1 files changed, 0 insertions, 136 deletions
diff --git a/proc-macro-error/proc-macro-error/src/dummy.rs b/proc-macro-error/proc-macro-error/src/dummy.rs
deleted file mode 100644
index f7443b3..0000000
--- a/proc-macro-error/proc-macro-error/src/dummy.rs
+++ /dev/null
@@ -1,136 +0,0 @@
-//! Facility to emit dummy implementations (or whatever) in case
-//! an error happen.
-//!
-//! `compile_error!` does not abort a compilation right away. This means
-//! `rustc` doesn't just show you the error and abort, it carries on the
-//! compilation process looking for other errors to report.
-//!
-//! Let's consider an example:
-//!
-//! ```rust,ignore
-//! use proc_macro::TokenStream;
-//! use proc_macro_error::*;
-//!
-//! trait MyTrait {
-//!     fn do_thing();
-//! }
-//!
-//! // this proc macro is supposed to generate MyTrait impl
-//! #[proc_macro_derive(MyTrait)]
-//! #[proc_macro_error]
-//! fn example(input: TokenStream) -> TokenStream {
-//!     // somewhere deep inside
-//!     abort!(span, "something's wrong");
-//!
-//!     // this implementation will be generated if no error happened
-//!     quote! {
-//!         impl MyTrait for #name {
-//!             fn do_thing() {/* whatever */}
-//!         }
-//!     }
-//! }
-//!
-//! // ================
-//! // in main.rs
-//!
-//! // this derive triggers an error
-//! #[derive(MyTrait)] // first BOOM!
-//! struct Foo;
-//!
-//! fn main() {
-//!     Foo::do_thing(); // second BOOM!
-//! }
-//! ```
-//!
-//! The problem is: the generated token stream contains only `compile_error!`
-//! invocation, the impl was not generated. That means user will see two compilation
-//! errors:
-//!
-//! ```text
-//! error: something's wrong
-//!  --> $DIR/probe.rs:9:10
-//!   |
-//! 9 |#[proc_macro_derive(MyTrait)]
-//!   |                    ^^^^^^^
-//!
-//! error[E0599]: no function or associated item named `do_thing` found for type `Foo` in the current scope
-//!  --> src\main.rs:3:10
-//!   |
-//! 1 | struct Foo;
-//!   | ----------- function or associated item `do_thing` not found for this
-//! 2 | fn main() {
-//! 3 |     Foo::do_thing(); // second BOOM!
-//!   |          ^^^^^^^^ function or associated item not found in `Foo`
-//! ```
-//!
-//! But the second error is meaningless! We definitely need to fix this.
-//!
-//! Most used approach in cases like this is "dummy implementation" -
-//! omit `impl MyTrait for #name` and fill functions bodies with `unimplemented!()`.
-//!
-//! This is how you do it:
-//!
-//! ```rust,ignore
-//! use proc_macro::TokenStream;
-//! use proc_macro_error::*;
-//!
-//!  trait MyTrait {
-//!      fn do_thing();
-//!  }
-//!
-//!  // this proc macro is supposed to generate MyTrait impl
-//!  #[proc_macro_derive(MyTrait)]
-//!  #[proc_macro_error]
-//!  fn example(input: TokenStream) -> TokenStream {
-//!      // first of all - we set a dummy impl which will be appended to
-//!      // `compile_error!` invocations in case a trigger does happen
-//!      set_dummy(quote! {
-//!          impl MyTrait for #name {
-//!              fn do_thing() { unimplemented!() }
-//!          }
-//!      });
-//!
-//!      // somewhere deep inside
-//!      abort!(span, "something's wrong");
-//!
-//!      // this implementation will be generated if no error happened
-//!      quote! {
-//!          impl MyTrait for #name {
-//!              fn do_thing() {/* whatever */}
-//!          }
-//!      }
-//!  }
-//!
-//!  // ================
-//!  // in main.rs
-//!
-//!  // this derive triggers an error
-//!  #[derive(MyTrait)] // first BOOM!
-//!  struct Foo;
-//!
-//!  fn main() {
-//!      Foo::do_thing(); // no more errors!
-//!  }
-//! ```
-
-use proc_macro2::TokenStream;
-use std::cell::Cell;
-
-use crate::check_correctness;
-
-thread_local! {
-    static DUMMY_IMPL: Cell<Option<TokenStream>> = Cell::new(None);
-}
-
-/// Sets dummy token stream which will be appended to `compile_error!(msg);...`
-/// invocations in case you'll emit any errors.
-///
-/// See [guide](../index.html#guide).
-pub fn set_dummy(dummy: TokenStream) -> Option<TokenStream> {
-    check_correctness();
-    DUMMY_IMPL.with(|old_dummy| old_dummy.replace(Some(dummy)))
-}
-
-pub(crate) fn cleanup() -> Option<TokenStream> {
-    DUMMY_IMPL.with(|old_dummy| old_dummy.replace(None))
-}