From 95cfc35607ccf5f02f02de56a35a9ef50fa23a82 Mon Sep 17 00:00:00 2001 From: Nick Cameron Date: Fri, 26 Sep 2014 17:48:16 +1200 Subject: Put slicing syntax behind a feature gate. [breaking-change] If you are using slicing syntax you will need to add #![feature(slicing_syntax)] to your crate. --- src/libsyntax/feature_gate.rs | 6 ++++++ src/libsyntax/lib.rs | 3 ++- 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'src/libsyntax') diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs index ca6d488772c..38de2a9c284 100644 --- a/src/libsyntax/feature_gate.rs +++ b/src/libsyntax/feature_gate.rs @@ -70,6 +70,7 @@ static KNOWN_FEATURES: &'static [(&'static str, Status)] = &[ ("tuple_indexing", Active), ("associated_types", Active), ("visible_private_types", Active), + ("slicing_syntax", Active), ("if_let", Active), @@ -362,6 +363,11 @@ impl<'a, 'v> Visitor<'v> for Context<'a> { self.gate_feature("if_let", e.span, "`if let` syntax is experimental"); } + ast::ExprSlice(..) => { + self.gate_feature("slicing_syntax", + e.span, + "slicing syntax is experimental"); + } _ => {} } visit::walk_expr(self, e); diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs index a4271544146..64dedd45923 100644 --- a/src/libsyntax/lib.rs +++ b/src/libsyntax/lib.rs @@ -23,7 +23,8 @@ html_favicon_url = "http://www.rust-lang.org/favicon.ico", html_root_url = "http://doc.rust-lang.org/master/")] -#![feature(macro_rules, globs, default_type_params, phase)] +#![allow(unknown_features)] +#![feature(macro_rules, globs, default_type_params, phase, slicing_syntax)] #![feature(quote, struct_variant, unsafe_destructor, import_shadowing)] #![allow(deprecated)] -- cgit 1.4.1-3-g733a5