serialize: fix fallout

Author: Jorge Aparicio

src/libserialize/json.rs

@@ -1123,12 +1123,25 @@ impl Json {
     }
 }
 
+// NOTE(stage0): remove impl after a snapshot
+#[cfg(stage0)]
 impl<'a> ops::Index<&'a str, Json>  for Json {
     fn index(&self, idx: & &str) -> &Json {
         self.find(*idx).unwrap()
     }
 }
 
+#[cfg(not(stage0))]  // NOTE(stage0): remove cfg after a snapshot
+impl<'a> ops::Index<&'a str>  for Json {
+    type Output = Json;
+
+    fn index(&self, idx: & &str) -> &Json {
+        self.find(*idx).unwrap()
+    }
+}
+
+// NOTE(stage0): remove impl after a snapshot
+#[cfg(stage0)]
 impl ops::Index<uint, Json> for Json {
     fn index<'a>(&'a self, idx: &uint) -> &'a Json {
         match self {
@@ -1138,6 +1151,18 @@ impl ops::Index<uint, Json> for Json {
     }
 }
 
+#[cfg(not(stage0))]  // NOTE(stage0): remove cfg after a snapshot
+impl ops::Index<uint> for Json {
+    type Output = Json;
+
+    fn index<'a>(&'a self, idx: &uint) -> &'a Json {
+        match self {
+            &Json::Array(ref v) => v.index(idx),
+            _ => panic!("can only index Json with uint if it is an array")
+        }
+    }
+}
+
 /// The output of the streaming parser.
 #[deriving(PartialEq, Clone, Show)]
 pub enum JsonEvent {