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auto merge of #14952 : alexcrichton/rust/const-unsafe-pointers, r=brson

This does not yet change the compiler and libraries from `*T` to `*const T` as
it will require a snapshot to do so.

cc #7362

---

Note that the corresponding RFC, https://github.com/rust-lang/rfcs/pull/68, has not yet been accepted. It was [discussed at the last meeting](https://github.com/rust-lang/rust/wiki/Meeting-weekly-2014-06-10#rfc-pr-68-unsafe-pointers-rename-t-to-const-t) and decided to be accepted, however. I figured I'd get started on the preliminary work for the RFC that will be required regardless.
This commit is contained in:
bors 2014-06-24 04:16:53 +00:00
commit 7689213713
5 changed files with 38 additions and 11 deletions

View file

@ -1365,7 +1365,7 @@ impl<'a> Parser<'a> {
} else if self.token == token::BINOP(token::STAR) {
// STAR POINTER (bare pointer?)
self.bump();
TyPtr(self.parse_mt())
TyPtr(self.parse_ptr())
} else if self.token == token::LBRACKET {
// VECTOR
self.expect(&token::LBRACKET);
@ -1442,6 +1442,19 @@ impl<'a> Parser<'a> {
return TyRptr(opt_lifetime, mt);
}
pub fn parse_ptr(&mut self) -> MutTy {
let mutbl = if self.eat_keyword(keywords::Mut) {
MutMutable
} else if self.eat_keyword(keywords::Const) {
MutImmutable
} else {
// NOTE: after a stage0 snap this should turn into a span_err.
MutImmutable
};
let t = self.parse_ty(true);
MutTy { ty: t, mutbl: mutbl }
}
pub fn is_named_argument(&mut self) -> bool {
let offset = match self.token {
token::BINOP(token::AND) => 1,