New extension: Indentation based text objects #261

sharat87 · 2020-12-24T15:41:53Z

Hello team! Thank you for the amazing work on IdeaVim.

Indentation based text objects are something I've been missing quite a bit in IdeaVim and, learning that that extension is not already available, I made an implementation of this idea.

Original Vim extension of this idea: https://github.com/michaeljsmith/vim-indent-object.

I'm very new to IdeaVim's code base and I did just enough to get this feature working (since I needed it). In that context, majority of the code is copy-paste from the textobj-entire plugin. If there's anything you'd like to be changed to make it ready for merging, please let me know.

Also, I'm trying to add a test class to test this plugin, but the test fails for some weird reason I'm not able to comprehend yet. I could use some help there (if you guys are okay to merge this in now and do the test separately, I'm fine with that as well). This is probably due to my lack of knowledge in Kotlin though.

Again, thank you very much for your work and your time. I hope this extension will be available as part of IdeaVim in the future.

AlexPl292

Hey, glad to hear that you like the project :D
Thank you for your interest in IdeaVim. I even think that support for this plugin was already requested on some of YouTrack tickets. I've checked your code and the overall approach looks good to me. However, I've left some comments, could you please check them?
Regarding the falling test, I would actually prefer they'll be merged along with this PR. Could you maybe send them as well and I'll check why they don't work?

AlexPl292 · 2020-12-25T07:01:45Z

src/com/maddyhome/idea/vim/extension/textobjindent/VimIndentObject.java

+      TextRange getRange(@NotNull Editor editor, @NotNull Caret caret, @NotNull DataContext context,
+                         int count, int rawCount, @Nullable Argument argument) {
+        final int caretLineNum = caret.getCaretModel().getVisualPosition().getLine();
+        String content = editor.getDocument().getText();


Is it possible to operate on CharSequence instead of the string? IJ uses a custom implementation of the CharSequence to store the code and converting it to the String may be a heavy operation.

AlexPl292 · 2020-12-25T07:06:25Z

src/com/maddyhome/idea/vim/extension/textobjindent/VimIndentObject.java

+                         int count, int rawCount, @Nullable Argument argument) {
+        final int caretLineNum = caret.getCaretModel().getVisualPosition().getLine();
+        String content = editor.getDocument().getText();
+        String[] lines = content.split("\n");


Oh, I know that vim stores the text as a list of lines, so getting this "lines array" is a zero-weight operation for vim, but this might be heavy for IJ for long files :(
What do you think, would it be possible not to analyze the whole text, but kind of "go up from the caret until the indent is the same, then go down from the caret"?

AlexPl292 · 2020-12-25T07:12:19Z

src/com/maddyhome/idea/vim/extension/textobjindent/VimIndentObject.java

+        final int caretLineNum = caret.getCaretModel().getVisualPosition().getLine();
+        String content = editor.getDocument().getText();
+        String[] lines = content.split("\n");
+        String caretLine = lines[caretLineNum];


caretLineNum is a line taken from the visual position, but here you take the index for all lines. This may work incorrect if you'll have folded lines above your current line. I think there should be a logicalPosition for lines indexing (if you'll use this approach, see the comments above).

I think this post may explain the difference between the visual and logical positions in IJ: https://jetbrains.org/intellij/sdk/docs/tutorials/editor_basics/coordinates_system.html#caret-logical-position
In short, a logical position is a position in the text while a visual position is a position that is rendered for the user. If you have a 10 lines file and 3-6 lines are folded, this file has 10 logical lines, but 7 visual lines.

sharat87 · 2020-12-25T08:48:16Z

Thank you for the quick response @AlexPl292. This was an initial MVP implementation that I did in an evening. Now that I've confirmed your interest in this, I will invest more time in improving the implementation and adding tests. I'll get back to you folks after those changes.

AlexPl292 · 2020-12-29T07:40:56Z

JFI: https://youtrack.jetbrains.com/issue/VIM-1151

sharat87 · 2021-01-10T13:11:02Z

Hey @blaquezzz, thank you for approving this PR. However, I'd request you to hold up on merging this. I'm working on an implementation that works on characters as opposed to lines currently. Give me a couple of weeks more I should be able to spend some time again. (Life and holidays happened 😄)

# Conflicts: # resources/META-INF/includes/VimExtensions.xml

sharat87 · 2021-03-21T05:50:20Z

Hey @AlexPl292, sorry for the long delay on this. Had to prioritize other things. So, I've made an initial implementation that just works for now. I intend to refactor and make the code readable, but only after I have tests to ensure I don't break it during refactoring. But with the test class I've added (copy pasted from the textobj-entire plugin), the tests don't run. They fail in the setup phase when I enable the plugin. Can you advise what I'm missing to run the tests please?

Here's the error I'm seeing:

Stack trace:

java.lang.AssertionError
	at org.jetbrains.plugins.ideavim.JavaVimTestCase.enableExtensions(JavaVimTestCase.java:76)
	at org.jetbrains.plugins.ideavim.extension.textobjindent.VimIndentObjectTest.setUp(VimIndentObjectTest.kt:31)
	at com.intellij.testFramework.UsefulTestCase.invokeSetUp(UsefulTestCase.java:471)
	at com.intellij.testFramework.UsefulTestCase.defaultRunBare(UsefulTestCase.java:463)
	at com.intellij.testFramework.UsefulTestCase.lambda$runBare$11(UsefulTestCase.java:525)
	at com.intellij.testFramework.EdtTestUtil.lambda$runInEdtAndWait$1(EdtTestUtil.java:40)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:303)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:419)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Thanks!

AlexPl292 · 2021-04-28T07:37:32Z

Hi! I apologize for the delay, because of some reason I skipped the notifications. The problem with tests is bacause you have a different name in VimExternsions.xml file.

sharat87 · 2021-05-09T13:25:12Z

@AlexPl292 and others, I've added a few tests for scenarios I could think of. Please suggest/add more cases to this so we can get this to be even more robust.

Thanks!

# Conflicts: # resources/META-INF/includes/VimExtensions.xml

AlexPl292 · 2021-05-24T07:37:26Z

Hi! I think this extension is already pretty good. Thank you for your contribution! :D

momadacoding · 2021-06-09T02:12:15Z

@sharat87 I just tried this in EAP, and it behavior bugs.
When I use command vii in a python function, vim version of this plugin will only select the function body, but this version will select the whole class sadly 😞

sharat87 · 2021-06-09T06:02:28Z

@haolly woow, that shouldn't be happening. Could you open a new issue for this with minimal piece of code where vii fails as an example please? It'll help me reproduce quickly and get to a fix. Thanks! :)

PS: @AlexPl292, I'm hoping opening an issue for a plugin inside Ideavim against the Ideavim repo is okay 😄

momadacoding · 2021-06-10T06:28:36Z

class TestCls(object):
	VAR_NAME = "SomeThingMagic"

	def __init__(self):
		self.loadedCnt = 0
		self.StartOffset = None

@sharat87 Just use this code as a file to test

momadacoding · 2021-06-22T13:37:52Z

@sharat87 Do you have plan to fix this ?

sharat87 · 2021-06-22T14:23:53Z

Hey @haolly, I do intend to fix this, but haven't found the bandwidth recently. I'm hoping this weekend will be different.

koutselakismanos · 2021-07-22T17:50:52Z

Hey @sharat87 , thanks for the contribution, I have been missing this feature! I also found a bug in golang code.
Doing gcii in line 11


import (
	"time"
)

type Game struct {
	ID                 int
	Title              string
	ContainerImageName string
	CpuLimit           int
	MemoryLimit        int
	CreatedAt          time.Time
	UpdatedAt          time.Time
}

type GameVersion struct {
	ID      int
	GameID  int
	Version string
}

results in

//
//import (
//	"time"
//)
//
//type Game struct {
//	ID                 int
//	Title              string
//	ContainerImageName string
//	CpuLimit           int
//	MemoryLimit        int
//	CreatedAt          time.Time
//	UpdatedAt          time.Time
//}
//
//type GameVersion struct {
//	ID      int
//	GameID  int
//	Version string
//}

I tried setting different line seperators but with the same results. It works fine on my react project.

lourenci · 2022-01-05T07:39:51Z

The problem here with go lang. 😢

sharat87 added 2 commits December 24, 2020 20:59

Initial working implementation of indent objects

1e69e98

Fix handling when caret line has no indentation

82e39c9

AlexPl292 self-requested a review December 25, 2020 06:47

AlexPl292 reviewed Dec 25, 2020

View reviewed changes

AlexPl292 added the Waiting for updates label Dec 31, 2020

sharat87 added 5 commits March 21, 2021 09:59

Upper boundary functional

7cbeb82

Merge branch 'master' into extension/textobjindent

788495a

# Conflicts: # resources/META-INF/includes/VimExtensions.xml

Handle inner selection for upper boundary

182f671

Handle outer selection for lower boundary

28c01f0

Refactor implementation and test

c24cbcf

sharat87 requested a review from AlexPl292 April 7, 2021 09:20

sharat87 added 4 commits May 8, 2021 21:35

Fix name mismatch causing tests to not run

0edff46

Add test for basic tiny buffer, and fix it

d7ed33c

Added more tests and fixes for the tests

039b44b

More tests and fixes

444a48f

Merge branch 'master' into extension/textobjindent

92b0a3a

# Conflicts: # resources/META-INF/includes/VimExtensions.xml

AlexPl292 merged commit 86296e4 into JetBrains:master May 24, 2021

sharat87 deleted the extension/textobjindent branch May 24, 2021 08:20

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New extension: Indentation based text objects #261

New extension: Indentation based text objects #261

sharat87 commented Dec 24, 2020

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lourenci commented Jan 5, 2022

New extension: Indentation based text objects #261

New extension: Indentation based text objects #261

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