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Author SHA1 Message Date
Tim Chevalier
f841e89443 Support unchecked blocks 
This patch supports the syntax

    unchecked {
      ...
    }

    to disable purity checking within a block. Presumably it will only be
    used within a declared "pure fn". However, there is no checking that it
    doesn't occur elsewhere, and it would be harmless for it to do so.

    I went with Lindsey's suggestion for the syntax, but it's subject to
    change.

    This allows you to write code that uses predicates that call arbitrary
    Rust functions, but you must declare your intentions by wrapping it in
    an unchecked { ... } block. The test case run-pass/unchecked-predicates.rs
    demonstrates how to do that.
 2011-08-25 18:28:23 -07:00
Tim Chevalier
e241f2996d Allow pure fns to have any return type 2011-08-25 17:23:35 -07:00
Patrick Walton
8bd019bdc8 rt: Remember the number of captured type descriptors for objects in the type descriptor crate cache 2011-08-25 14:21:05 -07:00
Brian Anderson
608f7ccded Move ast::pat_id_map to ast::util 2011-08-25 14:15:54 -07:00
Patrick Walton
880fd788eb rustc: Add an extra flag to object tydescs so that shapes know how to find the captured subtydescs 2011-08-25 12:01:10 -07:00
Marijn Haverbeke
fa97793139 Revert "Back out copy-glue" 
This reverts commit 629ee94a0b360e2df1a1bbf7bf61ef346adf36ad.
 2011-08-24 20:30:20 +02:00
Brian Anderson
60547f6500 Use memmove to load istr literals. Issue #855 2011-08-24 10:24:59 -07:00
Marijn Haverbeke
629ee94a0b Back out copy-glue 
This wasn't a good idea after all.
 2011-08-24 17:05:53 +02:00
Marijn Haverbeke
15b540ded4 Use a single builder object throughout 
This seems to be faster than creating separate ones for each block
context.
 2011-08-24 16:57:33 +02:00
Marijn Haverbeke
b9112525ba Move to a more lightweight builder system 
You now do

    bld::Ret(bcx, someval)

where you used to say

    bcx.build.Ret(someval)

Two fewer boxes are allocated for each block context, and build calls
no longer go through a vtable.
 2011-08-24 16:48:10 +02:00
Marijn Haverbeke
9f44df65ef Ensure values created in an alt guard are cleaned up properly 2011-08-24 14:01:56 +02:00
Marijn Haverbeke
e58c48bdda Optimize += [x] into a simple push operation 
This is a preparation for making vectors always-on-the-heap again,
which would cause way too much malloc traffic for this idiom. I will
add an efficient std::vec::push in the future, and migrate += [x] to
that instead.

Reduces compiler code size by 3%
 2011-08-24 13:57:27 +02:00
Marijn Haverbeke
bead045f27 Check for is_terminated after translating a block 
Closes #861
 2011-08-24 10:55:34 +02:00
Brian Anderson
c1f2394245 Zero locals with initializers that may break or terminate. Closes #787 2011-08-23 16:29:21 -07:00
Graydon Hoare
c011f13144 Add kind-checking for assign-op, copy, ret, be, fail exprs. Fix caught kinding-violations in rustc and libstd. 2011-08-23 15:58:53 -07:00
Brian Anderson
a3c8d4a5a5 Recheck the while loop contition after continuing. Closes #825 2011-08-23 14:51:22 -07:00
Brian Anderson
d6e4fa6b44 Teach rustc to append istrs. Issue #855 2011-08-22 17:40:06 -07:00
Brian Anderson
3ab86fb79e Teach rustc to add istrs. Issue #855 2011-08-22 16:39:18 -07:00
Brian Anderson
aae212727d Encode the istr shape correctly. Issue #855 2011-08-22 16:12:42 -07:00
Brian Anderson
6841f3827a Fix ivec self-append. Closes #816 2011-08-22 15:04:28 -07:00
Brian Anderson
0f1f5e67ea Create correct drop glue for istrs. Issue #855 2011-08-22 14:34:55 -07:00
Brian Anderson
fd8ca2cf5d Translate istr literals. Issue #855 2011-08-22 14:34:36 -07:00
Brian Anderson
0a93a48ff5 Extract trans_ivec::alloc_with_heap from trans_ivec::trans_ivec 
Need this for building istrs
 2011-08-22 13:30:53 -07:00
Brian Anderson
309a7534d7 Move trans::ivec to middle::trans_ivec 2011-08-22 12:04:05 -07:00
Brian Anderson
179658e20f Move trans_ivec into the ivec module 2011-08-22 11:23:46 -07:00
Brian Anderson
152cbaade7 Move functions from syntax::ast to syntax::ast_util 
This leaves syntax::ast just defining the AST, which strikes me as somewhat
nicer
 2011-08-22 10:44:04 -07:00
Marijn Haverbeke
7d08678b74 Implement pattern guards 
The syntax is

    alt x {
        mypat where mycond { ... }
    }

The condition may refer to any of the variables bound by the pattern.
When a guard fails, pattern-matching continues with the next pattern.

Closes #857
 2011-08-22 17:49:31 +02:00
Marijn Haverbeke
a2466233b4 Fix bug introduced by 1a45a84e73a92e8a 2011-08-22 17:49:31 +02:00
Marijn Haverbeke
1a45a84e73 Start using copy glue to copy bits that may contain ivecs 
This is not currently necessary, but will be, when I land the new ivec
representation.
 2011-08-22 14:17:27 +02:00
Marijn Haverbeke
3948f132d9 Write a type_structurally_contains, use it to rewrite has_dynamic_size 
(I'll be using this for type-needs-copy-glue in the near future.)
 2011-08-22 14:06:20 +02:00
Marijn Haverbeke
42864377a4 Remove silly restriction on passing type params by alias 
Since they are now passed by pointer, this is no longer a problem
 2011-08-22 14:06:20 +02:00
Marijn Haverbeke
10269dfaeb Replace &ty::t with ty::t throughout the compiler 
Type handles are uints, passing them by reference only causes
unnecessary spilling.
 2011-08-22 14:06:17 +02:00
Marijn Haverbeke
081caf5bb8 Do not check for self-assign unless dest is initialized 
Also, give copy_val and move_val a more sane return type.
 2011-08-22 14:05:56 +02:00
Marijn Haverbeke
c930af74d5 Write call_copy_glue 2011-08-22 14:05:54 +02:00
Marijn Haverbeke
cd5e4c21ee Add skeleton of copy glue that actually copies 2011-08-22 11:41:49 +02:00
Marijn Haverbeke
7588a89553 Rename copy_glue back to take_glue 2011-08-22 10:42:56 +02:00
Marijn Haverbeke
b24f978011 Drop arguments on the caller side, not the callee 
This makes it easier for the caller to optimize the take/drop away for
temporary values, and opens up new possibilities for alias handling.

Breaks tail calls.
 2011-08-22 10:16:09 +02:00
Marijn Haverbeke
35c962e9a1 Pass structural types by pointer, not by value 
If we lose tail calls, this is possible. It simplifies things a lot.

Direct motivation: We want ivecs with pointers pointing into
themselves. When copying those, the pointers have to be adjusted. It
is impossible to this when copying them with Load/Store.
 2011-08-22 10:16:09 +02:00
Patrick Walton
25416bfae1 rustc: Introduce ABI versioning so we can change value representations without breaking the compiler 2011-08-20 14:22:09 -07:00
Brian Anderson
518dc52f85 Reformat 
This changes the indexing syntax from .() to [], the vector syntax from ~[] to
[] and the extension syntax from #fmt() to #fmt[]
 2011-08-20 11:04:00 -07:00
Patrick Walton
d8d9f2adf2 rustc: Unconditionally zero out all GC-relevant types for now 2011-08-19 17:55:42 -07:00
Michael Sullivan
a7e559ee2e Fix polymorphic iterators. Closes #829. 2011-08-19 11:54:46 -07:00
Marijn Haverbeke
bc998c6140 Use move semantics when returning a local var 
(Since the variable won't be used after return anyway.)
 2011-08-19 10:19:21 +02:00
Marijn Haverbeke
f6ae60a432 Temporary work-around for issue #843 2011-08-19 10:19:21 +02:00
Tim Chevalier
0ba1037834 Revert "Disable warnings for unused function arguments. Temporary hack." 
This reverts commit 1ec2211a98aac3f4444301f44eba608d2df818c1.
 2011-08-19 01:15:30 -07:00
Tim Chevalier
1ec2211a98 Disable warnings for unused function arguments. Temporary hack. 2011-08-19 01:10:55 -07:00
Michael Sullivan
30b5f851c5 Merge remote-tracking branch 'graydon/master' 2011-08-18 18:16:11 -07:00
Patrick Walton
031529e3fe rustc: Only emit gc root intrinsic calls if the GC flag is on, to work around #836 2011-08-18 18:13:36 -07:00
Michael Sullivan
e7c8019dd9 Kind check tuples. Closes #841. 2011-08-18 18:13:18 -07:00
Michael Sullivan
f8ac788d66 Print tag names in type error messages. Closes #834. 2011-08-18 18:13:18 -07:00