1 files changed, 58 insertions, 0 deletions
diff --git a/rust/vendor/num-bigint/src/bigint/serde.rs b/rust/vendor/num-bigint/src/bigint/serde.rs
new file mode 100644
index 0000000..5c232f9
--- /dev/null
+++ b/rust/vendor/num-bigint/src/bigint/serde.rs
@@ -0,0 +1,58 @@
+use super::{BigInt, Sign};
+
+use serde::de::{Error, Unexpected};
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+impl Serialize for Sign {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        // Note: do not change the serialization format, or it may break
+        // forward and backward compatibility of serialized data!
+        match *self {
+            Sign::Minus => (-1i8).serialize(serializer),
+            Sign::NoSign => 0i8.serialize(serializer),
+            Sign::Plus => 1i8.serialize(serializer),
+        }
+    }
+}
+
+impl<'de> Deserialize<'de> for Sign {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let sign = i8::deserialize(deserializer)?;
+        match sign {
+            -1 => Ok(Sign::Minus),
+            0 => Ok(Sign::NoSign),
+            1 => Ok(Sign::Plus),
+            _ => Err(D::Error::invalid_value(
+                Unexpected::Signed(sign.into()),
+                &"a sign of -1, 0, or 1",
+            )),
+        }
+    }
+}
+
+impl Serialize for BigInt {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        // Note: do not change the serialization format, or it may break
+        // forward and backward compatibility of serialized data!
+        (self.sign, &self.data).serialize(serializer)
+    }
+}
+
+impl<'de> Deserialize<'de> for BigInt {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let (sign, data) = Deserialize::deserialize(deserializer)?;
+        Ok(BigInt::from_biguint(sign, data))
+    }
+}