1 files changed, 34 insertions, 33 deletions
diff --git a/server-beta/src/core/diagnostics/redundant-parameter.lua b/server-beta/src/core/diagnostics/redundant-parameter.lua
index 79c259d8..04012ef4 100644
--- a/server-beta/src/core/diagnostics/redundant-parameter.lua
+++ b/server-beta/src/core/diagnostics/redundant-parameter.lua
@@ -5,46 +5,46 @@ local lang     = require 'language'
 local define   = require 'proto.define'
 local library  = require 'library'
 
-local function packLibraryArgs(source)
+local function countLibraryArgs(source)
     local func = searcher.getLibrary(source)
     if not func then
         return nil
     end
-    local result = {}
+    local result = 0
     if not func.args then
         return result
     end
-    for _, lib in ipairs(func.args) do
-        result[#result+1] = lib
+    if func.args[#func.args].type == '...' then
+        return math.maxinteger
     end
+    result = result + #func.args
     return result
 end
 
-local function packCallArgs(source)
-    local result = {}
+local function countCallArgs(source)
+    local result = 0
     if not source.args then
-        return result
+        return 0
     end
     if source.node and source.node.type == 'getmethod' then
-        result[#result+1] = source.node.node
-    end
-    for _, arg in ipairs(source.args) do
-        result[#result+1] = arg
+        result = result + 1
     end
+    result = result + #source.args
     return result
 end
 
-local function packFuncArgs(source)
-    local result = {}
+local function countFuncArgs(source)
+    local result = 0
     if not source.args then
         return result
     end
-    if source.parent and source.parent.type == 'setmethod' then
-        result[#result+1] = source.parent.node
+    if source.args[#source.args].type == '...' then
+        return math.maxinteger
     end
-    for _, arg in ipairs(source.args) do
-        result[#result+1] = arg
+    if source.parent and source.parent.type == 'setmethod' then
+        result = result + 1
     end
+    result = result + #source.args
     return result
 end
 
@@ -55,8 +55,8 @@ return function (uri, callback)
     end
 
     guide.eachSourceType(ast.ast, 'call', function (source)
-        local callArgs = packCallArgs(source)
-        if not callArgs then
+        local callArgs = countCallArgs(source)
+        if callArgs == 0 then
             return
         end
 
@@ -66,32 +66,33 @@ return function (uri, callback)
             if info.mode == 'value' then
                 local src = info.source
                 if src.type == 'function' then
-                    local args = packFuncArgs(src)
-                    if args and (not funcArgs or #funcArgs < #args) then
+                    local args = countFuncArgs(src)
+                    if not funcArgs or args > funcArgs then
                         funcArgs = args
                     end
                 end
             end
         end)
 
-        funcArgs = funcArgs or packLibraryArgs(func)
+        funcArgs = funcArgs or countLibraryArgs(func)
         if not funcArgs then
             return
         end
 
-        local lastArg = funcArgs[#funcArgs]
-        if lastArg and lastArg.type == '...' then
+        local delta = callArgs - funcArgs
+        if delta <= 0 then
             return
         end
-
-        for i = #funcArgs + 1, #callArgs do
-            local arg = callArgs[i]
-            callback {
-                start   = arg.start,
-                finish  = arg.finish,
-                tags    = { define.DiagnosticTag.Unnecessary },
-                message = lang.script('DIAG_OVER_MAX_ARGS', #funcArgs, #callArgs)
-            }
+        for i = #source.args - delta + 1, #source.args do
+            local arg = source.args[i]
+            if arg then
+                callback {
+                    start   = arg.start,
+                    finish  = arg.finish,
+                    tags    = { define.DiagnosticTag.Unnecessary },
+                    message = lang.script('DIAG_OVER_MAX_ARGS', funcArgs, callArgs)
+                }
+            end
         end
     end)
 end