Improve intellisense plugin

.vscode/fa-plugin.lua

@@ -1,3 +1,32 @@
+local StringFind = string.find
+local StringGmatch = string.gmatch
+local StringMatch = string.match
+
+local IoOpen = io.open
+
+-- repository to use for hook file intellisense. Same as the one in the dev init file.
+local initPath = 'C:/ProgramData/FAForever/bin/init_local_development.lua'
+
+local initFile, err = IoOpen(initPath, 'r')
+local locationOfRepository
+if initFile then
+    for line in initFile:lines() do
+        local start, finish, repoPath = StringFind(line, 'locationOfRepository = [\'"]([%w:/]+)[\'"]')
+        if repoPath then
+            locationOfRepository = repoPath
+            print('[FA Plugin] Using repository path: ' .. repoPath)
+            break
+        end
+    end
+    if not locationOfRepository then
+        print('[FA Plugin] Could not find repository path in init file:' .. initPath)
+    end
+else
+    print('[FA plugin] Could not open init file: ' .. tostring(initPath)
+        .. '\n[FA plugin] Error message: ' .. tostring(err)
+    )
+end
+
 ---@class diff
 ---@field start  integer # The number of bytes at the beginning of the replacement
 ---@field finish integer # The number of bytes at the end of the replacement
@@ -7,22 +36,50 @@
 ---@param  text string # The content of file
 ---@return nil|diff[]
 function OnSetText(uri, text)
+    ---@type diff[]
     local diffs = {}
-
-    local pos = text:match('^%s*()#')
+    -- Change `#` (valid Supcom Lua comment) to `--` (valid in language server's lua)
+    -- get first line
+    local pos = StringMatch(text, '^%s*()#')
     if pos ~= nil then
         diffs[#diffs + 1] = {
             start = pos,
             finish = pos,
             text = '--'
         }
     end
-    for pos in text:gmatch '\r\n%s*()#' do
+    -- get any lines after that
+    for pos in StringGmatch(text, '\r\n%s*()#') do
         diffs[#diffs + 1] = {
             start = pos,
             finish = pos,
             text = '--'
         }
     end
+    -- Change `{&1 &1}` (valid Supcom Lua) to `{}` (valid in language server's lua)
+    -- It's changed inside comments too, but lua regex doesn't make that easy to fix.
+    for start, finish in StringGmatch(text, '(){&%d+ &%d+}()') do
+        diffs[#diffs + 1] = {
+            start = start,
+            finish = finish - 1,
+            text = '{}',
+        }
+    end
+
+    if locationOfRepository then
+        -- prepend the content of hooked files just like the game would
+        local first, last, hookDir = StringFind(uri, '/hook(/[%w/]+.lua)')
+        if hookDir then
+            local repoFile = IoOpen(locationOfRepository .. hookDir)
+            if repoFile then
+                diffs[#diffs + 1] = {
+                    start = 1,
+                    finish = 1,
+                    text = repoFile:read("*a")
+                }
+            end
+        end
+    end
+
     return diffs
 end

changelog/snippets/fix.6682.md

@@ -0,0 +1 @@
+- (#6682) Fix pre-allocated table declaration causing syntax errors in intellisense.

changelog/snippets/other.6682.md

@@ -0,0 +1,3 @@
+- (#6682) Add intellisense support for hooking files that are from the repository.
+
+  The simplest way to use it is to copy the setting `"Lua.runtime.plugin": ".vscode/fa-plugin.lua",` into your workspace settings and the file `fa-plugin.lua` into your `.vscode` folder.

lua/lazyvar.lua

@@ -291,7 +291,6 @@ function Create(initial)
     end
 
     ---@type LazyVar
-    ---@diagnostic disable-next-line:assign-type-mismatch,miss-symbol,exp-in-action,unknown-symbol
     local result = {&1 &8} -- preallocate table with hashsize=1, arraysize=8
     setmetatable(result, LazyVarMetaTable)
     result[1] = initial