Performance warning: LineMarker is supposed to be registered for leaf elements only

已回答

创建于 2021年04月09日 06:49

I get a warning

eInsight.daemon.LineMarkerInfo - Performance warning: LineMarker is supposed to be registered for leaf elements only, but got: XmlTag:

in the code, I even pass XmlAttribute not XmlTag

if (element !is XmlTag) return
val usages = mutableListOf<XmlAttribute>()
//... fill usages
val subIcon = NavigationGutterIconBuilder.create(AllIcons.Actions.FindForward)
    .setTargets(usages)
result.add(subIcon.createLineMarkerInfo(element))

tried to pass element.navigationElement and usages as navigationElement too, doesn't help still shows performance warning

3 条评论

Yann Cebron

创建于 2021年04月13日 10:50

See https://plugins.jetbrains.com/docs/intellij/line-marker-provider.html#best-practices-for-implementing-line-marker-providers

Yann Cebron

创建于 2021年04月13日 12:37

That is just the sample for PsiMethod->PsiIdentifier in this given case. The assertion message clearly states what is expected, a leaf node.

See org.jetbrains.idea.devkit.references.DevKitRelatedPropertiesProvider#collectNavigationMarkers for sample working

Sargo Tar

创建于 2021年04月13日 15:51

Thanks, helped,

if (element !is XmlToken) return
val tag = element.parent
if (tag !is XmlTag) return // check XmlTokenType
val usages = mutableListOf<XmlAttribute>()
//... fill usages
val subIcon = NavigationGutterIconBuilder.create(AllIcons.Actions.FindForward)
    .setTargets(usages)
result.add(subIcon.createLineMarkerInfo(element))

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