Get deserialization from bincode working

jmdict/src/serial.rs

@@ -8,6 +8,11 @@ where
     D: Deserializer<'de>,
     T: Deserialize<'de>,
 {
+    if !deserializer.is_human_readable() {
+        // bincode, will have already been serialized as Vec<T>
+        return Ok(Deserialize::deserialize(deserializer)?);
+    }
+
     // Deserialize the JSON value using Serde's Value type
     let value: Value = Deserialize::deserialize(deserializer)?;
 
@@ -24,6 +29,11 @@ pub fn wasei<'de, D>(deserializer: D) -> Result<bool, D::Error>
 where
     D: Deserializer<'de>,
 {
+    if !deserializer.is_human_readable() {
+        // bincode, will have already been serialized as bool
+        return Ok(Deserialize::deserialize(deserializer)?);
+    }
+
     // Deserialize the JSON value using Serde's Value type
     let value: Value = Deserialize::deserialize(deserializer)?;
 
@@ -58,6 +68,11 @@ pub fn lang_default_eng<'de, D>(deserializer: D) -> Result<LanguageCode, D::Erro
 where
     D: Deserializer<'de>,
 {
+    if !deserializer.is_human_readable() {
+        // bincode, will have already been serialized as LanguageCode
+        return Ok(Deserialize::deserialize(deserializer)?);
+    }
+
     lang_option(deserializer)
         .transpose()
         .unwrap_or(Ok(LanguageCode::Eng))
@@ -67,6 +82,11 @@ pub fn lang_option<'de, D>(deserializer: D) -> Result<Option<LanguageCode>, D::E
 where
     D: Deserializer<'de>,
 {
+    if !deserializer.is_human_readable() {
+        // bincode, will have already been serialized as Option<LanguageCode>
+        return Ok(Deserialize::deserialize(deserializer)?);
+    }
+
     Option::deserialize(deserializer)?
         .map(|str: String| parse_language_code(&str))
         .transpose()
@@ -77,6 +97,11 @@ pub fn err_if_not_blank<'de, D>(deserializer: D) -> Result<serde::de::IgnoredAny
 where
     D: Deserializer<'de>,
 {
+    if !deserializer.is_human_readable() {
+        // bincode, will have already been "serialized" as serde::de::IgnoredAny
+        return Ok(serde::de::IgnoredAny);
+    }
+
     let value = serde_json::Value::deserialize(deserializer)?;
     if value.is_null() || value == "" {
         Ok(serde::de::IgnoredAny)