Fixed the struct map interaction with serial_name. Added a separarte JSON test for serial_name.

benches/bench_log.rs

@@ -844,7 +844,6 @@ fn bench_manual_mem_writer_no_escape(b: &mut Bencher) {
     b.iter(|| {
         let mut wr = MemWriter::with_capacity(1024);
         manual_no_escape(wr.by_ref(), &log);
-
         let _json = wr.unwrap();
 
         //let _json = String::from_utf8(_json).unwrap();

serde_macros/src/lib.rs

@@ -291,15 +291,16 @@ fn deserialize_struct(
     deserializer: Gc<ast::Expr>,
     token: Gc<ast::Expr>
 ) -> Gc<ast::Expr> {
-    let serial_names = definitions.iter().map(|def|
-        find_serial_name(def.node.attrs.iter())
-    ).collect();
+    let serial_names: Vec<Option<token::InternedString>> =
+        definitions.iter().map(|def|
+            find_serial_name(def.node.attrs.iter())
+        ).collect();
 
     let struct_block = deserialize_struct_from_struct(
         cx,
         span,
         type_ident,
-        serial_names,
+        serial_names.as_slice(),
         fields,
         deserializer
     );
@@ -308,6 +309,7 @@ fn deserialize_struct(
         cx,
         span,
         type_ident,
+        serial_names.as_slice(),
         fields,
         deserializer
     );
@@ -332,7 +334,7 @@ fn deserialize_struct_from_struct(
     cx: &ExtCtxt,
     span: Span,
     type_ident: Ident,
-    serial_names: Vec<Option<token::InternedString>>,
+    serial_names: &[Option<token::InternedString>],
     fields: &StaticFields,
     deserializer: Gc<ast::Expr>
 ) -> Gc<ast::Expr> {
@@ -364,6 +366,7 @@ fn deserialize_struct_from_map(
     cx: &ExtCtxt,
     span: Span,
     type_ident: Ident,
+    serial_names: &[Option<token::InternedString>],
     fields: &StaticFields,
     deserializer: Gc<ast::Expr>
 ) -> Gc<ast::Expr> {
@@ -380,9 +383,14 @@ fn deserialize_struct_from_map(
         .collect();
 
     // Declare key arms.
-    let key_arms: Vec<ast::Arm> = fields.iter()
-        .map(|&(name, span)| {
-            let s = cx.expr_str(span, token::get_ident(name));
+    let key_arms: Vec<ast::Arm> = serial_names.iter()
+        .zip(fields.iter())
+        .map(|(serial, &(name, span))| {
+            let serial_name = match serial {
+                &Some(ref string) => string.clone(),
+                &None => token::get_ident(name),
+            };
+            let s = cx.expr_str(span, serial_name);
             quote_arm!(cx,
                 $s => {
                     $name = Some(
@@ -393,9 +401,14 @@ fn deserialize_struct_from_map(
         })
         .collect();
 
-    let extract_fields: Vec<Gc<ast::Stmt>> = fields.iter()
-        .map(|&(name, span)| {
-            let name_str = cx.expr_str(span, token::get_ident(name));
+    let extract_fields: Vec<Gc<ast::Stmt>> = serial_names.iter()
+        .zip(fields.iter())
+        .map(|(serial, &(name, span))| {
+            let serial_name = match serial {
+                &Some(ref string) => string.clone(),
+                &None => token::get_ident(name),
+            };
+            let name_str = cx.expr_str(span, serial_name);
             quote_stmt!(cx,
                 let $name = match $name {
                     Some($name) => $name,

tests/json_struct.rs

@@ -0,0 +1,31 @@
+#![feature(phase)]
+
+extern crate serde;
+#[phase(plugin)]
+extern crate serde_macros;
+
+#[deriving(PartialEq, Show)]
+#[deriving_serializable]
+#[deriving_deserializable]
+struct Test {
+    #[serial_name = "$schema"]
+    schema: String,
+    title: String,
+    #[serial_name = "type"]
+    ty: int
+}
+
+#[test]
+fn test_json_struct() {
+    let input = Test {
+        schema: "a".to_string(),
+        title: "b".to_string(),
+        ty: 3,
+    };
+
+    let s = serde::json::to_string(&input).unwrap();
+    assert_eq!(s.as_slice(), r#"{"$schema":"a","title":"b","type":3}"#);
+
+    let output: Test = serde::json::from_str(s.as_slice()).unwrap();
+    assert_eq!(input, output);
+}