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TrailingCommaPostFormatProcessor: add case for empty comma owner

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#KT-34744
This commit is contained in:
Dmitry Gridin
2020-01-09 15:07:52 +07:00
parent b72da6c4fc
commit bbd92a11bc
1 changed files with 8 additions and 2 deletions
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idea/src/org/jetbrains/kotlin/idea/formatter/TrailingCommaPostFormatProcessor.kt
+8 -2
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@@ -16,6 +16,7 @@ import com.intellij.psi.codeStyle.CodeStyleManager
import com.intellij.psi.codeStyle.CodeStyleSettings
import com.intellij.psi.impl.source.codeStyle.PostFormatProcessor
import com.intellij.psi.impl.source.codeStyle.PostFormatProcessorHelper
import com.intellij.psi.tree.TokenSet
import org.jetbrains.kotlin.idea.util.isMultiline
import org.jetbrains.kotlin.idea.util.needTrailingComma
import org.jetbrains.kotlin.lexer.KtTokens
@@ -182,16 +183,21 @@ private fun correctComma(comma: PsiElement, factory: KtPsiFactory): Boolean {
}
}
private val RIGHT_BARRIERS = TokenSet.create(KtTokens.RBRACKET, KtTokens.RPAR, KtTokens.RBRACE, KtTokens.GT, KtTokens.ARROW)
private val LEFT_BARRIERS = TokenSet.create(KtTokens.LBRACKET, KtTokens.LPAR, KtTokens.LBRACE, KtTokens.LT)
private val PsiElement.lastCommaOwnerOrComma: PsiElement?
get() {
val lastChild = lastSignificantChild ?: return null
val withSelf = when (lastChild.safeAs<ASTNode>()?.elementType) {
KtTokens.COMMA -> return lastChild
KtTokens.RBRACKET, KtTokens.RPAR, KtTokens.RBRACE, KtTokens.GT, KtTokens.ARROW -> false
in RIGHT_BARRIERS -> false
else -> true
}
return lastChild.getPrevSiblingIgnoringWhitespaceAndComments(withSelf)
return lastChild.getPrevSiblingIgnoringWhitespaceAndComments(withSelf)?.takeIf {
it.safeAs<ASTNode>()?.elementType !in LEFT_BARRIERS
}
}
private val PsiElement.lastSignificantChild: PsiElement?