1 files changed, 32 insertions, 0 deletions
diff --git a/script-beta/src/core/diagnostics/redefined-local.lua b/script-beta/src/core/diagnostics/redefined-local.lua
new file mode 100644
index 00000000..f6176794
--- /dev/null
+++ b/script-beta/src/core/diagnostics/redefined-local.lua
@@ -0,0 +1,32 @@
+local files = require 'files'
+local guide = require 'parser.guide'
+local lang  = require 'language'
+
+return function (uri, callback)
+    local ast = files.getAst(uri)
+    if not ast then
+        return
+    end
+    guide.eachSourceType(ast.ast, 'local', function (source)
+        local name = source[1]
+        if name == '_'
+        or name == '_ENV' then
+            return
+        end
+        local exist = guide.getLocal(source, name, source.start-1)
+        if exist then
+            callback {
+                start   = source.start,
+                finish  = source.finish,
+                message = lang.script('DIAG_REDEFINED_LOCAL', name),
+                related = {
+                    {
+                        start  = exist.start,
+                        finish = exist.finish,
+                        uri    = uri,
+                    }
+                },
+            }
+        end
+    end)
+end