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librustc: Make the compiler ignore purity.

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For bootstrapping purposes, this commit does not remove all uses of
the keyword "pure" -- doing so would cause the compiler to no longer
bootstrap due to some syntax extensions ("deriving" in particular).
Instead, it makes the compiler ignore "pure". Post-snapshot, we can
remove "pure" from the language.

There are quite a few (~100) borrow check errors that were essentially
all the result of mutable fields or partial borrows of `@mut`. Per
discussions with Niko I think we want to allow partial borrows of
`@mut` but detect obvious footguns. We should also improve the error
message when `@mut` is erroneously reborrowed.
This commit is contained in:
Patrick Walton
2013-03-16 11:11:31 -07:00
parent c4db4faefa
commit e78f2e2ac5
72 changed files with 373 additions and 540 deletions
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8
src/libsyntax/print/pp.rs
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@@ -452,9 +452,10 @@ pub impl Printer {
self.pending_indentation += amount;
}
fn get_top(&mut self) -> print_stack_elt {
let n = self.print_stack.len();
let print_stack = &mut *self.print_stack;
let n = print_stack.len();
if n != 0u {
self.print_stack[n - 1u]
print_stack[n - 1u]
} else {
print_stack_elt {
offset: 0,
@@ -496,7 +497,8 @@ pub impl Printer {
}
END => {
debug!("print END -> pop END");
fail_unless!((self.print_stack.len() != 0u));
let print_stack = &*self.print_stack;
fail_unless!((print_stack.len() != 0u));
self.print_stack.pop();
}
BREAK(b) => {