From 84562c426044eef6b1c2f0e964e85ff9d100aa27 Mon Sep 17 00:00:00 2001
From: Jimmy Cuadra <jimmy@jimmycuadra.com>
Date: Sat, 1 Jul 2017 15:26:03 -0700
Subject: [PATCH] Strip serde attributes on aggregate Request and Response
 types.

---
 src/api/mod.rs      | 22 ++++++++++++++++++++++
 src/api/request.rs  |  7 +++++--
 src/api/response.rs | 18 ++++++++++++------
 3 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/src/api/mod.rs b/src/api/mod.rs
index 53cacbe3..8ed40e76 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -1,4 +1,5 @@
 use quote::{ToTokens, Tokens};
+use syn::{Field, MetaItem};
 
 mod metadata;
 mod request;
@@ -9,6 +10,27 @@ use self::metadata::Metadata;
 use self::request::Request;
 use self::response::Response;
 
+pub fn strip_serde_attrs(field: &Field) -> Field {
+    let mut field = field.clone();
+
+    field.attrs = field.attrs.into_iter().filter(|attr| {
+        let (attr_ident, _) = match attr.value {
+            MetaItem::List(ref attr_ident, _) => {
+                (attr_ident, ())
+            }
+            _ => return true,
+        };
+
+        if attr_ident != "serde" {
+            return true;
+        }
+
+        false
+    }).collect();
+
+    field
+}
+
 #[derive(Debug)]
 pub struct Api {
     metadata: Metadata,
diff --git a/src/api/request.rs b/src/api/request.rs
index 92e55e54..be9729b4 100644
--- a/src/api/request.rs
+++ b/src/api/request.rs
@@ -1,6 +1,8 @@
 use quote::{ToTokens, Tokens};
 use syn::{Field, MetaItem, NestedMetaItem};
 
+use api::strip_serde_attrs;
+
 #[derive(Debug)]
 pub struct Request {
     fields: Vec<RequestField>,
@@ -134,7 +136,7 @@ impl ToTokens for Request {
     fn to_tokens(&self, mut tokens: &mut Tokens) {
         tokens.append(quote! {
             /// Data for a request to this API endpoint.
-            #[derive(Debug, Serialize)]
+            #[derive(Debug)]
             pub struct Request
         });
 
@@ -144,7 +146,8 @@ impl ToTokens for Request {
             tokens.append("{");
 
             for request_field in self.fields.iter() {
-                request_field.field().to_tokens(&mut tokens);
+                strip_serde_attrs(request_field.field()).to_tokens(&mut tokens);
+
                 tokens.append(",");
             }
 
diff --git a/src/api/response.rs b/src/api/response.rs
index 591341b0..5a203e13 100644
--- a/src/api/response.rs
+++ b/src/api/response.rs
@@ -1,6 +1,8 @@
 use quote::{ToTokens, Tokens};
 use syn::{Field, MetaItem, NestedMetaItem};
 
+use api::strip_serde_attrs;
+
 #[derive(Debug)]
 pub struct Response {
     fields: Vec<ResponseField>,
@@ -153,12 +155,8 @@ impl ToTokens for Response {
         } else {
             tokens.append("{");
 
-            for response in self.fields.iter() {
-                match *response {
-                    ResponseField::Body(ref field) => field.to_tokens(&mut tokens),
-                    ResponseField::Header(ref field) => field.to_tokens(&mut tokens),
-                    ResponseField::NewtypeBody(ref field) => field.to_tokens(&mut tokens),
-                }
+            for response_field in self.fields.iter() {
+                strip_serde_attrs(response_field.field()).to_tokens(&mut tokens);
 
                 tokens.append(",");
             }
@@ -197,6 +195,14 @@ pub enum ResponseField {
 }
 
 impl ResponseField {
+    fn field(&self) -> &Field {
+        match *self {
+            ResponseField::Body(ref field) => field,
+            ResponseField::Header(ref field) => field,
+            ResponseField::NewtypeBody(ref field) => field,
+        }
+    }
+
     fn is_body(&self) -> bool {
         match *self {
             ResponseField::Body(_) => true,