Commit Graph

45 Commits

Author SHA1 Message Date
Michael Sullivan
cfd1f74ebb Bring swap through typechecking and typestate. 2011-06-16 11:47:54 -07:00
Marijn Haverbeke
15f71b3600 Refactor ast::item representation
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.
2011-06-16 13:32:35 +02:00
Graydon Hoare
ce72993488 Reformat source tree (minus a couple tests that are still grumpy). 2011-06-15 11:19:50 -07:00
Brian Anderson
1c9277e0d3 rustc: Make room in remaining AST item nodes for attributes
Issue #487
2011-06-15 09:48:55 -07:00
Brian Anderson
31116dcdd5 rustc: Make room in item_mod for metadata
Issue #487
2011-06-15 09:46:37 -07:00
Marijn Haverbeke
471436a299 Implement function expressions/anonymous functions
Looks like 'fn(..arg..) -> ret {body;}. They don't support type
parameters or upvars yet.
2011-06-14 18:22:46 +02:00
Tim Chevalier
d65ad8c31c Change decl to local in expr_for and expr_for_each
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!
2011-06-13 17:33:04 -07:00
Tim Chevalier
698c6406ba Reject programs with unsatisfied predicate constraints
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 :-)
2011-06-10 19:17:15 -07:00
Patrick Walton
5318248f24 rustc: Annotate vector and string literals in the AST with their uniqueness or lack thereof 2011-06-09 17:11:21 -07:00
Patrick Walton
1c48102838 rustc: Add ty_istr and ty_ivec types 2011-06-09 16:23:19 -07:00
Tim Chevalier
17ff2a0d79 Further support for predicate constraints
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.
2011-06-09 11:37:52 -07:00
Josh Matthews
2235fb73ef Add optional message to fail. 2011-06-08 04:02:55 -04:00
Graydon Hoare
721c5bbee8 More work on proper linkage name-mangling. Almost right, aside from version numbers. 2011-06-07 18:08:17 -07:00
Graydon Hoare
088ab03fdb Add spans to fields, args, methods. Improve pp of same. 2011-06-03 15:42:42 -07:00
Rafael Ávila de Espíndola
ba74c6cfdc Boilerplate for pointers. Sorry for missing this on the first patch. 2011-06-03 15:02:58 -04:00
Patrick Walton
af9272f70e rustc: Remove rustboot workaround from walk::default_visitor() 2011-06-01 16:52:22 -07:00
Patrick Walton
8851ae0423 rustc: Allow walking over patterns 2011-06-01 16:47:24 -07:00
Paul Stansifer
9f5dddf08c Now imports are not re-exported unless 'export' is explicitly used. 2011-05-31 18:43:26 -07:00
Michael Sullivan
5e7bba3d23 Insert plumbing for move that behaves just like assign. 2011-05-31 17:39:14 -07:00
Eric Holk
84a56ed7cd Teach the compiler to understand yield and join, as well as using task as a type name. 2011-05-31 16:28:13 -07:00
Graydon Hoare
b48cab962a Add span to field to catch per-field comments in rec exprs. 2011-05-31 11:00:47 -07:00
Brian Anderson
81fc2d8728 rustc: Remove unneeded type params from alt patterns 2011-05-31 01:23:53 -04:00
Tim Chevalier
4f792f2dbb Track spans for each local variable in typestate
This lets us print better messages in situations with name
shadowing.
2011-05-26 18:14:32 -07:00
Lindsey Kuper
c3410bf927 More work on anonymous objects. 2011-05-20 17:59:56 -07:00
Tim Chevalier
a08a376d6e Make controlflow part of a function type
Change ty_fn to have a controlflow field. A 'controlflow' is
essentially a bit of data that says whether or not this function
never returns to the caller (if it never returns, that means it calls
"fail" or another "never-returns" function on every control path).

Also add syntax for annotating functions that never return:

fn foo() -> ! {
   fail;
}

for example. Functions marked with ! implicitly have a result type of
ty_bot, which is a new type that this commit also adds.
2011-05-20 16:57:37 -07:00
Tim Chevalier
e1844d2719 Add ann as an argument to visit_fn 2011-05-19 11:40:16 -07:00
Tim Chevalier
2cd769e358 Add ident as an argument to visit_fn (typestate wants it) 2011-05-19 11:40:16 -07:00
Tim Chevalier
dc83c84662 Add visit_fn_pre and visit_fn_post fields to visitors
Added visit_fn_pre and visit_fn_post fields that get applied to
both regular functions and methods.
2011-05-19 11:40:16 -07:00
Patrick Walton
10503a4a02 rustc: Don't rebuild the AST when writing back locals 2011-05-17 19:00:29 -07:00
Tim Chevalier
971b5d5151 Started adding support for return checking and non-returning function annotations
* Reorganized typestate into several modules.

* Made typestate check that any function with a non-nil return type
  returns a value. For now, the check is a warning and not an error
  (see next item).

* Added a "bot" type (prettyprinted as _|_), for constructs like be, ret, break, cont, and
  fail that don't locally return a value that can be inspected. "bot"
  is distinct from "nil". There is no concrete syntax for _|_, while
  the concrete syntax for the nil type is ().

* Added support to the parser for a ! annotation on functions whose
  result type is _|_. Such a function is required to have either a
  fail or a call to another ! function that is reached in all control
  flow paths. The point of this annotation is to mark functions like
  unimpl() and span_err(), so that an alt with a call to err() in one
  case isn't a false positive for the return-value checker. I haven't
  actually annotated anything with it yet.

* Random bugfixes:

* * Fixed bug in trans::trans_binary that was throwing away the
    cleanups for nested subexpressions of an and or or
    (tests: box-inside-if and box-inside-if2).

** In typeck, unify the expected type arguments of a tag with the
   actual specified arguments.
2011-05-16 16:59:25 -07:00
Lindsey Kuper
b6f35c6a4b More work toward anonymous objects. 2011-05-13 17:35:13 -07:00
Lindsey Kuper
d3242b9644 Bug fixes.
Fixed infinite loop on anonymous objects in parser; added
expr_anon_obj to walk.rs; fixed syntax of test case.
2011-05-13 17:35:13 -07:00
Marijn Haverbeke
7082bf4478 Ensure visit_ty is called on type parameters during walk 2011-05-13 11:35:25 +02:00
Marijn Haverbeke
39a000714a Add visit_arm and visit_method to walk.rs
The resolver needs to update its state for individual arms and
methods.
2011-05-13 11:34:51 +02:00
Marijn Haverbeke
3816e57fd2 Downcase std modules again, move to :: for module dereferencing
This should be a snapshot transition.
2011-05-12 21:30:44 +02:00
Marijn Haverbeke
358a1aeec9 Keep resolve data in external hash table, rather than embedded defs
One step closer to removing fold and having a single, immutable AST.
Resolve still uses fold, because it has to detect and transform
expr_field expressions. If we go through on our plan of moving to a
different syntax for module dereferencing, the parser can spit out
expr_field expressions, and resolve can move to walk.

(I am truly sorry for the things I did in typestate_check.rs. I expect
we'll want to change that to walk as well in the near future, at which
point it should probably pass around a context record, which could
hold the def_map.)
2011-05-12 15:40:21 +02:00
Graydon Hoare
476442e48c Alias-ify walk, typeck, metadata. Cuts another 80kb off rustc. 2011-05-09 16:17:17 -07:00
Marijn Haverbeke
a3ec0b1f64 Rename std modules to be camelcased
(Have fun mergining your stuff with this.)
2011-05-06 22:51:19 +02:00
Patrick Walton
147a2d655f Un-revert "Use different syntax for checks that matter to typestate", fixing the problem.
This reverts commit d08b443fff.
2011-05-02 17:50:46 -07:00
Graydon Hoare
d08b443fff Revert "Use different syntax for checks that matter to typestate"
This reverts commit aa25f22f19. It broke stage2, not sure why yet.
2011-05-02 17:35:33 -07:00
Tim Chevalier
aa25f22f19 Use different syntax for checks that matter to typestate
This giant commit changes the syntax of Rust to use "assert" for
"check" expressions that didn't mean anything to the typestate
system, and continue using "check" for checks that are used as
part of typestate checking.

Most of the changes are just replacing "check" with "assert" in test
cases and rustc.
2011-05-02 12:16:29 -07:00
Graydon Hoare
c0d98cec45 Fix walk bug that coupled with marijns work to regress stage1. 2011-04-20 22:52:33 +00:00
Marijn Haverbeke
fc6fbc1ed0 Integrate walk.rs 2011-04-20 12:35:07 +02:00
Marijn Haverbeke
9bfc8bf11e Add log_err to rustboot 2011-04-19 16:57:13 +02:00
Graydon Hoare
4763cd39ca Boilerplate city, for anyone who wants it. 2011-04-18 18:32:05 -07:00