build(ariadne): vendor clap

third_party/crates/once_cell_polyfill-1.70.2/src/sync/mod.rs

@@ -0,0 +1,41 @@
+#[derive(Debug, Clone, Default, Eq, PartialEq)]
+pub struct OnceLock<T>(std::sync::OnceLock<T>);
+
+impl<T> OnceLock<T> {
+    pub const fn new() -> Self {
+        Self(std::sync::OnceLock::new())
+    }
+
+    pub fn get(&self) -> Option<&T> {
+        self.0.get()
+    }
+
+    pub fn get_mut(&mut self) -> Option<&mut T> {
+        self.0.get_mut()
+    }
+
+    pub fn set(&self, value: T) -> Result<(), T> {
+        self.0.set(value)
+    }
+
+    pub fn get_or_init<F>(&self, f: F) -> &T
+    where
+        F: FnOnce() -> T,
+    {
+        self.0.get_or_init(f)
+    }
+
+    pub fn into_inner(self) -> Option<T> {
+        self.0.into_inner()
+    }
+
+    pub fn take(&mut self) -> Option<T> {
+        self.0.take()
+    }
+}
+
+impl<T> From<T> for OnceLock<T> {
+    fn from(value: T) -> Self {
+        Self(value.into())
+    }
+}