Rename ProcMacroDerive as DeriveProcMacro.

So it matches the existing `AttrProcMacro` and `BangProcMacro` types.

Author: nnethercote

compiler/rustc_expand/src/proc_macro.rs

@@ -72,11 +72,11 @@ impl base::AttrProcMacro for AttrProcMacro {
     }
 }
 
-pub struct ProcMacroDerive {
+pub struct DeriveProcMacro {
     pub client: pm::bridge::client::Client<fn(pm::TokenStream) -> pm::TokenStream>,
 }
 
-impl MultiItemModifier for ProcMacroDerive {
+impl MultiItemModifier for DeriveProcMacro {
     fn expand(
         &self,
         ecx: &mut ExtCtxt<'_>,

compiler/rustc_metadata/src/rmeta/decoder.rs

@@ -11,7 +11,7 @@ use rustc_data_structures::svh::Svh;
 use rustc_data_structures::sync::{Lock, LockGuard, Lrc, OnceCell};
 use rustc_data_structures::unhash::UnhashMap;
 use rustc_expand::base::{SyntaxExtension, SyntaxExtensionKind};
-use rustc_expand::proc_macro::{AttrProcMacro, BangProcMacro, ProcMacroDerive};
+use rustc_expand::proc_macro::{AttrProcMacro, BangProcMacro, DeriveProcMacro};
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res};
 use rustc_hir::def_id::{CrateNum, DefId, DefIndex, CRATE_DEF_INDEX, LOCAL_CRATE};
 use rustc_hir::definitions::{DefKey, DefPath, DefPathData, DefPathHash};
@@ -837,7 +837,7 @@ impl<'a, 'tcx> CrateMetadataRef<'a> {
                     attributes.iter().cloned().map(Symbol::intern).collect::<Vec<_>>();
                 (
                     trait_name,
-                    SyntaxExtensionKind::Derive(Box::new(ProcMacroDerive { client })),
+                    SyntaxExtensionKind::Derive(Box::new(DeriveProcMacro { client })),
                     helper_attrs,
                 )
             }