computeCodeFragmentMappings(file, mainFirFile, firResolveSession, configuration)
        }

        val compilationPeerData = CompilationPeerCollector.process(mainFirFile)

        val filesToCompile = buildList {
            val dependencyFiles = buildSet {
                addAll(compilationPeerData.files)
                addAll(codeFragmentMappings?.capturedFiles.orEmpty())

            }
        }
    }

    class NestedType(val root: PossiblyInnerType, val nested: List<PossiblyInnerType>) {
        val allInnerTypes: List<PossiblyInnerType>
            get() = buildList {
                add(root)
                addAll(nested)
            }
    }

    override val typeContext = KaFe10TypeSystemCommonBackendContextForTypeMapping(resolveSession)

                    }
                }
            }
        }
    }

    private
    fun formatFailuresInLanguageTree(failures: List<SingleFailureResult>): List<String> = buildList {
        failures.forEach { failure ->
            when (failure) {
                is UnsupportedConstruct -> add(formatUnsupportedConstruct(failure))
                is ParsingError -> add(formatParsingError(failure))

            ?: errorWithAttachment("Cannot find enclosing declaration for ${nameExpression::class}") {
                withPsiEntry("fakeNameExpression", nameExpression)
            }

        return buildList {
            addAll(towerDataContext.implicitReceiverStack)
            for (towerDataElement in towerDataContext.towerDataElements) {
                addAll(towerDataElement.contextReceiverGroup.orEmpty())
            }

        } finally {
            state.destroy()
        }
    }

    private fun computeErrors(diagnostics: Diagnostics, allowedErrorFilter: (KaDiagnostic) -> Boolean): List<KaDiagnostic> {
        return buildList {
            for (diagnostic in diagnostics.all()) {
                if (diagnostic.severity == Severity.ERROR) {
                    val ktDiagnostic = KaFe10Diagnostic(diagnostic, token)

        builder: KaSymbolByFirBuilder,
    ): Pair<Collection<KaAnnotationValue>, KtElement?> {
        var representativePsi: KtElement? = null
        val flattenedVarargs = buildList {
            for (expr in this@convertVarargsExpression) {
                val converted = expr.convertConstantExpression(builder) ?: continue

    }.also { nodeMapping[it] = blockElement }


    private
    fun mapBlockElementErrors(failingResult: FailingResult): Collection<DocumentError> {
        return buildList {
            fun visit(result: FailingResult) {
                when (result) {
                    is MultipleFailuresResult -> result.failures.forEach(::visit)

internal fun <T> interleave(
  a: Iterable<T>,
  b: Iterable<T>,
): List<T> {
  val ia = a.iterator()
  val ib = b.iterator()

  return buildList {
    while (ia.hasNext() || ib.hasNext()) {
      if (ia.hasNext()) {
        add(ia.next())
      }
      if (ib.hasNext()) {
        add(ib.next())
      }
    }
  }
}

            // Identity equals are not supposed to be resolved the same way.
            FirOperation.EQ, FirOperation.NOT_EQ -> {}
            else -> return emptyList()
        }

        return buildList {
            expression.processEqualsFunctions(session, analysisSession) {
                add(it.buildSymbol(symbolBuilder))
            }
        }
    }

        val directiveToIgnoreSymbolRestore = directives.doNotCheckSymbolRestoreDirective()
        val directiveToIgnoreNonPsiSymbolRestore = directives.doNotCheckNonPsiSymbolRestoreDirective()

        val prettyRenderer = buildList {
            addIfNotNull(defaultRendererOption)
            addAll(directives[PRETTY_RENDERER_OPTION])
        }.fold(defaultRenderer) { acc, prettyRenderingMode ->
            prettyRenderingMode.transformation(acc)