When generating functions in `FirDeclarationGenera...

# compiler

[Zac Sweers]

When generating functions in FirDeclarationGenerationExtension.generateFunctions, should we be setting source to null or something in particular? The default KtFakeSourceElementKind.PluginGenerated appears to break the IDE's analysis unexpectedly when trying to load a generated function generated with createMemberFunction

org.jetbrains.kotlin.utils.exceptions.KotlinIllegalArgumentExceptionWithAttachments: Cannot compute containing PSI for unknown source kind 'org.jetbrains.kotlin.KtFakeSourceElementKind$PluginGenerated@707c6fc4' (KtClass)
	at org.jetbrains.kotlin.analysis.api.fir.components.KaFirSymbolRelationProvider.getContainingPsi(KaFirSymbolRelationProvider.kt:535)
	at org.jetbrains.kotlin.analysis.api.fir.components.KaFirSymbolRelationProvider.getContainingDeclarationByPsi(KaFirSymbolRelationProvider.kt:191)
	at org.jetbrains.kotlin.analysis.api.fir.components.KaFirSymbolRelationProvider.getContainingDeclaration(KaFirSymbolRelationProvider.kt:140)
	at org.jetbrains.kotlin.analysis.api.fir.components.KaFirSymbolRelationProvider.getContainingSymbol(KaFirSymbolRelationProvider.kt:72)
	at org.jetbrains.kotlin.analysis.api.impl.base.KaBaseSession.getContainingSymbol(KaBaseSession.kt)

[dmitriy.novozhilov]

null seems to be a safe option

[Zac Sweers]

actually it looks like there's no way to overwrite this after it's created and SimpleFunctionBuildingContext doesn't offer an API to set it. Should I file a FR?

[dmitriy.novozhilov]

Please do

[Zac Sweers]

KT-74640