Add new Error::SerdePathToError error type

Author: Levilutz

modules/openapi-generator/src/main/resources/rust/reqwest/api_mod.mustache

@@ -18,6 +18,9 @@ pub enum Error<T> {
     ReqwestMiddleware(reqwest_middleware::Error),
     {{/supportMiddleware}}
     Serde(serde_json::Error),
+    {{#useSerdePathToError}}
+    SerdePathToError(serde_path_to_error::Error<serde_json::Error>),
+    {{/useSerdePathToError}}
     Io(std::io::Error),
     ResponseError(ResponseContent<T>),
     {{#withAWSV4Signature}}
@@ -38,6 +41,9 @@ impl <T> fmt::Display for Error<T> {
             Error::ReqwestMiddleware(e) => ("reqwest-middleware", e.to_string()),
             {{/supportMiddleware}}
             Error::Serde(e) => ("serde", e.to_string()),
+            {{#useSerdePathToError}}
+            Error::SerdePathToError(e) => ("serde", format!("{}: {}", e.path().to_string(), e.inner().to_string())),
+            {{/useSerdePathToError}}
             Error::Io(e) => ("IO", e.to_string()),
             Error::ResponseError(e) => ("response", format!("status code {}", e.status)),
             {{#withAWSV4Signature}}
@@ -61,6 +67,9 @@ impl <T: fmt::Debug> error::Error for Error<T> {
             Error::ReqwestMiddleware(e) => e,
             {{/supportMiddleware}}
             Error::Serde(e) => e,
+            {{#useSerdePathToError}}
+            Error::SerdePathToError(e) => e,
+            {{/useSerdePathToError}}
             Error::Io(e) => e,
             Error::ResponseError(_) => return None,
             {{#withAWSV4Signature}}
@@ -95,6 +104,14 @@ impl <T> From<serde_json::Error> for Error<T> {
     }
 }
 
+{{#useSerdePathToError}}
+impl<T> From<serde_path_to_error::Error<serde_json::Error>> for Error<T> {
+    fn from(e: serde_path_to_error::Error<serde_json::Error>) -> Self {
+        Error::SerdePathToError(e)
+    }
+}
+
+{{/useSerdePathToError}}
 impl <T> From<std::io::Error> for Error<T> {
     fn from(e: std::io::Error) -> Self {
         Error::Io(e)