kotlin: isNullable

isNullable.kt

inline fun <reified T> query(content: String, query: String): T {
        try {
            val expression: Expression<JsonNode> = compile(query = query)
            val resultNode: JsonNode = search(content = content, expression = expression)

            val converted: T = converter.convertValue(resultNode)
            val isNullable: Boolean = null is T
            if (converted == null && !isNullable) {
                error("Failed to convert to (non-nullable) instance of ${T::class} from $resultNode .")
            }
            return converted
        } catch (all: Throwable) {
            error("JQ Failed! query: $query - reason: ${all.message} ")
        }
    }