Merge pull request #530 from serde-rs/derive

Macros 1.1

serde_codegen/src/lib.rs

@@ -36,14 +36,7 @@ include!(concat!(env!("OUT_DIR"), "/lib.rs"));
 include!("lib.rs.in");
 
 #[cfg(feature = "with-syntex")]
-pub fn expand<S, D>(src: S, dst: D) -> Result<(), syntex::Error>
+fn syntex_registry() -> syntex::Registry {
-    where S: AsRef<Path>,
-          D: AsRef<Path>,
-{
-    let src = src.as_ref().to_owned();
-    let dst = dst.as_ref().to_owned();
-
-    let expand_thread = move || {
     use syntax::{ast, fold};
 
     /// Strip the serde attributes from the crate.
@@ -80,7 +73,30 @@ pub fn expand<S, D>(src: S, dst: D) -> Result<(), syntex::Error>
 
     reg.add_post_expansion_pass(strip_attributes);
 
-        reg.expand("", src, dst)
+    reg
+}
+
+#[cfg(feature = "with-syntex")]
+pub fn expand_str(src: &str) -> Result<String, syntex::Error> {
+    let src = src.to_owned();
+
+    let expand_thread = move || {
+        syntex_registry().expand_str("", "", &src)
+    };
+
+    syntex::with_extra_stack(expand_thread)
+}
+
+#[cfg(feature = "with-syntex")]
+pub fn expand<S, D>(src: S, dst: D) -> Result<(), syntex::Error>
+    where S: AsRef<Path>,
+          D: AsRef<Path>,
+{
+    let src = src.as_ref().to_owned();
+    let dst = dst.as_ref().to_owned();
+
+    let expand_thread = move || {
+        syntex_registry().expand("", src, dst)
     };
 
     syntex::with_extra_stack(expand_thread)

serde_derive/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "serde_derive"
+version = "0.8.5"
+authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>"]
+license = "MIT/Apache-2.0"
+description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
+homepage = "https://serde.rs"
+repository = "https://github.com/serde-rs/serde"
+documentation = "https://serde.rs/codegen.html"
+keywords = ["serde", "serialization"]
+include = ["Cargo.toml", "src/**/*.rs"]
+
+[lib]
+name = "serde_derive"
+rustc-macro = true
+
+[dependencies]
+serde_codegen = { version = "=0.8.5", path = "../serde_codegen" }
+
+[dev-dependencies]
+fnv = "1.0"
+serde = { version = "0.8.5", path = "../serde" }
+serde_test = { version = "0.8.5", path = "../serde_test" }

serde_derive/src/lib.rs

@@ -0,0 +1,21 @@
+#![feature(rustc_macro, rustc_macro_lib)]
+#![cfg(not(test))]
+
+extern crate rustc_macro;
+extern crate serde_codegen;
+
+use rustc_macro::TokenStream;
+
+#[rustc_macro_derive(Serialize)]
+pub fn derive_serialize(input: TokenStream) -> TokenStream {
+    let item = format!("#[derive(Serialize)]\n{}", input);
+    let expanded = serde_codegen::expand_str(&item).unwrap();
+    expanded.parse().unwrap()
+}
+
+#[rustc_macro_derive(Deserialize)]
+pub fn derive_deserialize(input: TokenStream) -> TokenStream {
+    let item = format!("#[derive(Deserialize)]\n{}", input);
+    let expanded = serde_codegen::expand_str(&item).unwrap();
+    expanded.parse().unwrap()
+}

serde_derive/tests/test.rs

@@ -0,0 +1,8 @@
+#![feature(test, rustc_macro, rustc_attrs)]
+
+#[macro_use]
+extern crate serde_derive;
+
+extern crate test;
+
+include!("../../testing/tests/test.rs.in");