1 files changed, 28 insertions, 0 deletions
diff --git a/script/plugins/ffi/c-parser/util.lua b/script/plugins/ffi/c-parser/util.lua
new file mode 100644
index 00000000..cb493efa
--- /dev/null
+++ b/script/plugins/ffi/c-parser/util.lua
@@ -0,0 +1,28 @@
+local m = {}
+
+local function tableLenEqual(t, len)
+    for key, value in pairs(t) do
+        len = len - 1
+        if len < 0 then
+            return false
+        end
+    end
+    return true
+end
+
+local function isSingleNode(ast)
+    if type(ast) ~= 'table' then
+        return false
+    end
+    local len = #ast
+    return len == 1 and tableLenEqual(ast, len)
+end
+
+function m.expandSingle(ast)
+    if isSingleNode(ast) then
+        return ast[1]
+    end
+    return ast
+end
+
+return m