buffer: refactor to remove some duplicated code in fromObject. #4948

entertainyou · 2016-01-29T10:19:36Z

No description provided.

mscdex · 2016-01-29T11:10:12Z

lib/buffer.js

+    throw new TypeError('Must start with number, buffer, array or string');
+  }
+
+  function fromArrayLike(obj) {


I wonder if it might be beneficial (performance-wise) to move this function out of fromObject() since it does not depend on any outside variables.

entertainyou · 2016-01-31T06:44:05Z

updated pull request, @mscdex

mscdex · 2016-01-31T06:50:22Z

CI: https://ci.nodejs.org/job/node-test-pull-request/1454/

entertainyou · 2016-02-01T04:03:14Z

Ping, how to make this PR go forward?

mscdex · 2016-02-01T05:38:05Z

/cc @trevnorris

thefourtheye · 2016-02-01T06:06:51Z

lib/buffer.js

+  if (Array.isArray(obj)) {
+    return fromArrayLike(obj);
+  }
+
  if (obj instanceof ArrayBuffer) {


If we do this check first, we can skip the isArray check and let the if block below this, take care of the creation.

updated, @thefourtheye .

thefourtheye · 2016-02-01T08:49:06Z

lib/buffer.js

@@ -135,40 +142,28 @@ function fromObject(obj) {
  }

  if (Array.isArray(obj)) {


Even this is not necessary now

…Object.

entertainyou · 2016-02-01T08:55:28Z

updated according to your comments, @thefourtheye

thefourtheye · 2016-02-01T09:04:12Z

lib/buffer.js

@@ -151,30 +150,20 @@ function fromObject(obj) {
  }

  if (obj.buffer instanceof ArrayBuffer || obj.length) {


My bad. We are missing a corner case here. If the length of the array is zero we will throw an error. Perhaps we can change this to 'length' in obj.

Not sure about performance impact though. That said, if our tests didn't catch this case, may I ask you to update the test with empty array case?

Not very familiar with node/js internal, but I think the in operator should not be very slow compare to Array.isArray?

PR updated according to your comments

…in fromObject.

thefourtheye · 2016-02-01T09:20:18Z

test/parallel/test-buffer.js

@@ -28,6 +28,10 @@ var c = new Buffer(512);
 console.log('c.length == %d', c.length);
 assert.strictEqual(512, c.length);

+var d = new Buffer([]);
+console.log('d.length == %d', d.length);


Normally we don't expect successful tests to print anything. Can you remove this?

the tc above also prints, should I remove all log statement in this test-buffer.js?

That falls outside the scope of this PR :) So I would suggest removing only this.

thefourtheye · 2016-02-01T09:22:20Z

Okay. LGTM with a nit. But I defer it to @trevnorris to call the shot ;-)

…d code in fromObject.

jasnell · 2016-02-01T17:30:37Z

LGTM

trevnorris · 2016-02-01T20:55:35Z

lib/buffer.js

+    if (typeof obj.length !== 'number' || obj.length !== obj.length) {
+      return allocate(0);
+    } else {
+      return fromArrayLike(obj);


just an aside, all typed arrays could be more quickly handled in C++, but that doesn't concern this PR. at least now it's centralized and will be easier to make the change. :)

trevnorris · 2016-02-01T20:59:40Z

One request to add a test, but LGTM.

…plicated code in fromObject.

jasnell · 2016-02-02T16:56:22Z

CI: https://ci.nodejs.org/job/node-test-pull-request/1508/

entertainyou · 2016-02-03T17:32:43Z

@jasnell it's this pr Ready To merge ? I'm new here.

jasnell · 2016-02-03T17:38:05Z

@trevnorris ... can you give it one last look over? LGTM

Add fromArrayLike() to handle logic of copying in values from array-like argument. PR-URL: #4948 Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trevor Norris <[email protected]>

trevnorris · 2016-02-05T00:03:57Z

Landed in c0bfac6 with added commit message body and removed unnecessary else due to return in previous if. Thanks much!

Add fromArrayLike() to handle logic of copying in values from array-like argument. PR-URL: #4948 Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trevor Norris <[email protected]>

MylesBorins · 2016-03-10T21:52:06Z

is this something we would like to backport?

trevnorris · 2016-03-10T22:22:13Z

Not necessary but also is low/no risk. Though it may make tracking future changes easier.

jasnell · 2016-03-11T02:17:25Z

SGTM for LTS

Add fromArrayLike() to handle logic of copying in values from array-like argument. PR-URL: #4948 Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trevor Norris <[email protected]>

Add fromArrayLike() to handle logic of copying in values from array-like argument. PR-URL: nodejs#4948 Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trevor Norris <[email protected]>

Refs: nodejs#19275 (comment)

PR-URL: #19279 Refs: #19275 (comment) Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]>

PR-URL: nodejs#19279 Refs: nodejs#19275 (comment) Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]>

Refs: #19275 (comment)

buffer: refactor to remove some duplicated code in fromObject.

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mscdex added the buffer Issues and PRs related to the buffer subsystem. label Jan 29, 2016

mscdex reviewed Jan 29, 2016
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fixup! buffer: refactor to remove some duplicated code in fromObject.

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thefourtheye reviewed Feb 1, 2016
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fixup! buffer: refactor to remove some duplicated code in fromObject.

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thefourtheye reviewed Feb 1, 2016
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lib/buffer.js

@@ -135,40 +142,28 @@ function fromObject(obj) {

}

if (Array.isArray(obj)) {

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Even this is not necessary now

entertainyou added 2 commits February 1, 2016 16:52

fixup! buffer: refactor to remove some duplicated code in fromObject.

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fixup! fixup! buffer: refactor to remove some duplicated code in from…

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…Object.

thefourtheye reviewed Feb 1, 2016
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fixup! fixup! fixup! buffer: refactor to remove some duplicated code …

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…in fromObject.

thefourtheye reviewed Feb 1, 2016
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fixup! fixup! fixup! fixup! buffer: refactor to remove some duplicate…

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…d code in fromObject.

trevnorris reviewed Feb 1, 2016
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fixup! fixup! fixup! fixup! fixup! buffer: refactor to remove some du…

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…plicated code in fromObject.

trevnorris closed this Feb 5, 2016

rvagg mentioned this pull request Feb 8, 2016

Release proposal: v5.5.1 (Stable) #5141

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MylesBorins mentioned this pull request Mar 10, 2016

Audit commits not found on v4.x #5647

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MylesBorins added the lts-watch-v4.x label Mar 10, 2016

MylesBorins added land-on-v4.x and removed lts-watch-v4.x labels Mar 17, 2016

ryzokuken mentioned this pull request Mar 6, 2018

test: rename regression tests with descriptive file names #19161

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ryzokuken mentioned this pull request Mar 10, 2018

test: rename regression tests with descriptive file names (pt. 3) #19275

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ryzokuken referenced this pull request in ryzokuken/node Mar 11, 2018

test: delete test/parallel/test-regress-GH-4948

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Refs: nodejs#19275 (comment)

targos mentioned this pull request Mar 18, 2018

v9.9.0 proposal #19428

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BethGriggs referenced this pull request Oct 16, 2018

test: delete test/parallel/test-regress-GH-4948

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Refs: #19275 (comment)

BethGriggs mentioned this pull request Oct 30, 2018

v8.13.0 proposal #23974

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beevelop mentioned this pull request Nov 20, 2018

2018-11-20 Version 8.13.0 'Carbon' (LTS) @MylesBorins prepared by @BethGriggs beevelop/docker-android-nodejs#250

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buffer: refactor to remove some duplicated code in fromObject. #4948

buffer: refactor to remove some duplicated code in fromObject. #4948

entertainyou commented Jan 29, 2016

mscdex Jan 29, 2016

entertainyou commented Jan 31, 2016

mscdex commented Jan 31, 2016

entertainyou commented Feb 1, 2016

mscdex commented Feb 1, 2016

thefourtheye Feb 1, 2016

entertainyou Feb 1, 2016

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entertainyou commented Feb 1, 2016

thefourtheye Feb 1, 2016

thefourtheye Feb 1, 2016

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entertainyou Feb 1, 2016

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thefourtheye commented Feb 1, 2016

jasnell commented Feb 1, 2016

trevnorris Feb 1, 2016

trevnorris commented Feb 1, 2016

jasnell commented Feb 2, 2016

entertainyou commented Feb 3, 2016

jasnell commented Feb 3, 2016

trevnorris commented Feb 5, 2016

MylesBorins commented Mar 10, 2016

trevnorris commented Mar 10, 2016

jasnell commented Mar 11, 2016

		@@ -135,40 +142,28 @@ function fromObject(obj) {
		}

		if (Array.isArray(obj)) {

		@@ -151,30 +150,20 @@ function fromObject(obj) {
		}

		if (obj.buffer instanceof ArrayBuffer \|\| obj.length) {

buffer: refactor to remove some duplicated code in fromObject. #4948

buffer: refactor to remove some duplicated code in fromObject. #4948

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jasnell commented Mar 11, 2016