --- 返回全文光标位置

script/parser/lines.lua

@@ -6,6 +6,7 @@ return function (text)
     local current = 1
     local lines = {}
     lines[0] = 1
+    lines.size = #text
     local i = 0
     while true do
         local pos = sfind(text,'[\r\n]', current)