Derive for remote types

serde_codegen_internals/src/check.rs

@@ -0,0 +1,20 @@
+use ast::{Body, Item};
+use Ctxt;
+
+/// Cross-cutting checks that require looking at more than a single attrs
+/// object. Simpler checks should happen when parsing and building the attrs.
+pub fn check(cx: &Ctxt, item: &Item) {
+    match item.body {
+        Body::Enum(_) => {
+            if item.body.has_getter() {
+                cx.error("#[serde(getter = \"...\")] is not allowed in an enum");
+            }
+        }
+        Body::Struct(_, _) => {
+            if item.body.has_getter() && item.attrs.remote().is_none() {
+                cx.error("#[serde(getter = \"...\")] can only be used in structs \
+                          that have #[serde(remote = \"...\")]");
+            }
+        }
+    }
+}