호출 클래스와 메소드 이름 출력

확장함수 info를 통해 호출 클래스명과 메소드명 출력

class PopcornPopper{
	fun on() {
        info()
    }
}

fun <T : Any> T.info(): T {
    val res = this
    Throwable().stackTrace[1].apply {
        println("${generateTag()} ${generateMessage(res)}")
    }
    return this
}

fun <T : Any> T.info(msg: () -> Any): T {
    Throwable().stackTrace[1].apply {
        println("${generateTag()} ${generateMessage(msg())}")
    }
    return this
}

fun StackTraceElement.generateTag() = className.substringAfterLast(".")
fun StackTraceElement.generateMessage(msg: Any = "") = "$methodName() Line $lineNumber: $msg"

fun main() {
    val test = PopcornPopper()
    test.on()
}

PopcornPopper info() Line 7: 테스트

 

 

출처

discuss.kotlinlang.org/t/currently-executing-method-name-and-line-number/3438/2

Currently executing method name and line number