Commit Graph

189 Commits

Author SHA1 Message Date
Rob Pike d3d8852d89 text/template: use reflect.Value.FieldByIndexErr
to avoid a crash on a nil pointer as an embedded field.

Fixes #48215

Change-Id: I214faa6e3cf08cdec1c01035e4bbca0900c6a408
Reviewed-on: https://go-review.googlesource.com/c/go/+/357963
Trust: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-29 02:12:05 +00:00
Cuong Manh Le 283d8a3d53 all: use reflect.{Pointer,PointerTo}
Updates #47651
Updates #48665

Change-Id: I69a87b45a5cad7a07fbd855040cd9935cf874554
Reviewed-on: https://go-review.googlesource.com/c/go/+/358454
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2021-10-26 14:24:17 +00:00
Gusted 267abbe3ba html/template: remove unused `mode` field on `Tree` struct
This changes Go, to remove this unused field on the `Tree` struct. Which seems to replaced by the non-private field `Mode`.

Change-Id: I5b384424cf60aa0af36eb8aad1d8db3f99b9838e
GitHub-Last-Rev: 4b033f967b
GitHub-Pull-Request: golang/go#48028
Reviewed-on: https://go-review.googlesource.com/c/go/+/345789
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-10-18 20:39:22 +00:00
Russ Cox 4d8db00641 all: use bytes.Cut, strings.Cut
Many uses of Index/IndexByte/IndexRune/Split/SplitN
can be written more clearly using the new Cut functions.
Do that. Also rewrite to other functions if that's clearer.

For #46336.

Change-Id: I68d024716ace41a57a8bf74455c62279bde0f448
Reviewed-on: https://go-review.googlesource.com/c/go/+/351711
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-06 15:53:04 +00:00
Ian Lance Taylor 8444a545e3 text/template: only unwrap final and/or value
In the last CL I missed the fact that except for the final value the
code already unwraps the argument.

For #31103

Change-Id: Ic9099aeb50c6b3322fc14a90ac8026c1d8cb1698
Reviewed-on: https://go-review.googlesource.com/c/go/+/354091
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-10-05 21:22:16 +00:00
Ian Lance Taylor c129af90eb text/template: undo reflect.Value wrapping for short-circuit and/or
For #31103

Change-Id: I9c0aa64f95f564de31a4c178e3930584d41316bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/353610
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-10-01 23:51:16 +00:00
Ian Lance Taylor 82ac9ab83a text/template: check final value for short-circuit and/or
There was a bug in the short-circuit code for and/or added in CL 321490:
it ignored the value passed in by an earlier pipeline.

For #31103

Change-Id: Ic31f4d7cedfe563ef968cbb712ecfb2413c42eb5
Reviewed-on: https://go-review.googlesource.com/c/go/+/353130
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-09-29 18:38:00 +00:00
Russ Cox d0dd26a88c html/template, text/template: implement break and continue for range loops
Break and continue for range loops was accepted as a proposal in June 2017.
It was implemented in CL 66410 (Oct 2017)
but then rolled back in CL 92155 (Feb 2018)
because html/template changes had not been implemented.

This CL reimplements break and continue in text/template
and then adds support for them in html/template as well.

Fixes #20531.

Change-Id: I05330482a976f1c078b4b49c2287bd9031bb7616
Reviewed-on: https://go-review.googlesource.com/c/go/+/321491
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-09-23 02:52:10 +00:00
Russ Cox 7d67f8d435 text/template: implement short-circuit and, or
Making the builtin and and or functions use short-circuit
evaluation was accepted as a proposal in April 2019,
but we never got around to implementing it. Do that.

Fixes #31103.

Change-Id: Ia43d4a9a6b0ab814f2dd3471ebaca3e7bb1505cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/321490
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-09-21 14:02:52 +00:00
Ian Lance Taylor ba1c52d7d7 text/template: initialize template before locking it
For #39807
Fixes #48436

Change-Id: I75f82fd8738dd2f11f0c69b1230e1be1abc36024
Reviewed-on: https://go-review.googlesource.com/c/go/+/350730
Trust: Ian Lance Taylor <iant@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2021-09-20 23:00:47 +00:00
mehradsadeghi 650fc2117a text/scanner: use Go convention in Position doc comment
Change-Id: Ib872f139af7bfb0a75cc21dace5358fe8fcf2cf0
GitHub-Last-Rev: 8fd5ab01fa
GitHub-Pull-Request: golang/go#47250
Reviewed-on: https://go-review.googlesource.com/c/go/+/335149
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Robert Griesemer <gri@golang.org>
2021-07-18 21:00:03 +00:00
Russ Cox d2fd503f68 text/template: fix type bug in eq
{{eq .x 0}} where .x is a nil interface{} should be false, not a type error.

Similarly, {{eq .x .x}} should succeed, not panic in reflect.

Fixes #45982.

Change-Id: I90aba82bb2f1a9e162bde1290c94f5028f56f412
Reviewed-on: https://go-review.googlesource.com/c/go/+/317470
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-05-06 13:39:39 +00:00
Russ Cox 0e7a7a68cd text/template/parse: rename DeferFuncCheck to SkipFuncCheck
The proposal as accepted in #34652 named the bit SkipFuncCheck.
It was renamed to DeferFuncCheck during the code review on a suggestion by Rob,
along with a comment to “defer type checking functions until template is executed,”
but this description is not accurate: the package has never type-checked functions,
only verified their existence. And the effect of the bit in this package is to eliminate
this check entirely, not to defer it to some later time.

I was writing code using this new bit and was very confused about when the
"type checking" was being deferred to and how to stop that entirely,
since in my use case I wanted no checks at all. What I wanted is what the bit does,
it just wasn't named accurately.

Rename back to SkipFuncCheck.

Change-Id: I8e62099c8a904ed04521eb5b86155290f6d5b12f
Reviewed-on: https://go-review.googlesource.com/c/go/+/317269
Trust: Russ Cox <rsc@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2021-05-06 13:39:37 +00:00
Ian Lance Taylor 496d7c6914 text/template: add lock for Template.tmpl to fix data race
This adds a new lock protecting "tmpl".

This is a copy of https://golang.org/cl/257817 by Andreas Fleig,
updated for current tip, and updated to start running the
html/template TestEscapeRace test.

Thanks to @bep for providing the test case.

Fixes #39807

Change-Id: Ic8874484290283a49116812eeaffb8608346dc70
Reviewed-on: https://go-review.googlesource.com/c/go/+/316669
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2021-05-04 00:03:39 +00:00
Ariel Mashraki 5780ab4f60 text/template/parse: add a mode to skip func-check on parsing
Following the discussion on #34652 and the proposal of #36911 (gopls),
this CL adds an option to skip the function declartion check on parsing,
in order to make it possible to parse arbitrary template text files and
get their AST.

Fixed #38627

Change-Id: Id1e0360fc726b49dcdd49716ce25563ebaae6c10
Reviewed-on: https://go-review.googlesource.com/c/go/+/301493
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Ian Lance Taylor <iant@golang.org>
2021-04-19 16:49:40 +00:00
Manlio Perillo c27991bf5b text/template: replace os.MkdirTemp with T.TempDir
Updates #45402

Change-Id: I9d55191c4021387b771550b5c93c91806f694aa6
Reviewed-on: https://go-review.googlesource.com/c/go/+/309351
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-12 21:58:25 +00:00
Adrien Delorme d4247f5167 text/template: wrap errors returned by template functions instead of stringifying them
Fixes #34201

Change-Id: Ic2e2967e4b01167345cf38bd006cabb206a64377
GitHub-Last-Rev: 5d0c485655
GitHub-Pull-Request: golang/go#42398
Reviewed-on: https://go-review.googlesource.com/c/go/+/267838
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Pontus Leitzler <leitzler@gmail.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Go Bot <gobot@golang.org>
2021-03-05 18:00:44 +00:00
Joe Tsai b83d073e9e reflect: add Method.IsExported and StructField.IsExported methods
The IsExported method is a more intuitive helper for checking whether
the method or field is exported than checking whether PkgPath is empty.

In the same CL, modify the standard library to make use of this helper.

Fixes #41563

Change-Id: Iaacfb3b74449501f98e2707aa32095a32bd3c3c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/266197
Trust: Joe Tsai <joetsai@digital-static.net>
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-02-25 21:21:51 +00:00
Meng Zhuo 3298300ddf text/template: error on range over send channel
template range require channel contains RecvDir
if recv on send only channel will raise an panic.

Fixes #43065

Change-Id: Ie0ea70ce60e074bf8c9f2378e07ef1d4c41dc38f
Reviewed-on: https://go-review.googlesource.com/c/go/+/276532
Trust: Meng Zhuo <mzh@golangcn.org>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-12-15 13:59:00 +00:00
Russ Cox 4f1b0a44cb all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp
As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-09 19:12:23 +00:00
Russ Cox 1b09d43067 all: update references to symbols moved from io/ioutil to io
The old ioutil references are still valid, but update our code
to reflect best practices and get used to the new locations.

Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.
Also excluded vendored code.

For #41190.

Change-Id: I6d86f2bf7bc37a9d904b6cee3fe0c7af6d94d5b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/263142
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 18:41:18 +00:00
Russ Cox 2a9aa4dcac html/template, text/template: add ParseFS
Now templates can be parsed not just from operating system files
but from arbitrary file systems, including zip files.

For #41190.

Change-Id: I2172001388ddb1f13defa6c5e644e8ec8703ee80
Reviewed-on: https://go-review.googlesource.com/c/go/+/243938
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 18:41:14 +00:00
Russ Cox 9384d34c58 text/template: allow newlines inside action delimiters
This allows multiline constructs like:

	{{"hello" |
	  printf}}

Now that unclosed actions can span multiple lines,
track and report the start of the action when reporting errors.

Also clean up a few "unexpected <error message>" to be just "<error message>".

Fixes #29770.

Change-Id: I54c6c016029a8328b7902a4b6d85eab713ec3285
Reviewed-on: https://go-review.googlesource.com/c/go/+/254257
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-12 16:30:36 +00:00
Ariel Mashraki c8ea03828b text/template: add CommentNode to template parse tree
Fixes #34652

Change-Id: Icf6e3eda593fed826736f34f95a9d66f5450cc98
Reviewed-on: https://go-review.googlesource.com/c/go/+/229398
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-08-28 21:45:12 +00:00
Russ Cox efbe47b162 html/template: add tests from text/template
Copy and adapt tests from text/template, to exercise more of html/template's copy.

Various differences in behavior are flagged with NOTE comments or t.Skip
and documented in #40075. Many of them are probably bugs.
One clarifying test case added to both text/template and html/template.

No changes to the package itself.

Change-Id: Ifefad83d647db846040d24c2741a0244b00ade82
Reviewed-on: https://go-review.googlesource.com/c/go/+/241084
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-07-14 16:54:25 +00:00
Macks 968e18eebd text/template: fix lint typo in VariableNode doc
Change-Id: I68b8c782478aa3e7adbd36a2de1c20b04e8c395b
GitHub-Last-Rev: 50f2719783
GitHub-Pull-Request: golang/go#39622
Reviewed-on: https://go-review.googlesource.com/c/go/+/239383
Reviewed-by: Rob Pike <r@golang.org>
2020-06-23 00:10:24 +00:00
Bryan C. Mills 9f4aeb36e2 all: use a hermetic "go" tool in standard-library tests
The go/build package uses the "go" tool from the user's environment,
but its tests should not assume that that tool is in any particular
state, let alone appropriate for running the test.

Instead, explicitly use testenv.GoTool, adding it to $PATH in a
TestMain when necessary.

Fixes #39199
Fixes #39198

Change-Id: I56618a55ced473e75dd96eeb3a8f7084e2e64d02
Reviewed-on: https://go-review.googlesource.com/c/go/+/234880
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
2020-05-21 21:17:48 +00:00
empijei d4d298040d html/template,text/template: switch to Unicode escapes for JSON compatibility
The existing implementation is not compatible with JSON
escape as it uses hex escaping.
Unicode escape, instead, is valid for both JSON and JS.
This fix avoids creating a separate escaping context for
scripts of type "application/ld+json" and it is more
future-proof in case more JSON+JS contexts get added
to the platform (e.g. import maps).

Fixes #33671
Fixes #37634

Change-Id: Id6f6524b4abc52e81d9d744d46bbe5bf2e081543
Reviewed-on: https://go-review.googlesource.com/c/go/+/226097
Reviewed-by: Carl Johnson <me@carlmjohnson.net>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-04-16 17:13:33 +00:00
Brad Fitzpatrick 435b9dd1a1 text/template: avoid a global map to help the linker's deadcode elimination
Fixes #36021
Updates #2559
Updates #26775

Change-Id: I2e6708691311035b63866f25d5b4b3977a118290
Reviewed-on: https://go-review.googlesource.com/c/go/+/210284
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-04-15 15:30:46 +00:00
Daniel Martí 218f4572f5 text/template: make reflect.Value indirections more robust
Always shadow or modify the original parameter name. With code like:

	func index(item reflect.Value, ... {
		v := indirectInterface(item)

It was possible to incorrectly use 'item' and 'v' later in the function,
which could result in subtle bugs. This is precisely the kind of mistake
that led to #36199.

Instead, don't keep both the old and new reflect.Value variables in
scope. Always shadow or modify the original variable.

While at it, simplify the signature of 'length', to receive a
reflect.Value directly and save a few redundant lines.

Change-Id: I01416636a9d49f81246d28b91aca6413b1ba1aa5
Reviewed-on: https://go-review.googlesource.com/c/go/+/212117
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Roberto Clapis <robclap8@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
2020-02-24 09:16:18 +00:00
Ariel Mashraki 8d7be1e3c9 text/template/parse: remove redundant return
Change the `itemChar` clause to be like all other clauses
that don't return a different state function than the default.

Change-Id: I56c863a7d699c1264b24b42ef23138ec47eaacd8
Reviewed-on: https://go-review.googlesource.com/c/go/+/216117
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-01-23 23:07:10 +00:00
Daniel Martí 5481a97ab0 text/template: indirect interfaces before slicing
The recently added slice function used indirectInterface, but then
forgot to actually call reflect.Value.Slice on its result. Calling the
Slice method on the original Value without indirectInterface would
result in a panic, if our slice was indeed behind an interface.

Fix that, and add test cases for all three built-in functions that work
with slices.

Fixes #36199.

Change-Id: I9a18f4f604a3b29967eefeb573f8960000936b88
Reviewed-on: https://go-review.googlesource.com/c/go/+/211877
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2019-12-19 13:52:09 +00:00
Oliver Powell ba4593ac47 text/template: remove an incorrect comment and clarify docs for AddParseTree
The comment "If the name is the name of this template, overwrite this template."
is incorrect and should be "is not" instead. This comment is no longer
required once the docs are updated to mention this behaviour instead.

Fixes #34695

Change-Id: I773495b2194d7bb7619b13c1a28cbc76e8f69aac
Reviewed-on: https://go-review.googlesource.com/c/go/+/199139
Reviewed-by: Rob Pike <r@golang.org>
2019-12-17 11:10:58 +00:00
Roberto Clapis 94e9a5e19b text/template: harden JSEscape to also escape ampersand and equal
Ampersand and equal are not dangerous in a JS/JSString context
but they might cause issues if interpolated in HTML attributes.

This change makes it harder to introduce XSS by misusing
escaping.

Thanks to t1ddl3r <t1ddl3r@gmail.com> for reporting this common
misuse scenario.

Fixes #35665

Change-Id: Ice6416477bba4cb2ba2fe2cfdc20e027957255c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/207637
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Mike Samuel <mikesamuel@gmail.com>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2019-11-21 22:20:17 +00:00
Rob Pike b8cb75fb17 text/template: add error check for parenthesized first argument in pipeline
An error check was missing: If the first argument of a pipeline is
parenthesized, and the pipeline has further arguments, then
syntactically the pipeline is a function invocation and there must
be a "call". Tricky rare corner case, but easily caught.

Add the error check and some tests to verify behavior.

Fixes #31810.

Change-Id: Ica80b7c11284e4ea9e8cc94a01dbbc9a67e42079
Reviewed-on: https://go-review.googlesource.com/c/go/+/206124
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-11-12 05:06:42 +00:00
Ariel Mashraki debbb1e78d text/template/parse: speed up nodes printing
This CL is a follow up for 198080.
Added a private writeTo method to the Node interface,
in order to use the same builder for printing all nodes
in the tree. Benchmark output against master:

benchmark                     old ns/op     new ns/op     delta
BenchmarkParseLarge-8         24594994      25292054      +2.83%
BenchmarkVariableString-8     117           118           +0.85%
BenchmarkListString-8         10475         3353          -67.99%

benchmark                     old allocs     new allocs     delta
BenchmarkVariableString-8     3              3              +0.00%
BenchmarkListString-8         149            31             -79.19%

benchmark                     old bytes     new bytes     delta
BenchmarkVariableString-8     72            72            +0.00%
BenchmarkListString-8         5698          1608          -71.78%

Change-Id: I2b1cf07cda65c1b80083fb99671289423700feba
Reviewed-on: https://go-review.googlesource.com/c/go/+/198278
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-03 00:16:28 +00:00
Ariel Mashraki 93a79bbcc0 text/template/parse: remove duplication in peekNonSpace
nextNonSpace has an identical code except the call to
backup at the end.

Change-Id: Iefa5b13950007da38323a800fb6b0ce3d436254b
Reviewed-on: https://go-review.googlesource.com/c/go/+/198277
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2019-10-01 20:30:37 +00:00
Ariel Mashraki 86cd6c2ee5 text/template/parse: use strings.Builder in Chain and List nodes
This CL is a continuation of 198078. Benchmark output:

benchmark                     old ns/op     new ns/op     delta
BenchmarkParseLarge-8         24759165      24516563      -0.98%
BenchmarkVariableString-8     115           115           +0.00%
BenchmarkListString-8         924           680           -26.41%

benchmark                     old allocs     new allocs     delta
BenchmarkVariableString-8     3              3              +0.00%
BenchmarkListString-8         14             13             -7.14%

benchmark                     old bytes     new bytes     delta
BenchmarkVariableString-8     72            72            +0.00%
BenchmarkListString-8         512           424           -17.19%

Change-Id: I9ec48fe4832437c556a5fa94d4cbf6e29e28d944
Reviewed-on: https://go-review.googlesource.com/c/go/+/198080
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-01 19:03:51 +00:00
Ariel Mashraki 4f13a9c5b1 text/template/parse: use strings.Builder in String methods
As mentioned in godoc, strings.Builder is more efficient for
concatenating and building strings.
Running a simple bench test on VariableNode.String() gives:

benchmark                     old ns/op     new ns/op     delta
BenchmarkParseLarge-8         25676831      24453285      -4.77%
BenchmarkVariableString-8     296           115           -61.15%

benchmark                     old allocs     new allocs     delta
BenchmarkVariableString-8     8              3              -62.50%

benchmark                     old bytes     new bytes     delta
BenchmarkVariableString-8     112           72            -35.71%

Change-Id: I13c9340080738fcad1edeed859d33ba608e4b05a
Reviewed-on: https://go-review.googlesource.com/c/go/+/198078
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-01 07:16:47 +00:00
Rob Pike 27cf81e1b4 text/template: further simplify building the vars list
Followup to https://golang.org/cl/197997

If you know the number of elements, you don't need append at all.
Either use append to grow, or allocate and index. Here we choose
number 2.

Change-Id: Ic58637231789640ff7b293ece04a95a8de7ccf8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/198097
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-10-01 00:00:02 +00:00
Pantelis Sampaziotis f91c850be6 text/template/parse: specify slice capacity in Pipenode.CopyPipe()
The required vars slice capacity is known so it can be specified before appending.

Change-Id: Ifa2fe97602e84198c4d01e5a1b0529f3f65f2df1
GitHub-Last-Rev: a0580df208
GitHub-Pull-Request: golang/go#34613
Reviewed-on: https://go-review.googlesource.com/c/go/+/197997
Reviewed-by: Andrew Bonventre <andybons@golang.org>
2019-09-30 21:48:20 +00:00
Daniel Martí 0f7b4e72a0 text/template: don't evaluate '.' as a float64
When using a '.' constant literal as a reflect.Value variadic argument,
idealConstant would incorrectly result in a float64. This is because
rune literals can be represented as a float64, and contain a period,
which tricked the logic into thinking the literal must have been a
floating point number.

This also happened with other characters that can be part of a floating
point number, such as 'e' or 'P'.

To fix these edge cases, exit the case sooner if the literal was a rune,
since that should always go to the int case instead.

Finally, add test cases that verify that they behave properly. These
would error before, since eq would receive a mix of int and float64,
which aren't comparable.

Fixes #34483.

Change-Id: Icfcb7803bfa0cf317a1d1adacacad3d69a57eb42
Reviewed-on: https://go-review.googlesource.com/c/go/+/196808
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tom Payne <tom@airmap.com>
Reviewed-by: Rob Pike <r@golang.org>
2019-09-25 09:22:38 +00:00
Ariel Mashraki 95cbcc5c1c text/template: support all comparable types in eq
Extends the built-in eq function to support all Go
comparable types.

Fixes #33740

Change-Id: I522310e313e251c4dc6a013d33d7c2034fe2ec8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/193837
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2019-09-25 09:13:11 +00:00
Mihai Borobocea 8a8cf5bf6d text/template: refer to sorted map keys as "ordered" not "comparable" in docs
Consistent with the spec's definition of "ordered" and "comparable".

Fixes #34147

Change-Id: Id13186df5343588d80eaebfeb23092596a846d51
Reviewed-on: https://go-review.googlesource.com/c/go/+/193840
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2019-09-06 21:22:26 +00:00
tnclong 4a4f752c38 text/template: avoid allocating a new common in copy
Template.New calls t.init, which allocates several items that
are immediately rewritten by copy, so avoid the call to New

Change-Id: I16c7cb001bbcd14cf547c1a2db2734a2f8214e7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/182757
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2019-08-27 16:56:26 +00:00
Dong-hee Na 997086b7e6 text/template: replace bytes.Buffer with strings.Builder
After Go.1.10+ strings.Builder is known as more efficient in
concatenating and building strings than bytes.Buffer.

In this CL,
there is a minor logic fix for getting advantage of strings.builder.

name               old time/op    new time/op    delta
DefinedTemplate-8     543ns ± 3%     512ns ± 2%   -5.73%  (p=0.000 n=8+8)

name               old alloc/op   new alloc/op   delta
DefinedTemplate-8      192B ± 0%      160B ± 0%  -16.67%  (p=0.000 n=8+8)

name               old allocs/op  new allocs/op  delta
DefinedTemplate-8      5.00 ± 0%      5.00 ± 0%     ~     (all equal)

Change-Id: Icda0054d146e6c5e32ed8a4d13221bb6850d31b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/175261
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2019-08-27 16:54:06 +00:00
Robert Griesemer b97ec8e57f text/scanner: remove AllowDigitSeparator flag again
The scanner was changed to accept the new Go number literal syntax
of which separators are a part. Making them opt-in is inconsistent
with the rest of the changes. For comparison, the strconv package
also accepts the new number literals including separators with the
various conversion routines, if no explicit number base is given.

Updates #28493.

Change-Id: Ifaae2225a9565364610813658bfe692901dd3ccd
Reviewed-on: https://go-review.googlesource.com/c/go/+/184080
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2019-06-27 21:13:53 +00:00
Robert Griesemer bc81f52e93 text/scanner: rename AllowNumberbars to AllowDigitSeparators
Fixes #32661.

Change-Id: I32dc4e7b276b95ac2e87a384caa6c48702368d05
Reviewed-on: https://go-review.googlesource.com/c/go/+/183077
Reviewed-by: Andrew Bonventre <andybons@golang.org>
2019-06-20 18:06:38 +00:00
Andrew Gerrand 263db9b680 html/template, text/template: document glob semantics
This change updates the doc comments of the various ParseGlob functions
and methods to state that they use the semantics of filepath.Match when
matching the file name pattern.

Fixes #30608

Change-Id: Iee4bdc0a2a2f8647d1f9a910e4d72a5de9204d11
Reviewed-on: https://go-review.googlesource.com/c/go/+/179739
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2019-06-17 21:53:49 +00:00
Daniel Martí eb2fabf2fa text/template: clarify the safety of Template.New
In particular, the returned template isn't independent from the parent.
For example, it can't be parsed concurrently with other children
templates. Only methods which are explicitly safe for concurrent use,
like Execute, may be used concurrently.

Fixes #30281.

Change-Id: Idc84bf4199c035316cdb83b950fd4a8f2a71cd0c
Reviewed-on: https://go-review.googlesource.com/c/go/+/172297
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
2019-06-07 13:56:20 +00:00