1 files changed, 21 insertions, 0 deletions
diff --git a/third_party/rust/thiserror-impl/src/lib.rs b/third_party/rust/thiserror-impl/src/lib.rs
new file mode 100644
index 0000000000..15e03073b1
--- /dev/null
+++ b/third_party/rust/thiserror-impl/src/lib.rs
@@ -0,0 +1,21 @@
+#![allow(clippy::blocks_in_if_conditions, clippy::range_plus_one)]
+
+extern crate proc_macro;
+
+mod ast;
+mod attr;
+mod expand;
+mod fmt;
+mod prop;
+mod valid;
+
+use proc_macro::TokenStream;
+use syn::{parse_macro_input, DeriveInput};
+
+#[proc_macro_derive(Error, attributes(backtrace, error, from, source))]
+pub fn derive_error(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    expand::derive(&input)
+        .unwrap_or_else(|err| err.to_compile_error())
+        .into()
+}