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This commit is non-breaking.
std.io is deprecated in favor of std.Io, in preparation for that
namespace becoming an interface.
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added adapter to AnyWriter and GenericWriter to help bridge the gap
between old and new API
make std.testing.expectFmt work at compile-time
std.fmt no longer has a dependency on std.unicode. Formatted printing
was never properly unicode-aware. Now it no longer pretends to be.
Breakage/deprecations:
* std.fs.File.reader -> std.fs.File.deprecatedReader
* std.fs.File.writer -> std.fs.File.deprecatedWriter
* std.io.GenericReader -> std.io.Reader
* std.io.GenericWriter -> std.io.Writer
* std.io.AnyReader -> std.io.Reader
* std.io.AnyWriter -> std.io.Writer
* std.fmt.format -> std.fmt.deprecatedFormat
* std.fmt.fmtSliceEscapeLower -> std.ascii.hexEscape
* std.fmt.fmtSliceEscapeUpper -> std.ascii.hexEscape
* std.fmt.fmtSliceHexLower -> {x}
* std.fmt.fmtSliceHexUpper -> {X}
* std.fmt.fmtIntSizeDec -> {B}
* std.fmt.fmtIntSizeBin -> {Bi}
* std.fmt.fmtDuration -> {D}
* std.fmt.fmtDurationSigned -> {D}
* {} -> {f} when there is a format method
* format method signature
- anytype -> *std.io.Writer
- inferred error set -> error{WriteFailed}
- options -> (deleted)
* std.fmt.Formatted
- now takes context type explicitly
- no fmt string
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preparing to rearrange std.io namespace into an interface
how to upgrade:
std.io.getStdIn() -> std.fs.File.stdin()
std.io.getStdOut() -> std.fs.File.stdout()
std.io.getStdErr() -> std.fs.File.stderr()
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strings"
This reverts commit c8fa767f083e610840cef688b709783c5ad66acc.
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closes #17483
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This commit changes how `std.io.poll` is implemented on Windows. The new
implementation unfortunately incurs a little extra system call overhead,
but fixes several bugs in the old implementation:
* The `lpNumberOfBytesRead` parameter of `ReadFile` was used with
overlapped I/O. This is explicitly disallowed by the documentation, as
the value written to this pointer is "potentially erroneous"; instead,
`GetOverlappedResult` must always be used, even if the operation
immediately returns. Documentation states that `lpNumberOfBytesRead`
cannot be passed as null on Windows 7, so for compatibility, the
parameter is passed as a pointer to a dummy global.
* If the initial `ReadFile` returned data, and the next read returned
`BROKEN_PIPE`, the received data was silently ignored in the sense
that `pollWindows` did not `return`, instead waiting for data to come
in on another file (or for all files to close).
* The asynchronous `ReadFile` calls which were left pending between
calls to `pollWindows` pointed to a potentially unstable buffer, since
the user of `poll` may use part of the `LinearFifo` API which rotate
its ring buffer. This race condition was causing CI failures in some
uses of the compiler server protocol.
These issues are all resolved. Now, `pollWindows` will queue an initial
read to a small (128-byte) stable buffer per file. When this read is
completed, reads directly into the FIFO's writable slice are performed
until one is left pending, at which point that read is cancelled (with a
check to see if it was completed between the `ReadFile` and `CancelIo`
calls) and the next read into the small stable buffer is queued. These
small buffer reads are the ones left pending between `pollWindows`
calls, avoiding the race condition described above.
Related: #21565
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The compiler actually doesn't need any functional changes for this: Sema
does reification based on the tag indices of `std.builtin.Type` already!
So, no zig1.wasm update is necessary.
This change is necessary to disallow name clashes between fields and
decls on a type, which is a prerequisite of #9938.
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This is in preparation for incremental and actually being able to debug
executables built by the x86_64 backend.
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Instead of calling the dynamically loaded kernel32.GetLastError, we can extract it from the TEB.
As shown by [Wine](https://github.com/wine-mirror/wine/blob/34b1606019982b71818780bc84b76460f650af31/include/winternl.h#L439), the last error lives at offset 0x34 of the TEB in 32-bit Windows and at offset 0x68 in 64-bit Windows.
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fixes #17408
Helpful reviewers/testers include Joshe Wolfe, Auguste Rame, Andrew
Kelley and Jacob Young.
Co-authored-by: Joel Gustafson <joelg@mit.edu>
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This allows `std.Uri.resolve_inplace` to properly preserve the fact
that `new` is already escaped but `base` may not be. I originally tried
just moving `raw_uri` around, but it made uri resolution unmanagably
complicated, so I instead added per-component information to `Uri` which
allows extra allocations to be avoided when constructing uris with
components from different sources, and in some cases, deferring the work
all the way to when the uri is printed, where an allocator may not even
be needed.
Closes #19587
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Now these show up as "example usage" in generated documentation.
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Introduced in #19032 as a fix for #18967.
Not needed any more after #19253.
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closes #5019
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See #16114. This functionality should be added to bufferedReader
instead.
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BufferedTee provides reader interface to the consumer. Data read by consumer
is also written to the output. Output is hold lookahead_size bytes behind
consumer. Allowing consumer to put back some bytes to be read again. On flush
all consumed bytes are flushed to the output.
input -> tee -> consumer
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output
input - underlying unbuffered reader
output - writer, receives data read by consumer
consumer - uses provided reader interface
If lookahead_size is zero output always has same bytes as consumer.
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std: make options a struct instance instead of a namespace
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This is a companion to #17344 to apply the same change to the
`std.io.Writer` interface.
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These changes can be reverted the next time stage1 is updated.
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Use inline to vastly simplify the exposed API. This allows a
comptime-known endian parameter to be propogated, making extra functions
for a specific endianness completely unnecessary.
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add error.EndOfStream to readEnum() and isBytes() so that users can
catch these errors. this also prevents them from panicing with
'invalid error value' on EndOfStream.
test both methods.
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The idea here is to avoid code bloat by having only one actual io.Reader
implementation, which is type erased, and then implement a GenericReader
that preserves type information on top of that as thin glue code.
The strategy here is for that glue code to `@errSetCast` the result of
the type-erased reader functions, however, while trying to do that I
ran into #17343.
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Most of this migration was performed automatically with `zig fmt`. There
were a few exceptions which I had to manually fix:
* `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten
* `@truncate`'s fixup is incorrect for vectors
* Test cases are not formatted, and their error locations change
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Signed-off-by: Eric Joldasov <bratishkaerik@getgoogleoff.me>
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0.9)
Followup to 902df103c6151c257c90de9ba5f29f7f4b9dbea2.
Signed-off-by: Eric Joldasov <bratishkaerik@getgoogleoff.me>
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Also get rid of the TTY wrapper struct, which was exlusively used as a
namespace - this is done by the tty.zig root struct now.
detectTTYConfig has been renamed to just detectConfig, which is enough
given the new namespace. Additionally, a doc comment had been added.
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These seem to work great now.
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I think having inputs is problematic here, it should only be for
outputs.
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This allows setting a custom buffer size. In this case I wanted it
because using a buffer size large enough to fit a TLS ciphertext record
elides a memcpy().
This commit also adds `readAtLeast` to the Reader interface.
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* make image base target dependent
* fix relocs to imports
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* The `@bitCast` workaround is removed in favor of `@ptrCast` properly
doing element casting for slice element types. This required an
enhancement both to stage1 and stage2.
* stage1 incorrectly accepts `.{}` instead of `{}`. stage2 code that
abused this is fixed.
* Make some parameters comptime to support functions in switch
expressions (as opposed to making them function pointers).
* Avoid relying on local temporaries being mutable.
* Workarounds for when stage1 and stage2 disagree on function pointer
types.
* Workaround recursive formatting bug with a `@panic("TODO")`.
* Remove unreachable `else` prongs for some inferred error sets.
All in effort towards #89.
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