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Cut down associated_item.

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The part of it dealing with types obfuscates and makes the code less
concise. This commit removes that part.
This commit is contained in:
Nicholas Nethercote 2022-05-17 07:42:57 +10:00
parent e6fa19a3ce
commit 41c10dde95
1 changed files with 18 additions and 20 deletions
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38
library/proc_macro/src/bridge/server.rs
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@ -5,22 +5,24 @@ use super::*;
// FIXME(eddyb) generate the definition of `HandleStore` in `server.rs`.
use super::client::HandleStore;
/// Declare an associated item of one of the traits below, optionally
/// adjusting it (i.e., adding bounds to types and default bodies to methods).
macro_rules! associated_item {
(type FreeFunctions) => (type FreeFunctions: 'static;);
(type TokenStream) => (type TokenStream: 'static + Clone;);
(type TokenStreamBuilder) => (type TokenStreamBuilder: 'static;);
(type TokenStreamIter) => (type TokenStreamIter: 'static + Clone;);
(type Group) => (type Group: 'static + Clone;);
(type Punct) => (type Punct: 'static + Copy + Eq + Hash;);
(type Ident) => (type Ident: 'static + Copy + Eq + Hash;);
(type Literal) => (type Literal: 'static + Clone;);
(type SourceFile) => (type SourceFile: 'static + Clone;);
(type MultiSpan) => (type MultiSpan: 'static;);
(type Diagnostic) => (type Diagnostic: 'static;);
(type Span) => (type Span: 'static + Copy + Eq + Hash;);
pub trait Types {
type FreeFunctions: 'static;
type TokenStream: 'static + Clone;
type TokenStreamBuilder: 'static;
type TokenStreamIter: 'static + Clone;
type Group: 'static + Clone;
type Punct: 'static + Copy + Eq + Hash;
type Ident: 'static + Copy + Eq + Hash;
type Literal: 'static + Clone;
type SourceFile: 'static + Clone;
type MultiSpan: 'static;
type Diagnostic: 'static;
type Span: 'static + Copy + Eq + Hash;
}
/// Declare an associated fn of one of the traits below, adding necessary
/// default bodies.
macro_rules! associated_fn {
(fn drop(&mut self, $arg:ident: $arg_ty:ty)) =>
(fn drop(&mut self, $arg: $arg_ty) { mem::drop($arg) });
@ -34,12 +36,8 @@ macro_rules! declare_server_traits {
($($name:ident {
$(fn $method:ident($($arg:ident: $arg_ty:ty),* $(,)?) $(-> $ret_ty:ty)?;)*
}),* $(,)?) => {
pub trait Types {
$(associated_item!(type $name);)*
}
$(pub trait $name: Types {
$(associated_item!(fn $method(&mut self, $($arg: $arg_ty),*) $(-> $ret_ty)?);)*
$(associated_fn!(fn $method(&mut self, $($arg: $arg_ty),*) $(-> $ret_ty)?);)*
})*
pub trait Server: Types $(+ $name)* {}