ObsoleteConstPointer,
ObsoleteEmptyImpl,
ObsoleteLoopAsContinue,
+ ObsoleteEnumWildcard,
+ ObsoleteStructWildcard
}
impl to_bytes::IterBytes for ObsoleteSyntax {
"`loop` is now only used for loops and `continue` is used for \
skipping iterations"
),
+ ObsoleteEnumWildcard => (
+ "enum wildcard",
+ "use `..` instead of `*` for matching all enum fields"
+ ),
+ ObsoleteStructWildcard => (
+ "struct wildcard",
+ "use `..` instead of `_` for matching trailing struct fields"
+ ),
};
self.report(sp, kind, kind_str, desc);
if first { first = false; }
else { self.expect(&token::COMMA); }
+ etc = *self.token == token::UNDERSCORE || *self.token == token::DOTDOT;
if *self.token == token::UNDERSCORE {
+ // FIXME #5830 activate after snapshot
+ // self.obsolete(*self.span, ObsoleteStructWildcard);
+ }
+ if etc {
self.bump();
if *self.token != token::RBRACE {
self.fatal(
_ => false,
}
};
- if is_star {
+ let is_dotdot = do self.look_ahead(1) |t| {
+ match *t {
+ token::DOTDOT => true,
+ _ => false,
+ }
+ };
+ if is_star | is_dotdot {
// This is a "top constructor only" pat
self.bump();
+ if is_star {
+ // FIXME #5830 activate after snapshot
+ // self.obsolete(*self.span, ObsoleteEnumWildcard);
+ }
self.bump();
self.expect(&token::RPAREN);
pat = PatEnum(enum_path, None);
--- /dev/null
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+struct Foo(int, int, int, int);
+struct Bar{a: int, b: int, c: int, d: int}
+
+pub fn main() {
+ let Foo(..) = Foo(5, 5, 5, 5);
+ let Foo(*) = Foo(5, 5, 5, 5);
+ let Bar{..} = Bar{a: 5, b: 5, c: 5, d: 5};
+ let Bar{_} = Bar{a: 5, b: 5, c: 5, d: 5};
+ //let (..) = (5, 5, 5, 5);
+ //let Foo(a, b, ..) = Foo(5, 5, 5, 5);
+ //let Foo(.., d) = Foo(5, 5, 5, 5);
+ //let (a, b, ..) = (5, 5, 5, 5);
+ //let (.., c, d) = (5, 5, 5, 5);
+ let Bar{b: b, ..} = Bar{a: 5, b: 5, c: 5, d: 5};
+ let Bar{b: b, _} = Bar{a: 5, b: 5, c: 5, d: 5};
+ /*match [5, 5, 5, 5] {
+ [a, ..] => { }
+ }*/
+ /*match [5, 5, 5, 5] {
+ [.., b] => { }
+ }*/
+ /*match [5, 5, 5, 5] {
+ [a, .., b] => { }
+ }*/
+ match [5, 5, 5] {
+ [a, .._] => { }
+ }
+ match [5, 5, 5] {
+ [.._, a] => { }
+ }
+ match [5, 5, 5] {
+ [a, .._, b] => { }
+ }
+}