This reduces some redundancy in the AST data structures and cruft in
the code that works with them. To get a def_id from a node_id, apply
ast::local_def, which adds the local crate_num to the given node_id.
Most code only deals with crate-local node_ids, and won't have to
create def_ids at all.
Revert "rustc: Export only what's needed from middle::ty"
This reverts commit 4255d58aa5.
Revert "rustc: Make name resolution errors less fatal"
This reverts commit b8ab9ea89c.
Revert "rustc: Make import resolution errors less fatal"
This reverts commit 92a8ae94b9.
Revert "rustc: Export only what's used from middle::resolve"
This reverts commit 4539a2cf7a.
Revert "rustc: Re-introduce session.span_err, session.err"
This reverts commit 7fe9a88e31.
Revert "rustc: Rename session.span_err -> span_fatal, err -> fatal"
This reverts commit c394a7f49a.
With the changing of receive semantics the parser has been putting the rhs
expression in the first argument of expr_recv and the lhs in the second, and
all subsequent passes have been referring to them backwords (but still doing
the right thing because they were assuming that lhs was the port and rhs was
the receiver).
This makes all code agree on what lhs and rhs mean for receive expressions.
Most of the fields in an AST item were present in all variants. Things
could be simplified considerably by putting them in the rec rather
than in the variant tags.
Right now the only thing that it adds to meta_item is an indication of whether
the attribute was declared inside or outside the item, but I expect it will
become more useful.
Issue #487
Since the decl in a for or for-each loop must always be a local
decl, I changed the AST to express this. Fewer potential match
failures and "the impossible happened" error messages = yay!
Generate appropriate constraints for calls to functions with
preconditions, and reject calls where those constraints don't
hold true in the prestate.
...by which I mean that it works for one test case :-)
Before, all aliases were implicitly mutable, and writing
&mutable was the same as writing &. Now, the two are
distinguished, and assignments to regular aliases are
no longer allowed.
Changed function types to include a list of constraints. Added
code for parsing and pretty-printing constraints. This necessitated
splitting pprust into two files (pprust and ppaux) to break a
circulate dependency, as ty_to_str now needs to print out constraints,
which may include literals, but pprust depended on ty.
