| Formatter2 - QualifiedName in Crossreference has spaces around delimiters - how to replace? [message #1816857] |
Fri, 08 November 2019 15:26  |
 Brandon Lewis
Messages: 268
Registered: May 2012 |
Senior Member |
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I don't want to say I'm at the last of my headaches with Formatter2, but I'm getting close.
I've put off getting proper formatting of my QualifiedNames used in cross references for a while now, but now I can't put it off any longer.
I have no idea why Xtext is inserting these spaces for this text. It does it whenever I programmatically generate a file from my model (it seems to serialize with the a whitespace formatter).
The grammar item in question is:
VLNV returns ecore::EString:
Name '.' Name '.' ID '.' NMTOKEN
;
'abstractionRef' ':' abstractionRef=[AbstractionDefinitionType|VLNV]
In my formatter code, I have retrieved the region for my feature. "region" here being an NodeSemanticRegion. Sinc my content is inside a NodeSemanticRegion, every example on the net regarding surround, prepend, append etc wont' work, because I'm not dealing with a linked list of Hidden and Semantic Regions- it's inside this single SemanticRegion that I need to alter the text.
If I examine the region.text, I see in the debugger, my qualified name written like this:
So there are single white spaces between each QualifiedName delimiter. FWIW, my QualifiedNameConvertor is formatting the strings correctly as I can confirm with Content Assist (and when I use my QualifiedNames from Content Assist - everything works!)
I've spent at least 2 (now 4) hours trying to eliminate those spaces and I can't figure it out. Hardly any of the API for region have any comment or text whatsoever.
Something like region.createWhiteSpaceReplacer seems like it would be a fit, but no docs.
This also seems like it's trivially basic to anyone who knows what they are doing - clearly not myself.
I've tried:
val keywords = regionFor.keywords(".")
for (keyword : keywords) {
keyword.surround[highPriority; noSpace]
}
But on this region, there are no '.' keywords returned.
I can't seem to replace region.text .replace(" ", "") either. Doesn't seem theres a setText api to region.
Lost. Totally lost. Over white space surround a period.
[Updated on: Fri, 08 November 2019 15:40] Report message to a moderator |
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| Re: Formatter2 - QualifiedName in Crossreference has spaces around delimiters - how to replace? [message #1816861 is a reply to message #1816857] |
Fri, 08 November 2019 16:15  |
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i am not aware of a direct way to achieve this, but you can do something like (the same as you would do for terminals)
class MyDslFormatter extends AbstractFormatter2 {
@Inject extension MyDslGrammarAccess
def dispatch void format(Model model, extension IFormattableDocument document) {
for (g : model.greetings) {
g.format
}
for (r : model.refs) {
r.format
}
}
def dispatch void format(Greeting g, extension IFormattableDocument document) {
document.addReplacer(new AbstractTextReplacer(document, g.regionFor.assignment(greetingAccess.nameAssignment_1)) {
override createReplacements(ITextReplacerContext context) {
context.addReplacement(region.replaceWith(region.text.replaceAll("\\s+", "")))
return context
}
})
}
def dispatch void format(Ref r, extension IFormattableDocument document) {
document.addReplacer(new AbstractTextReplacer(document, r.regionFor.assignment(refAccess.refAssignment_1)) {
override createReplacements(ITextReplacerContext context) {
context.addReplacement(region.replaceWith(region.text.replaceAll("\\s+", "")))
return context
}
})
}
}
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de
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