fix #1365

Author: sumneko

changelog.md

@@ -6,6 +6,7 @@
 * `FIX` [#1354](https://github.com/sumneko/lua-language-server/issues/1354)
 * `FIX` [#1355](https://github.com/sumneko/lua-language-server/issues/1355)
 * `FIX` [#1363](https://github.com/sumneko/lua-language-server/issues/1363)
+* `FIX` [#1365](https://github.com/sumneko/lua-language-server/issues/1365)
 * `FIX` [#1368](https://github.com/sumneko/lua-language-server/issues/1368)
 
 ## 3.5.0

script/core/diagnostics/count-down-loop.lua

@@ -10,12 +10,15 @@ return function (uri, callback)
     end
 
     guide.eachSourceType(state.ast, 'loop', function (source)
-        local maxNumer = source.max and tonumber(source.max[1])
-        if maxNumer ~= 1 then
+        local maxNumber = source.max and tonumber(source.max[1])
+        if not maxNumber then
             return
         end
         local minNumber = source.init and tonumber(source.init[1])
-        if minNumber and minNumber <= 1 then
+        if minNumber and maxNumber and minNumber <= maxNumber then
+            return
+        end
+        if not minNumber and maxNumber > 1 then
             return
         end
         if not source.step then
@@ -24,7 +27,7 @@ return function (uri, callback)
                 finish  = source.max.finish,
                 message = lang.script('DIAG_COUNT_DOWN_LOOP'
                     , ('%s, %s'):format(text:sub(
-                        guide.positionToOffset(state, source.init.start),
+                        guide.positionToOffset(state, source.init.start + 1),
                         guide.positionToOffset(state, source.max.finish)
                     ), '-1')
                 )
@@ -37,7 +40,7 @@ return function (uri, callback)
                     finish  = source.step.finish,
                     message = lang.script('DIAG_COUNT_DOWN_LOOP'
                         , ('%s, -%s'):format(text:sub(
-                            guide.positionToOffset(state, source.init.start),
+                            guide.positionToOffset(state, source.init.start + 1),
                             guide.positionToOffset(state, source.max.finish)
                         ), source.step[1])
                     )

test/diagnostics/common.lua

@@ -1086,6 +1086,18 @@ for i = <!10, 1, 5!> do
 end
 ]]
 
+TEST [[
+for i = <!100, 10, 1!> do
+    print(i)
+end
+]]
+
+TEST [[
+for i = <!1, -10!> do
+    print(i)
+end
+]]
+
 TEST [[
 for i = 1, 1 do
     print(i)