Remove the Modifier and Decorator kinds of syntax extensions.

This is a [breaking-change] for syntax extension authors. The fix is to use MultiModifier or MultiDecorator, which have the same functionality but are more flexible. Users of syntax extensions are unaffected.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/librustc/plugin/registry.rs b/src/librustc/plugin/registry.rs
index 2f3625ff22f..e79721b4347 100644
--- a/src/librustc/plugin/registry.rs
+++ b/src/librustc/plugin/registry.rs
@@ -14,7 +14,7 @@ use lint::{LintPassObject, LintId, Lint};
 use session::Session;
 
 use syntax::ext::base::{SyntaxExtension, NamedSyntaxExtension, NormalTT};
-use syntax::ext::base::{IdentTT, Decorator, Modifier, MultiModifier, MultiDecorator};
+use syntax::ext::base::{IdentTT, MultiModifier, MultiDecorator};
 use syntax::ext::base::{MacroExpanderFn, MacroRulesTT};
 use syntax::codemap::Span;
 use syntax::parse::token;
@@ -98,9 +98,7 @@ impl<'a> Registry<'a> {
             IdentTT(ext, _, allow_internal_unstable) => {
                 IdentTT(ext, Some(self.krate_span), allow_internal_unstable)
             }
-            Decorator(ext) => Decorator(ext),
             MultiDecorator(ext) => MultiDecorator(ext),
-            Modifier(ext) => Modifier(ext),
             MultiModifier(ext) => MultiModifier(ext),
             MacroRulesTT => {
                 self.sess.err("plugin tried to register a new MacroRulesTT");