Closes #14303.
let lifetimes = self.parse_lifetimes();
let mut seen_default = false;
let ty_params = self.parse_seq_to_gt(Some(token::COMMA), |p| {
+ p.forbid_lifetime();
let ty_param = p.parse_ty_param();
if ty_param.default.is_some() {
seen_default = true;
let lifetimes = self.parse_lifetimes();
let result = self.parse_seq_to_gt(
Some(token::COMMA),
- |p| p.parse_ty(false));
+ |p| {
+ p.forbid_lifetime();
+ p.parse_ty(false)
+ }
+ );
(lifetimes, result.into_vec())
}
+ fn forbid_lifetime(&mut self) {
+ if Parser::token_is_lifetime(&self.token) {
+ self.span_fatal(self.span, "lifetime parameters must be declared \
+ prior to type parameters");
+ }
+ }
+
fn parse_fn_args(&mut self, named_args: bool, allow_variadic: bool)
-> (Vec<Arg> , bool) {
let sp = self.span;
--- /dev/null
+// Copyright 2014 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.
+
+enum X<'a, T, 'b> {
+//~^ ERROR lifetime parameters must be declared prior to type parameters
+ A(&'a T)
+}
--- /dev/null
+// Copyright 2014 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.
+
+fn foo<'a, T, 'b>(x: &'a T) {}
+//~^ ERROR lifetime parameters must be declared prior to type parameters
--- /dev/null
+// Copyright 2014 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.
+
+fn main() {
+ range(0, 4)
+ .map(|x| x * 2)
+ .collect::<Vec<'a, uint, 'b>>()
+ //~^ ERROR lifetime parameters must be declared prior to type parameters
+}
--- /dev/null
+// Copyright 2014 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 X { x: int }
+
+impl<'a, T, 'b> X {}
+//~^ ERROR lifetime parameters must be declared prior to type parameters
--- /dev/null
+// Copyright 2014 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.
+
+fn bar<'a, T>(x: mymodule::X<'a, T, 'b, 'c>) {}
+//~^ ERROR lifetime parameters must be declared prior to type parameters
--- /dev/null
+// Copyright 2014 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 X<'a, T, 'b> {
+//~^ ERROR lifetime parameters must be declared prior to type parameters
+ x: &'a T
+}
--- /dev/null
+// Copyright 2014 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.
+
+trait Foo<'a, T, 'b> {}
+//~^ ERROR lifetime parameters must be declared prior to type parameters