else -> null
                }
            }
            is FirLiteralExpression -> {
                fir.adaptToConstKind()
            }
            is FirFunctionCall -> {
                evaluateFunctionCall(fir)
            }
            is FirStringConcatenationCall -> {
                evaluateStringConcatenationCall(fir)
            }
            is FirNamedReference -> {