1 files changed, 26 insertions, 0 deletions
diff --git a/script/core/diagnostics/await-in-sync.lua b/script/core/diagnostics/await-in-sync.lua
new file mode 100644
index 00000000..5fb6467d
--- /dev/null
+++ b/script/core/diagnostics/await-in-sync.lua
@@ -0,0 +1,26 @@
+local files = require 'files'
+local guide = require 'parser.guide'
+local vm    = require 'vm'
+local lang  = require 'language'
+
+return function (uri, callback)
+    local state = files.getState(uri)
+    if not state then
+        return
+    end
+
+    guide.eachSourceType(state.ast, 'call', function (source)
+        local currentFunc = guide.getParentFunction(source)
+        if currentFunc and vm.isAsync(currentFunc) then
+            return
+        end
+        if not vm.isAsync(source.node, true) then
+            return
+        end
+        callback {
+            start   = source.node.start,
+            finish  = source.node.finish,
+            message = lang.script('DIAG_AWAIT_IN_SYNC'),
+        }
+    end)
+end