I believe this patch incorporates all expected syntax changes from extern
function reform (#3678). You can now write things like:
extern "<abi>" fn foo(s: S) -> T { ... }
extern "<abi>" mod { ... }
extern "<abi>" fn(S) -> T
The ABI for foreign functions is taken from this syntax (rather than from an
annotation). We support the full ABI specification I described on the mailing
list. The correct ABI is chosen based on the target architecture.
Calls by pointer to C functions are not yet supported, and the Rust type of
crust fns is still *u8.
- Removed space between struct name and parentheses
- Fixed indentation of the rest of the file (missing end)
- Don't print parentheses for structs with no fields
- Added test
This is a natural extension of #4887, and handles the following three cases:
~~~~
a line with only /s
////////////////////////////////////////////
a line with only /s followed by whitespace
////////////////////////////////////////////
a block comment with only *s between two /s
/********************************/
~~~~
Changes:
- Refactor move mode computation
- Removes move mode arguments, unary move, capture clauses
(though they still parse for backwards compatibility)
- Simplify how moves are handled in trans
- Fix a number of illegal copies that cropped up
- Workaround for bug involving def-ids in params
(see details below)
Future work (I'll open bugs for these...):
- Improve error messages for moves that are due
to bindings
- Add support for moving owned content like a.b.c
to borrow check, test in trans (but I think it'll
"just work")
- Proper fix for def-ids in params
Def ids in params:
Move captures into a map instead of recomputing.
This is a workaround for a larger bug having to do with the def-ids associated
with ty_params, which are not always properly preserved when inlining. I am
not sure of my preferred fix for the larger bug yet. This current fix removes
the only code in trans that I know of which relies on ty_param def-ids, but
feels fragile.
Fixes#1896 which was never truly fixed, just masked.
The given tests would have failed had they used `~fn()` and
not `@fn()`. They now result in compilation errors.
Fixes#2978.
Necessary first step for #2202, #2263.
This reverts commit f712b2d76b.
In alt arms, the parser needs to do a little lookahead to determine
whether it's looking at a record literal or a block.
Also there are some indentation issues in the expected source.
