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ListRewrite removes whitespace [message #1011931]

Wed, 20 February 2013 09:32

Eclipse User

I'm implementing a shortcut for toggling the final modifier.

Where a final modifier is present I remove it by using a ListRewrite

    ASTRewrite rewrite = ASTRewrite.create(ast);
    ListRewrite listRewrite = rewrite.getListRewrite(declaration, declaration.getModifiersProperty());
    ....
    listRewrite.remove(finalModifier);

However when there are modifiers or annotation on the previous line I get unwanted removal of the carriage return.

E.g.

	@Override
	final void myMethod() {

	}

becomes

	@Override void myMethod() {

	}

Is there a way to preserve the white space or ensure that formatting rules are applied to the list of modifiers?

Thanks,
Tas

Re: ListRewrite removes whitespace [message #1012498 is a reply to message #1011931]

Thu, 21 February 2013 12:05

Eclipse User

I thought I might have found the solution when I came across setTargetSourceRangeComputer(..) on ASTRewrite. I thought that maybe the whitespace was being considered part of the final modifier's AST node. However when I passed my own implementation I noticed that a correct length of 5 was already being used.

I've taken a look at the text edits return by the rewrite and I get the following
{MultiTextEdit} [53,8] [undefined]
{DeleteEdit} [53,3]
{DeleteEdit} [56,5]

It seems that ASTRewrite has distinctly determined that the whitespace also needs to be deleted ([56,5] is 'final').

I'll dig into ASTRewrite to see if I can understand why it does this. In the meantime if anyone has any suggestions they'd be very welcome.

Thanks,
Tas

Re: ListRewrite removes whitespace [message #1016645 is a reply to message #1012498]

Thu, 07 March 2013 04:08

Eclipse User

I've not been able to find a suitable way around this and I'm thinking it's a bug in the ASTRewrite which means that formatting rules are not being applied properly for modifiers.

Are there any JDT developers on this group that can confirm this before I go opening a bug?

Thanks,
Tas

Re: ListRewrite removes whitespace [message #1016793 is a reply to message #1016645]

Thu, 07 March 2013 12:24

Eclipse User

which formatter rule do you see violated by this rewrite?
Specifically, what are your settings in the New Lines > Annotations setting of your formatter profile?

Re: ListRewrite removes whitespace [message #1017033 is a reply to message #1016793]

Fri, 08 March 2013 12:15

Eclipse User

I've been using the built-in default for testing. Under annotations this has insert new life after everything except parameters.

If I have the following

	@Override
	protected void myMethod() {
	}

and use ASTRewrite to remove the visibility modifier I get this:

	@Override void myMethod() {
	}

If I then run Source->Format I get

	@Override
	void myMethod() {
	}

[Updated on: Fri, 08 March 2013 12:16] by Moderator

Re: ListRewrite removes whitespace [message #1018788 is a reply to message #1017033]

Thu, 14 March 2013 09:25

Eclipse User

Sounding like a bug? Anyone?

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