Macros 1.1

serde_derive/Cargo.toml

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+[package]
+name = "serde_derive"
+version = "0.8.4"
+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 = "=0.8.4", path = "../serde_codegen" }

serde_derive/src/lib.rs

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+#![feature(rustc_macro)]
+
+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()
+}