Is and isExcludingLatin did not handle negative runes when dispatching
to is16. TestNegativeRune covers this along with the existing uint32
casts in IsGraphic, etc. (For tests, I picked the smallest non-Latin-1
code point in each range.)
Updates #43254
Change-Id: I17261b91f0d2b5b5125d19219411b45c480df74f
Reviewed-on: https://go-review.googlesource.com/c/go/+/280493
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Document the way EncodeRune currently handles runes which are
out of range. Also add an example showing that behaviour.
Change-Id: I0f8e7645ae053474ec319085a2bb6d7f73bc137c
Reviewed-on: https://go-review.googlesource.com/c/go/+/255998
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Trust: Giovanni Bajo <rasky@develer.com>
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Go Bot <gobot@golang.org>
BenchmarkFullASCIIRune tests the performance of function utf8.FullRune,
which will be inlined in BenchmarkFullASCIIRune. Since the return value
of FullRune is not referenced, it will be removed as dead code.
This CL makes the FullRune functions return value referenced by a global
variable to avoid this point. In addition, this CL adds one more benchmark
to cover more code paths, and puts them together as sub benchmarks of
BenchmarkFullRune.
Change-Id: I6e79f4c087adf70e351498a4b58d7482dcd1ec4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/233979
Run-TryBot: eric fang <eric.fang@arm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This does not include an upgrade of golang.org/x/net.
This is optional and best done as a separate CL.
Change-Id: Ifecc3fb6e3b7fe026b4ddefbe637186a3445b0bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/204658
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This does *not* update the vendored tables.
A commit updating these tables should follow soon,
Mostly generated running UNICODE_VERSION=11.0.0 in x/text.
Manually updated next.txt file.
Updates golang/go#27945.
Change-Id: I939a01e235aeca898ee9afc99a531e7ad8444e12
Reviewed-on: https://go-review.googlesource.com/c/go/+/154420
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
The compiler couldn't quite see that reading p[2] and p[3] was safe.
This change provides a few hints to help it.
First, make sz an int throughout, rather than just when checking the input length.
Second, use <= instead of == in later comparisons.
name old time/op new time/op delta
DecodeASCIIRune-8 2.62ns ± 3% 2.60ns ± 5% ~ (p=0.126 n=18+19)
DecodeJapaneseRune-8 4.46ns ±10% 4.01ns ± 5% -10.00% (p=0.000 n=19+20)
Change-Id: I2f78a17e38156fbf8b0f5dd6c07c20d6a47e9209
Reviewed-on: https://go-review.googlesource.com/c/go/+/173662
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
We were using hex literals and had the binary literal in a comment.
When I was working with this code, I always referred to the comment.
That's an indicator that we should just use the binary literal directly.
Updates #19308
Change-Id: I2279cb8efb4ae5f2e1558c15979058ab09eb4f6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/173663
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The changes in Unicode 11 exposes a bug in maketables.go.
We update the Unicode 10 tables using a new generator
to minimize the changes upgrading to Unicode 11.
This change switches over the generation from core to that in
x/text. To properly update the tables one needs to run the generate
in x/text anyway, so this makes that official.
The RangeTable generator in x/text also generates slightly compacter
tables.
Updates golang/go#27945
See CL 154443
Change-Id: I6c59e082d5b8cd9e9332a32d8971061228581d66
Reviewed-on: https://go-review.googlesource.com/c/go/+/169617
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The comments on the category range tables in the unicode package are fairly
redundent and require an external source to translate into human readable
category names.
This adds a look up table with the category descriptions and uses it if
available when generating the comments for the range tables.
Fixes#28954
Change-Id: I853e2d270def6492c2c1dd2ad0ec761a74c04e5d
Reviewed-on: https://go-review.googlesource.com/c/151297
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
If SpecialCase contains an explicit CaseRange with zero deltas,
respect those and don't fall back to the default behavior.
Fixes#25636
Change-Id: Ic554c6b3dd462b1b39c75194eec469b6ff4aa55b
Reviewed-on: https://go-review.googlesource.com/117155
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
Each URL was manually verified to ensure it did not serve up incorrect
content.
Change-Id: I4dc846227af95a73ee9a3074d0c379ff0fa955df
Reviewed-on: https://go-review.googlesource.com/115798
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This reverts commit 08f19bbde1.
Reason for revert:
The changed transformation takes effect on a larger set
of code snippets than expected.
For example, this:
func foo() {
// Comment
bar()
}
becomes:
func foo() {
// Comment
bar()
}
This is an unintended consequence.
Change-Id: Ifca88d6267dab8a8170791f7205124712bf8ace8
Reviewed-on: https://go-review.googlesource.com/81335
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Joe Tsai <joetsai@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
To improve readability when exported fields are removed,
forbid the printer from emitting an empty line before the first comment
in a const, var, or type block.
Also, when printing the "Has filtered or unexported fields." message,
add an empty line before it to separate the message from the struct
or interfact contents.
Before the change:
<<<
type NamedArg struct {
// Name is the name of the parameter placeholder.
//
// If empty, the ordinal position in the argument list will be
// used.
//
// Name must omit any symbol prefix.
Name string
// Value is the value of the parameter.
// It may be assigned the same value types as the query
// arguments.
Value interface{}
// contains filtered or unexported fields
}
>>>
After the change:
<<<
type NamedArg struct {
// Name is the name of the parameter placeholder.
//
// If empty, the ordinal position in the argument list will be
// used.
//
// Name must omit any symbol prefix.
Name string
// Value is the value of the parameter.
// It may be assigned the same value types as the query
// arguments.
Value interface{}
// contains filtered or unexported fields
}
>>>
Fixes#18264
Change-Id: I9fe17ca39cf92fcdfea55064bd2eaa784ce48c88
Reviewed-on: https://go-review.googlesource.com/71990
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Also includes all derived values as well as
vendored packages.
Generated by running
UNICODE_VERSION=10.0.0 go generate
in golang.org/x/text
and modified by hand to add the tests and
entries in next.txt for new script and properties.
Closes Issue #21471
Change-Id: I1d10ee3887bd1fd3d5a756ee0d04bd6ec2814ba1
Reviewed-on: https://go-review.googlesource.com/63953
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
strings.IndexByte was introduced in go1.2 and it can be used
effectively wherever the second argument to strings.Index is
exactly one byte long.
This avoids generating unnecessary string symbols and saves
a few calls to strings.Index.
Change-Id: I1ab5edb7c4ee9058084cfa57cbcc267c2597e793
Reviewed-on: https://go-review.googlesource.com/65930
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Do the low-hanging fruit - tiny Less functions that are used exactly
once. This reduces the amount of code and puts the logic in a single
place.
Change-Id: I9d4544cd68de5a95e55019bdad1fca0a1dbfae9c
Reviewed-on: https://go-review.googlesource.com/63171
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This, in turn, to make it work with x/text’s
go generate.
Also eliminates need to manually update version
string in maketables.go.
Change-Id: Id5a8b8e27bdce5b1b5920eb9223a2d27b889149a
Reviewed-on: https://go-review.googlesource.com/63952
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
Avoid division in common case. There are 5438 ranges in unicode/tables.go
4110 of them have stride 1.
Stride 1 case got significantly faster. Other stride is a bit slower.
Measured by
import (
"testing"
"unicode"
)
func BenchmarkDiv1(b *testing.B) {
rtb := &unicode.RangeTable{
R16: []unicode.Range16{
{0xa800, 0xdfff, 1}, // or 3
},
}
for i := 0; i < b.N; i++ {
unicode.Is(rtb, rune(0xc700))
}
}
Div1-6 15.6ns ± 1% 9.9ns ± 1% -36.54% (p=0.000 n=10+10)
Div3-6 15.5ns ± 1% 16.1ns ± 1% +3.67% (p=0.000 n=10+10)
Helps a bit with xml parsing from issue #21823
XMLsax-6 30.9s ± 0% 29.6s ± 0% -4.15% (p=0.000 n=10+9)
Change-Id: Ibac1a91d7b9474d0c134b0add83e56caa62daa20
Reviewed-on: https://go-review.googlesource.com/63390
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Done with grep & interactive search & replace, to double-check
replacements. Not many remained after CL 20022.
Fixes#18572
Change-Id: Idbe90ba3b584f9b9661d2bbd141607daaadfa41a
Reviewed-on: https://go-review.googlesource.com/45270
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Re-writing the switch statement as a single boolean expression
reduces the number of branches that the compiler generates.
It is also arguably easier to read as a pair of numeric ranges
that valid runes can exist in.
No test changes since the existing test does a good job of
testing all of the boundaries.
This change was to gain back some performance after a correctness
fix done in http://golang.org/cl/32123.
The correctness fix (CL/32123) slowed down the benchmarks slightly:
benchmark old ns/op new ns/op delta
BenchmarkIndexRune/10-4 19.3 21.6 +11.92%
BenchmarkIndexRune/32-4 33.6 35.2 +4.76%
Since the fix relies on utf8.ValidRune, this CL improves benchmarks:
benchmark old ns/op new ns/op delta
BenchmarkIndexRune/10-4 21.6 20.0 -7.41%
BenchmarkIndexRune/32-4 35.2 33.5 -4.83%
Change-Id: Ib1ca10a2e29c90e879a8ef9b7221c33e85d015d8
Reviewed-on: https://go-review.googlesource.com/32122
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Copies utf8 constants and EncodeRune implementation from unicode/utf8.
Adds a new decoderune implementation that is used by the compiler
in code generated for ranging over strings. It does not handle
ASCII runes since these are handled directly before calls to decoderune.
The DecodeRuneInString implementation from unicode/utf8 is not used
since it uses a lookup table that would increase the use of cpu caches.
Adds more tests that check decoding of valid and invalid utf8 sequences.
name old time/op new time/op delta
RuneIterate/range2/ASCII-4 7.45ns ± 2% 7.45ns ± 1% ~ (p=0.634 n=16+16)
RuneIterate/range2/Japanese-4 53.5ns ± 1% 49.2ns ± 2% -8.03% (p=0.000 n=20+20)
RuneIterate/range2/MixedLength-4 46.3ns ± 1% 41.0ns ± 2% -11.57% (p=0.000 n=20+20)
new:
"".decoderune t=1 size=423 args=0x28 locals=0x0
old:
"".charntorune t=1 size=666 args=0x28 locals=0x0
Change-Id: I1df1fdb385bb9ea5e5e71b8818ea2bf5ce62de52
Reviewed-on: https://go-review.googlesource.com/28490
Run-TryBot: Martin Möhrmann <martisch@uos.de>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Functions like ToLower and ToUpper return the invalid rune back,
so we might as well do the same here.
I changed my mind about panicking when I tried to document the behavior.
Fixes#16690 (again).
Change-Id: If1c68bfcd66daea160fd19948e7672b0e1add106
Reviewed-on: https://go-review.googlesource.com/30935
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Changes beyond generated tables:
- Now supports aliases to handle deprecated
property classes.
- Some Mongolian letters are now modifiers.
Other changes:
- strconv: newly generated table to be in sync
- regexp/syntax: updated maxFold
Fixes#16191
Change-Id: I56bdf21ee2f775f2a82d0465b3772faf5c24cb61
Reviewed-on: https://go-review.googlesource.com/24496
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
cmd and runtime were handled separately, and I'm intentionally skipped
syscall. This is the rest of the standard library.
CL generated mechanically with github.com/mdempsky/unconvert.
Change-Id: I9e0eff886974dedc37adb93f602064b83e469122
Reviewed-on: https://go-review.googlesource.com/22104
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The tree's pretty inconsistent about single space vs double space
after a period in documentation. Make it consistently a single space,
per earlier decisions. This means contributors won't be confused by
misleading precedence.
This CL doesn't use go/doc to parse. It only addresses // comments.
It was generated with:
$ perl -i -npe 's,^(\s*// .+[a-z]\.) +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.) +([A-Z])')
$ go test go/doc -update
Change-Id: Iccdb99c37c797ef1f804a94b22ba5ee4b500c4f7
Reviewed-on: https://go-review.googlesource.com/20022
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dave Day <djd@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This is a subset of https://golang.org/cl/20022 with only the copyright
header lines, so the next CL will be smaller and more reviewable.
Go policy has been single space after periods in comments for some time.
The copyright header template at:
https://golang.org/doc/contribute.html#copyright
also uses a single space.
Make them all consistent.
Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0
Reviewed-on: https://go-review.googlesource.com/20111
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Check that it now properly handles \xC0 and \xC1.
Fixes#11733.
Change-Id: I66cfe0d43f9d123d4c4509a3fa18b9b6380dfc39
Reviewed-on: https://go-review.googlesource.com/17225
Reviewed-by: Russ Cox <rsc@golang.org>
Cover some functions that weren't benched before and add InString
variants if the underlying implementation is different.
Note: compare (Valid|RuneCount)InString* to their (Valid|RuneCount)*
counterparts. It shows, somewhat unexpectedly, that ranging over
a string is *much* slower than using calls to DecodeRune.
Results:
In order to avoid a discrepancy in measuring the performance
of core we could leave the names of the string-based measurements
unchanged and suffix the added alternatives with Bytes.
Compared to old:
BenchmarkRuneCountTenASCIIChars-8 44.3 12.4 -72.01%
BenchmarkRuneCountTenJapaneseChars-8 167 67.1 -59.82%
BenchmarkEncodeASCIIRune-8 3.37 3.44 +2.08%
BenchmarkEncodeJapaneseRune-8 7.19 7.24 +0.70%
BenchmarkDecodeASCIIRune-8 5.41 5.53 +2.22%
BenchmarkDecodeJapaneseRune-8 8.17 8.41 +2.94%
All benchmarks:
BenchmarkRuneCountTenASCIIChars-8 100000000 12.4 ns/op
BenchmarkRuneCountTenJapaneseChars-8 20000000 67.1 ns/op
BenchmarkRuneCountInStringTenASCIIChars-8 30000000 44.5 ns/op
BenchmarkRuneCountInStringTenJapaneseChars-8 10000000 165 ns/op
BenchmarkValidTenASCIIChars-8 100000000 12.5 ns/op
BenchmarkValidTenJapaneseChars-8 20000000 71.1 ns/op
BenchmarkValidStringTenASCIIChars-8 30000000 50.0 ns/op
BenchmarkValidStringTenJapaneseChars-8 10000000 161 ns/op
BenchmarkEncodeASCIIRune-8 500000000 3.44 ns/op
BenchmarkEncodeJapaneseRune-8 200000000 7.24 ns/op
BenchmarkDecodeASCIIRune-8 300000000 5.53 ns/op
BenchmarkDecodeJapaneseRune-8 200000000 8.41 ns/op
BenchmarkFullASCIIRune-8 500000000 3.91 ns/op
BenchmarkFullJapaneseRune-8 300000000 4.22 ns/op
Change-Id: I674d2ee4917b975a37717bbfa1082cc84dcd275e
Reviewed-on: https://go-review.googlesource.com/14431
Reviewed-by: Russ Cox <rsc@golang.org>
All of Go passes. No changes for the text repo.
Fixes#10153
Change-Id: I313369bf471c8974390a6d42075e5c54f6a81750
Reviewed-on: https://go-review.googlesource.com/13667
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
David Benjamin
Ainar Garipov
eric fang
Marcel van Lohuizen
Martin Möhrmann
Tim Cooper
Serhat Giydiren
Josh Bleecher Snyder
Wil Selwood
Brad Fitzpatrick
Joe Tsai
Joe Tsai
Marvin Stenger
Daniel Martí
Ilya Tocar
Russ Cox
Martin Möhrmann
Hiroshi Ioka
Egon Elbre
Matthew Dempsky
Alberto Donizetti
Carlos Cirello
Aaron Jacobs