Pull codegen into it's own crate

serde_codegen/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "serde_codegen"
+version = "0.4.0"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "Macros to auto-generate implementations for the serde framework"
+repository = "https://github.com/erickt/rust-serde"
+
+[dependencies]
+aster = "*"
+quasi = "*"
+quasi_macros = "*"

serde_codegen/src/field.rs

@@ -7,7 +7,7 @@ use syntax::ptr::P;
 
 use aster;
 
-use attr::FieldAttrs;
+use super::attr::FieldAttrs;
 
 enum Rename<'a> {
     None,

serde_codegen/src/lib.rs

@@ -0,0 +1,24 @@
+#![feature(custom_derive, plugin, rustc_private, unboxed_closures)]
+#![plugin(quasi_macros)]
+
+extern crate aster;
+extern crate quasi;
+extern crate rustc;
+extern crate syntax;
+
+mod attr;
+mod de;
+mod field;
+mod ser;
+
+pub fn register(reg: &mut rustc::plugin::Registry) {
+    reg.register_syntax_extension(
+        syntax::parse::token::intern("derive_Serialize"),
+        syntax::ext::base::Decorator(
+            Box::new(ser::expand_derive_serialize)));
+
+    reg.register_syntax_extension(
+        syntax::parse::token::intern("derive_Deserialize"),
+        syntax::ext::base::Decorator(
+            Box::new(de::expand_derive_deserialize)));
+}

serde_macros/Cargo.toml

@@ -11,6 +11,4 @@ name = "serde_macros"
 plugin = true
 
 [dependencies]
-aster = "*"
-quasi = "*"
-quasi_macros = "*"
+serde_codegen = { version = "*", path = "../serde_codegen" }

serde_macros/src/lib.rs

@@ -1,28 +1,10 @@
-#![feature(custom_derive, plugin, plugin_registrar, rustc_private, unboxed_closures)]
-#![plugin(quasi_macros)]
+#![feature(plugin_registrar, rustc_private)]
 
-extern crate aster;
-extern crate quasi;
+extern crate serde_codegen;
 extern crate rustc;
-extern crate syntax;
-
-use syntax::ext::base::Decorator;
-use syntax::parse::token;
-use rustc::plugin::Registry;
-
-mod attr;
-mod field;
-mod de;
-mod ser;
 
 #[plugin_registrar]
 #[doc(hidden)]
-pub fn plugin_registrar(reg: &mut Registry) {
-    reg.register_syntax_extension(
-        token::intern("derive_Serialize"),
-        Decorator(Box::new(ser::expand_derive_serialize)));
-
-    reg.register_syntax_extension(
-        token::intern("derive_Deserialize"),
-        Decorator(Box::new(de::expand_derive_deserialize)));
+pub fn plugin_registrar(reg: &mut rustc::plugin::Registry) {
+    serde_codegen::register(reg);
 }