Commit Graph

1127 Commits (68e2794e1543f91ab8f984127018820897cc0521)

Author SHA1 Message Date
Andrew Kelley 472b7ef7e6 disable byval 2018-06-16 19:37:00 -04:00
Andrew Kelley e311cd562b don't automatically take pointer when passing by non-copying value
this commit does not have all tests passing
2018-06-16 19:37:00 -04:00
Andrew Kelley 59b3dc8907 allow passing by non-copying value
closes #733
2018-06-16 19:36:33 -04:00
Andrew Kelley a7d59086b4 disable load dynamic library test
it's failing on CI. I will troubleshoot it and then re-enable
2018-06-16 19:36:06 -04:00
Andrew Kelley c529b814ee load_dynamic_library test: no need to link libc 2018-06-16 18:54:41 -04:00
Andrew Kelley 48de57d824 add basic std lib code for loading dynamic libraries
this is going to only work for very basic libraries;
I plan to slowly add more features over time to support more
complicated libraries
2018-06-16 17:01:23 -04:00
Alexandros Naskos 4ec09ac243 Enabled optional types of zero bit types with no LLVM DI type. (#1110)
* Zero bit optional types do not need a LLVM DI type
2018-06-14 10:57:28 -04:00
Andrew Kelley 8dd24796c4 disallow implicit casts that break rules for optionals
closes #1102
2018-06-13 11:04:09 -04:00
Andrew Kelley 86adc1ef39 add docs and missing test case for merging error sets
See #367
2018-06-12 19:38:59 -04:00
Andrew Kelley 259413251d fix ability to call mutating methods on zero size structs
closes #838
2018-06-12 15:06:02 -04:00
Andrew Kelley 03c16c6c54 implement @tagName as a switch instead of table lookup
closes #976
closes #1080
2018-06-11 14:58:42 -04:00
Andrew Kelley 77678b2cbc
breaking syntax change: orelse keyword instead of ?? (#1096)
use the `zig-fmt-optional-default` branch to have zig fmt
automatically do the changes.

closes #1023
2018-06-10 01:13:51 -04:00
Andrew Kelley ec1b6f6673
breaking syntax change: ??x to x.? (#1095)
See #1023

This also renames Nullable/Maybe to Optional
2018-06-09 23:42:14 -04:00
Andrew Kelley 6edd81109d nullable pointers follow const-casting rules
any *T -> ?*T cast is allowed implicitly, even
when it occurs deep inside the type, and the cast
is a no-op at runtime.

in order to add this I had to make the comptime value
representation of nullable pointers the same as the
comptime value representation of normal pointers,
so that we don't have to do any recursive transformation
of values when doing this kind of cast.
2018-06-09 00:26:26 -04:00
Jimmi HC bf3d1c1aab Allow access of array.len through a pointer 2018-06-08 09:21:31 +02:00
Andrew Kelley f0b6dac1f2 add implicit casts from `*[N]T`
* to `[]T`
 * to `[*]T`

See #770
2018-06-07 22:41:58 -04:00
Andrew Kelley b65203f573 remove @canImplicitCast builtin
nobody will miss it
2018-06-07 19:50:25 -04:00
Andrew Kelley 31aefa6a21 fix structs that contain types which require comptime
Now, if a struct has any fields which require comptime,
such as `type`, then the struct is marked as requiring
comptime as well. Same goes for unions.

This means that a function will implicitly be called
at comptime if the return type is a struct which contains
a field of type `type`.

closes #586
2018-06-07 18:07:30 -04:00
Andrew Kelley d3693dca73 Pointer Reform: update @typeInfo
* add assertion for trying to do @typeInfo on global error set
 * remove TypeInfo.Slice
 * add TypeInfo.Pointer.Size with possible values
   - One
   - Many
   - Slice

See #770
2018-06-06 00:39:39 -04:00
Andrew Kelley 76c8efd56c add test for not allowing implicit cast from T to [*]const T
See #770
2018-06-05 23:54:14 -04:00
Andrew Kelley bd13e757e7 disable deref syntax for unknown length pointers
See #770
2018-06-05 23:26:43 -04:00
Andrew Kelley 0ccc186869 disable field access for unknown length pointers
See #770
2018-06-05 23:26:43 -04:00
Andrew Kelley 652f4bdf62 disallow unknown-length pointer to opaque
This also means that translate-c has to detect when a pointer to
opaque is happening, and use `*` instead of `[*]`.

See #1059
2018-06-05 18:03:21 -04:00
Andrew Kelley 7a09482536 fix crash when evaluating return type has compile error
closes #1058
2018-06-05 10:48:53 -04:00
Jimmi HC a8146ade2a Renamed UndefinedLiteral to Undefined 2018-06-05 11:54:11 +02:00
Jimmi HC 236c680f6b Removed NullLiteral to Null 2018-06-05 11:30:01 +02:00
Jimmi HC 02cb220faf Renamed "(int/float literal)" to "comptime_int/float" 2018-06-05 11:14:43 +02:00
Andrew Kelley e53b683bd3
Pointer Reform: proper slicing and indexing (#1053)
* enable slicing for single-item ptr to arrays
 * disable slicing for other single-item pointers
 * enable indexing for single-item ptr to arrays
 * disable indexing for other single-item pointers

see #770
closes #386
2018-06-04 22:11:14 -04:00
Andrew Kelley d21a1922eb support `zig fmt: off` and `zig fmt: on` between top level decls
closes #1030
closes #1033
2018-06-04 12:15:02 -04:00
Andrew Kelley 96164ce613 disallow single-item pointer indexing
add pointer arithmetic for unknown length pointer
2018-06-04 01:39:57 -04:00
Andrew Kelley b85b68a7fd better compile error for error sets behind nullable 2018-06-02 15:20:51 -04:00
Andrew Kelley 5f38a01ede run zig fmt 2018-06-01 01:22:35 -04:00
Andrew Kelley 2a7c8c5b10 add test case for pointer to type and slice of type
closes #588
2018-06-01 00:18:10 -04:00
Andrew Kelley 019217d7a2 fix regressions 2018-06-01 00:17:31 -04:00
Andrew Kelley fcbb7426fa use * for pointer type instead of &
See #770

To help automatically translate code, see the
zig-fmt-pointer-reform-2 branch.

This will convert all & into *. Due to the syntax
ambiguity (which is why we are making this change),
even address-of & will turn into *, so you'll have
to manually fix thes instances. You will be guaranteed
to get compile errors for them - expected 'type', found 'foo'
2018-05-31 17:28:07 -04:00
Andrew Kelley ea58f4a5a9 run zig fmt on the codebase 2018-05-30 16:09:11 -04:00
Jimmi HC 2b3af4ef6b fixed #1009
ir_make_type_info_defs already calls resolve_top_level_decl on all Tld
when building the def array. This means, that there is no reason that
analyze_fn_body is nessesary, as the fn type should have already been
resolved completly. The only thing analyze_fn_body does here, is cause
problems with generic functions.
2018-05-30 10:30:09 +02:00
Andrew Kelley 0c16cd2d0e run zig fmt on the codebase
See #1003
2018-05-29 04:23:38 -04:00
Andrew Kelley c029f4bfc4 trailing comma after var args is not supported 2018-05-25 20:41:14 -04:00
Andrew Kelley 08f95d0c2f enum fields with a type are not supported
the c++ codebase lets it slide

the self hosted parser correctly reports a parse error
2018-05-25 01:10:54 -04:00
Andrew Kelley ca49b6f6b4 struct fields with no explicit type are not supported
the c++ codebase lets it slide

the self hosted parser correctly reports a parse error
2018-05-25 00:39:18 -04:00
Andrew Kelley 43085417be update github.com/zig-lang to github.com/ziglang 2018-05-24 21:27:44 -04:00
Andrew Kelley c38b165db4 all tests passing with postfix deref syntax 2018-05-17 23:21:44 -04:00
Andrew Kelley 5cfabdd493 Merge remote-tracking branch 'origin/master' into pointer-reform 2018-05-16 00:02:26 -04:00
Andrew Kelley 74b10c08d1 fix @typeInfo not setting a field to comptime 2018-05-15 14:11:41 -04:00
Andrew Kelley 86a352c45b Merge branch 'master' into pointer-reform 2018-05-13 13:38:03 -04:00
Andrew Kelley a6ae45145f add @newStackCall builtin function
See #1006
2018-05-12 17:35:15 -04:00
Andrew Kelley 277b9cf878 fix comptime code modification of global const
closes #1008
2018-05-11 22:41:44 -04:00
Marc Tiehuis efa39c5343 Fix bigint shift-right partial shift 2018-05-10 22:26:26 +12:00
Andrew Kelley 6928badd85 Merge branch 'master' into pointer-reform 2018-05-09 23:43:07 -04:00
Andrew Kelley bf21747a42 translate-c: fix typedef duplicate definition of variable
closes #998
2018-05-09 20:23:36 -04:00
Jimmi HC 9b29c872ce Added Slice as it's own type info in userland 2018-05-09 09:34:04 +02:00
Andrew Kelley 77a1a216d2 tagged union field access prioritizes members over enum tags
closes #959
2018-05-07 16:43:20 -04:00
Marc Tiehuis d7b029995c Fix bigint multi-limb shift and masks 2018-05-05 22:40:29 +12:00
Andrew Kelley b9e320dd52
Merge pull request #951 from alexnask/reflect_reify
Metaprogramming - @typeInfo [DONE]
2018-05-03 23:02:33 -04:00
Jimmi Holst Christensen aa2586de18 Fixed extern enums having the wrong size (#970)
Fixed extern enums having the wrong size

See #977
2018-05-03 22:27:04 -04:00
Andrew Kelley adbb691f46 fix behavior tests for ReleaseSmall 2018-05-02 22:48:04 -04:00
Andrew Kelley 6fd14f23b5 add ReleaseSmall mode in zig tests
closes #969
2018-05-02 22:41:02 -04:00
Alexandros Naskos 131c133bb7 Fixed inlining determination test (#972)
When deciding wether we should inline a scope, look up the parents until we get to a function definition scope
2018-05-02 21:43:07 -04:00
Jimmi Holst Christensen 1a9403f38a Added better support for none pure enums in tranlate C 2018-05-02 21:50:41 +02:00
Alexandros Naskos 7d239414f7 Fixed type info test, added documentation. 2018-05-01 13:42:20 +03:00
Alexandros Naskos 1b6e97355d Added type info tests to behavior test listing 2018-05-01 13:31:14 +03:00
Alexandros Naskos 255c0ef406 Resolved merge conflict. 2018-05-01 13:09:34 +03:00
Alexandros Naskos e1535ee0a9 Added typeInfo tests 2018-05-01 13:01:54 +03:00
Alexandros Naskos ff1c4e1f13 Added tests. 2018-05-01 13:00:39 +03:00
Andrew Kelley ac4d55dec1 behavior tests passing with new pointer deref syntax 2018-05-01 01:53:04 -04:00
Andrew Kelley a35b366eb6 [breaking] delete ptr deref prefix op
start using zig-fmt-pointer-reform branch build of zig fmt
to fix code to use the new syntax

all of test/cases/* are processed, but there are more left
to be done - all the std lib used by the behavior tests
2018-04-30 20:35:54 -04:00
Andrew Kelley 76ab1d2b6c support foo.* for ptr deref
See #770
2018-04-30 14:20:56 -04:00
Andrew Kelley 0bb054e5e7
Merge pull request #930 from zig-lang/float-printing
Finish and fix float printing
2018-04-28 22:43:52 -04:00
Andrew Kelley ec2a81a081 fix compiler-rt ABI for x86_64 windows 2018-04-28 22:03:07 -04:00
Jimmi Holst Christensen fba0347ec4 .ReturnType and @ArgType now emits errors on unresolved types
related: #846
2018-04-28 17:17:48 +02:00
Jimmi Holst Christensen 2fc34eaa58 Functions with infered error set can now return literals
fixes #852
2018-04-28 16:27:31 +02:00
Jimmi Holst Christensen 3178528335 Removed zero sized error set optimization
fixes #762
fixes #818
2018-04-28 14:05:08 +02:00
Andrew Kelley 15bf0c1541 fix interaction between defer and labeled break
closes #830
2018-04-23 18:06:33 -04:00
Andrew Kelley 89a4c373d3 fix bigint twos complement implementation
closes #948
2018-04-23 12:06:18 -04:00
Andrew Kelley 8503eff8c1 add compile error for invalid deref on switch target
closes #945
2018-04-22 23:46:55 -04:00
Andrew Kelley 21767144fc linux: support VDSO for clock_gettime
also fix a compiler crash when using cmpxchg with nullable pointer
2018-04-22 18:11:50 -04:00
Andrew Kelley c4840d78fb add test case for #936 2018-04-21 02:10:22 -04:00
Jimmi Holst Christensen 1b91478bff Optimized field ptr ir for hot path and fix assignment bug 2018-04-19 21:34:18 +02:00
Jimmi Holst Christensen 6b4f6ebd89 Added field builtin function 2018-04-19 20:11:16 +02:00
Andrew Kelley 06909ceaab support break in suspend blocks
* you can label suspend blocks
 * labeled break supports suspend blocks

See #803
2018-04-18 22:21:54 -04:00
Andrew Kelley f1f998e071 improve cmpxchg
* remove @cmpxchg, add @cmpxchgWeak and @cmpxchgStrong
   - See explanations in the langref.
 * add operand type as first parameter
 * return type is ?T where T is the operand type

closes #461
2018-04-18 12:16:42 -04:00
Alexandros Naskos 6492763bef Fixed test build code 2018-04-16 04:06:00 +03:00
Andrew Kelley b9360640ce add @atomicLoad builtin
See #174
2018-04-15 18:12:00 -04:00
Andrew Kelley 859b10d8bf std.math.ln and std.math.exp use float strict mode
closes #920
2018-04-15 15:22:27 -04:00
Andrew Kelley b5459eb987 add @sqrt built-in function
See #767
2018-04-15 13:26:58 -04:00
Andrew Kelley 373b3586a1 inline functions must be stored in const or comptime var
closes #913
2018-04-12 16:26:23 -04:00
Andrew Kelley e48e707c32 allow integer and float literals to be passed to var params
closes #623
2018-04-11 14:47:37 -04:00
Andrew Kelley ee1a4f4c1d error return traces work with async return case 2018-04-08 17:44:29 -04:00
Andrew Kelley 9e98ea552d fix calling convention at callsite of zig-generated fns 2018-04-08 16:40:59 -04:00
Andrew Kelley 032fccf615 fix compile time array concatenation for slices
closes #866
2018-03-28 23:25:12 -04:00
Andrew Kelley 6cb99fdac3 fix crash when compile error in analyzing @panic call 2018-03-27 15:07:45 -04:00
Andrew Kelley aa2995ee39 fix invalid codegen for error return traces across suspend points
See #821

Now the code works correctly, but error return traces are missing
the frames from coroutines.
2018-03-24 22:07:12 -04:00
Andrew Kelley a43c7af3d1 add comptime test for the type of suspend promise 2018-03-24 19:31:00 -04:00
Andrew Kelley 897e783763 add promise->T syntax parsing
closes #857
2018-03-24 19:25:53 -04:00
Andrew Kelley 18af2f9a27 fix async fns with inferred error sets
closes #856
2018-03-24 18:28:32 -04:00
Marc Tiehuis 3d1732ef6c Fix OpqaueType usage in exported c functions
We prefer `struct typename`. If a typedef is required, this must be done
manually after generation.
2018-03-23 20:27:11 +13:00
Andrew Kelley 7a99d63c76 ability to use async function pointers
closes #817
2018-03-22 16:56:03 -04:00
Andrew Kelley f885a1ab61 change async function call syntax
* instead of `async(allocator) call()`, now it is
   `async<allocator> call()`.
 * Fixes syntax ambiguity when leaving off the allocator
 * Fixes parse failure when call is a field access

This sets a precedent for using `<` to pass arguments
to a keyword. This will affect `enum`, `union`, and
`fn` (see #661)
2018-03-21 19:56:41 -04:00
Andrew Kelley d959faa4c7 add test for addIncludeDir for test step 2018-03-17 18:19:23 -04:00
Andrew Kelley efebb6d341 fix tests broken by previous commit 2018-03-14 03:37:54 -04:00
Andrea Orru c828c23f71 Tests for zero-bit field compiler error 2018-03-13 22:07:40 -07:00
Andrew Kelley 7f7823e23c fix casting a function to a pointer causing compiler crash
closes #777
2018-03-13 19:15:20 -04:00
Andrew Kelley bcce77700f some return types disqualify comptime fn call caching
closes #828
2018-03-12 12:56:25 -04:00
Andrew Kelley 5834ff0cc5 don't memoize comptime fn calls that access comptime mutable state
closes #827
2018-03-12 08:35:41 -04:00
Andrew Kelley 1bf2810f33 fix comptime slicing not preserving comptime mutability
* fix comptime slice of slice not preserving mutatibility
   of the comptime data
 * fix comptime slice of pointer not preserving mutability
   of the comptime data

closes #826
2018-03-12 01:21:10 -04:00
Andrew Kelley 49c3922037 fix incorrect setEvalBranchQuota compile error
closes #688
2018-03-12 00:08:52 -04:00
Andrew Kelley 20011a7a1c add behavior test for coroutine frame allocation failure 2018-03-10 01:38:40 -05:00
Andrew Kelley 6db9be8900 don't memoize comptime functions if they can mutate state via parameters
closes #639
2018-03-09 14:20:44 -05:00
Andrew Kelley aaf2230ae8 fix partial inlining of binary math operator using old value
the code was abusing the internal IR API. fixed now.

closes #699
2018-03-08 17:15:55 -05:00
Andrew Kelley 028ec0f2c3 enums with 1 field and explicit tag type still get the tag type
closes #820
2018-03-08 15:22:42 -05:00
Jimmi Holst Christensen 2e010c60ae Translate C now correctly converts ints, floats, ptrs and enums to bools
* Boolean "and" and "or" should also work with these types.
* This new method also simplifies to output code.
2018-03-08 15:34:00 +01:00
Jimmi Holst Christensen b2887620f3 Translate C will now handle ignored return values 2018-03-08 13:15:30 +01:00
Jimmi Holst Christensen 689e241ff8 Merge branch 'master' of github.com:zig-lang/zig 2018-03-08 10:29:43 +01:00
Jimmi Holst Christensen 51b2f1b80b Translate C can now translate switch statements again 2018-03-08 10:29:29 +01:00
Andrew Kelley 790aaeacae add compile error for using @tagName on extern union
closes #742
2018-03-07 14:35:48 -05:00
Jimmi Holst Christensen bb80daf509 Ast Render no longer outputs erroneous semicolon
closes #813
2018-03-07 10:39:32 +01:00
Andrew Kelley d96dd5bc32 fix missing compile error for returning error from void async function
closes #799
2018-03-06 21:44:27 -05:00
Andrew Kelley eff3530dfa var is no longer a pseudo-type, it is syntax
closes #779
2018-03-06 18:31:31 -05:00
Andrew Kelley 44ae891bd7 fix assertion when taking slice of zero-length array
closes #788
2018-03-06 17:19:45 -05:00
Andrew Kelley 5d5820029d fix broken tests from previous commit 2018-03-06 16:46:45 -05:00
Andrew Kelley 07e47c058c ptrCast builtin now gives an error for removing const qualifier
closes #384
2018-03-06 16:37:03 -05:00
Jimmi Holst Christensen 5ab25798e3 We now also use trans_to_bool_expr on bool not 2018-03-06 12:04:14 +01:00
Jimmi Holst Christensen bf47cf418a expr to bool is now it's own function.
* Now while and for loops work on ints and floats, like if statements
* This fixes the loop problem in #813
2018-03-06 11:57:51 +01:00
Andrew Kelley 101b7745c4 add optnone noinline to async functions
this works around LLVM optimization assertion failures.
https://bugs.llvm.org/show_bug.cgi?id=36578

closes #800
2018-03-02 13:40:03 -05:00
Andrew Kelley de5c0c9f40 Merge remote-tracking branch 'origin/master' into async 2018-03-01 20:47:35 -05:00
Andrew Kelley 6bade0b825 coroutines: add await early test case 2018-03-01 16:17:38 -05:00
Andrew Kelley 8a0e1d4c02 await keyword works 2018-03-01 15:46:35 -05:00
Andrew Kelley 253d988e7c implementation of await
but it has bugs
2018-03-01 03:28:13 -05:00
Andrew Kelley 834e992a7c add test for coroutine suspend with block 2018-02-28 22:26:26 -05:00
Andrew Kelley 8429d4ceac implement coroutine resume 2018-02-28 22:18:48 -05:00
Andrew Kelley 807a5e94e9 add atomicrmw builtin function 2018-02-28 21:19:51 -05:00
Andrew Kelley 36eadb569a run coroutine tests only in Debug mode
LLVM 5.0.1, 6.0.0, and trunk crash when attempting to optimize coroutine code.
So, Zig does not support ReleaseFast or ReleaseSafe for coroutines yet.
Luckily, Clang users are running into the same crashes, so folks from the LLVM
community are working on fixes. If we're really lucky they'll be fixed in 6.0.1.
Otherwise we can hope for 7.0.0.
2018-02-28 18:56:26 -05:00
Andrew Kelley 58dc2b719c better coroutine codegen, now passing first coro test
we have to use the Suspend block with llvm.coro.end to
return from the coro
2018-02-28 18:22:43 -05:00
Andrew Kelley 1b8a241f6f Merge branch 'fix795' of https://github.com/bnoordhuis/zig into bnoordhuis-fix795 2018-02-28 00:22:53 -05:00
Ben Noordhuis 90598b4631 fix assert on self-referencing function ptr field
The construct `struct S { f: fn(S) void }` is not legal because structs
are not copyable but it should not result in an ICE.

Fixes #795.
2018-02-28 00:56:00 +01:00
Ben Noordhuis 9aa65c0e8e allow implicit cast from &const to ?&const &const
Allow implicit casts from n-th degree const pointers to nullable const
pointers of degree n+1.  That is:

    fn f() void {
        const s = S {};
        const p = &s;
        g(p);   // Works.
        g(&p);  // So does this.
    }

    fn g(_: ?&const &const S) void {  // Nullable 2nd degree const ptr.
    }

Fixes #731 some more.
2018-02-26 19:56:26 +01:00
Ben Noordhuis f11b948019 allow implicit cast from `S` to `?&const S`
Allow implicit casts from container types to nullable const pointers to
said container type.  That is:

    fn f() void {
        const s = S {};
        g(s);   // Works.
        g(&s);  // So does this.
    }

    fn g(_: ?&const S) void {  // Nullable const pointer.
    }

Fixes #731.
2018-02-23 15:55:57 +01:00
Ben Noordhuis 0845cbe277 name types inside functions after variable
Before this commit:

    fn f() []const u8 {
        const S = struct {};
        return @typeName(S);  // "f()", unexpected.
    }

And now:

    fn f() []const u8 {
        const S = struct {};
        return @typeName(S);  // "S", expected.
    }

Fixes #675.
2018-02-22 19:54:02 +01:00
Andrew Kelley 72ca2b214d ability to slice an undefined pointer at compile time if the len is 0 2018-02-16 15:22:29 -05:00
Andrew Kelley cc26148ba7 fix compiler crash when struct contains...
ptr to another struct which contains original struct
2018-02-15 12:14:20 -05:00
Andrew Kelley 1c1c0691cc fix crash when doing comptime float rem comptime int
closes #776
2018-02-14 23:12:51 -05:00
Andrew Kelley 9fa35adbd4 fix sometimes not type checking function parameters
closes #774

regression introduced in cfb2c67692
2018-02-14 16:24:43 -05:00
Andrew Kelley 445b03384a introduce std.heap.ArenaAllocator and std.heap.DirectAllocator
* DirectAllocator does the underlying syscall for every allocation.
 * ArenaAllocator takes another allocator as an argument and
   allocates bytes up front, falling back to DirectAllocator with
   increasingly large allocation sizes, to avoid calling it too often.
   Then the entire arena can be freed at once.

The self hosted parser is updated to take advantage of ArenaAllocator
for the AST that it returns. This significantly reduces the complexity
of cleanup code.

docgen and build runner are updated to use the combination of
ArenaAllocator and DirectAllocator instead of IncrementingAllocator,
which is now deprecated in favor of FixedBufferAllocator combined
with DirectAllocator.

The C allocator calls aligned_alloc instead of malloc, in order to
respect the alignment parameter.

Added asserts in Allocator to ensure that implementors of the
interface return slices of the correct size.

Fixed a bug in Allocator when you call realloc to grow the allocation.
2018-02-12 02:14:44 -05:00
Andrew Kelley 46aa416c48 std.os and std.io API update
* move std.io.File to std.os.File
 * add `zig fmt` to self hosted compiler
 * introduce std.io.BufferedAtomicFile API
 * introduce std.os.AtomicFile API
 * add `std.os.default_file_mode`
 * change FileMode on posix from being a usize to a u32
 * add std.os.File.mode to return mode of an open file
 * std.os.copyFile copies the mode from the source file instead of
   using the default file mode for the dest file
 * move `std.os.line_sep` to `std.cstr.line_sep`
2018-02-10 21:02:24 -05:00
Andrew Kelley a2bd9f8912 std lib: modify allocator idiom
Before we accepted a nullable allocator for some stuff like
opening files. Now we require an allocator.

Use the mem.FixedBufferAllocator pattern if a bound on the amount
to allocate is known.

This also establishes the pattern that usually an allocator is the
first argument to a function (possibly after "self").

fix docs for std.cstr.addNullByte

self hosted compiler:
 * only build docs when explicitly asked to
 * clean up main
 * stub out zig fmt
2018-02-09 18:27:50 -05:00
Andrew Kelley e7bf8f3f04 fix compiler crash switching on global error with no else 2018-02-09 13:49:58 -05:00
Andrew Kelley 3919afcad2 fix crash with error peer type resolution
closes #765
2018-02-09 11:16:04 -05:00
Andrew Kelley 916d24cd21 add compile error tests for error sets 2018-02-08 23:44:21 -05:00
Andrew Kelley 4b16874f04 add test for comptime err to int with only 1 member of set 2018-02-08 22:44:15 -05:00