Vendor deps.

vendor/serde_json/src/lexical/bignum.rs

@@ -0,0 +1,34 @@
+// Adapted from https://github.com/Alexhuszagh/rust-lexical.
+
+//! Big integer type definition.
+
+use super::math::*;
+#[allow(unused_imports)]
+use alloc::vec::Vec;
+
+/// Storage for a big integer type.
+#[derive(Clone, PartialEq, Eq)]
+pub(crate) struct Bigint {
+    /// Internal storage for the Bigint, in little-endian order.
+    pub(crate) data: Vec<Limb>,
+}
+
+impl Default for Bigint {
+    fn default() -> Self {
+        Bigint {
+            data: Vec::with_capacity(20),
+        }
+    }
+}
+
+impl Math for Bigint {
+    #[inline]
+    fn data(&self) -> &Vec<Limb> {
+        &self.data
+    }
+
+    #[inline]
+    fn data_mut(&mut self) -> &mut Vec<Limb> {
+        &mut self.data
+    }
+}