serde_utils: Only use special serialization for human-readable

Non-human-readable serialization (binary) doesn't need hexification.

src/serde_utils.rs

@@ -18,12 +18,17 @@ pub mod btreemap_byte_values {
     {
         use serde::ser::SerializeMap;
 
+        // Don't do anything special when not human readable.
+        if !s.is_human_readable() {
+            serde::Serialize::serialize(v, s)
+        } else {
             let mut map = s.serialize_map(Some(v.len()))?;
             for (key, value) in v.iter() {
                 map.serialize_entry(key, &value.to_hex())?;
             }
             map.end()
         }
+    }
 
     pub fn deserialize<'de, D, T>(d: D)
         -> Result<BTreeMap<T, Vec<u8>>, D::Error> where
@@ -53,9 +58,14 @@ pub mod btreemap_byte_values {
             }
         }
 
+        // Don't do anything special when not human readable.
+        if !d.is_human_readable() {
+            serde::Deserialize::deserialize(d)
+        } else {
             d.deserialize_map(Visitor(PhantomData))
         }
     }
+}
 
 pub mod btreemap_as_seq {
     //! Module for serialization of BTreeMaps as lists of sequences because
@@ -75,12 +85,17 @@ pub mod btreemap_as_seq {
     {
         use serde::ser::SerializeSeq;
 
+        // Don't do anything special when not human readable.
+        if !s.is_human_readable() {
+            serde::Serialize::serialize(v, s)
+        } else {
             let mut seq = s.serialize_seq(Some(v.len()))?;
             for pair in v.iter() {
                 seq.serialize_element(&pair)?;
             }
             seq.end()
         }
+    }
 
     pub fn deserialize<'de, D, T, U>(d: D)
         -> Result<BTreeMap<T, U>, D::Error> where
@@ -112,9 +127,14 @@ pub mod btreemap_as_seq {
             }
         }
 
+        // Don't do anything special when not human readable.
+        if !d.is_human_readable() {
+            serde::Deserialize::deserialize(d)
+        } else {
             d.deserialize_seq(Visitor(PhantomData))
         }
     }
+}
 
 pub mod btreemap_as_seq_byte_values {
     //! Module for serialization of BTreeMaps as lists of sequences because
@@ -149,12 +169,17 @@ pub mod btreemap_as_seq_byte_values {
     {
         use serde::ser::SerializeSeq;
 
+        // Don't do anything special when not human readable.
+        if !s.is_human_readable() {
+            serde::Serialize::serialize(v, s)
+        } else {
             let mut seq = s.serialize_seq(Some(v.len()))?;
             for (key, value) in v.iter() {
                 seq.serialize_element(&BorrowedPair(key, value))?;
             }
             seq.end()
         }
+    }
 
     pub fn deserialize<'de, D, T>(d: D)
         -> Result<BTreeMap<T, Vec<u8>>, D::Error> where
@@ -184,9 +209,14 @@ pub mod btreemap_as_seq_byte_values {
             }
         }
 
+        // Don't do anything special when not human readable.
+        if !d.is_human_readable() {
+            serde::Deserialize::deserialize(d)
+        } else {
             d.deserialize_seq(Visitor(PhantomData))
         }
     }
+}
 
 pub mod hex_bytes {
     //! Module for serialization of byte arrays as hex strings.
@@ -195,14 +225,19 @@ pub mod hex_bytes {
     use hashes::hex::{FromHex, ToHex};
     use serde;
 
-    pub fn serialize<T, S>(bytes: &T, serializer: S) -> Result<S::Ok, S::Error>
+    pub fn serialize<T, S>(bytes: &T, s: S) -> Result<S::Ok, S::Error>
-        where T: AsRef<[u8]>, S: serde::Serializer
+        where T: serde::Serialize + AsRef<[u8]>, S: serde::Serializer
     {
-        serializer.serialize_str(&bytes.as_ref().to_hex())
+        // Don't do anything special when not human readable.
+        if !s.is_human_readable() {
+            serde::Serialize::serialize(bytes, s)
+        } else {
+            s.serialize_str(&bytes.as_ref().to_hex())
+        }
     }
 
     pub fn deserialize<'de, D, B>(d: D) -> Result<B, D::Error>
-        where D: serde::Deserializer<'de>, B: FromHex,
+        where D: serde::Deserializer<'de>, B: serde::Deserialize<'de> + FromHex,
     {
         struct Visitor<B>(::std::marker::PhantomData<B>);
 
@@ -230,6 +265,11 @@ pub mod hex_bytes {
             }
         }
 
+        // Don't do anything special when not human readable.
+        if !d.is_human_readable() {
+            serde::Deserialize::deserialize(d)
+        } else {
             d.deserialize_str(Visitor(::std::marker::PhantomData))
         }
     }
+}