1 /* 2 * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. 3 */ 4 5 package kotlinx.coroutines 6 7 public class Try<out T> private constructor(private val _value: Any?) { 8 private class Fail(val exception: Throwable) { toStringnull9 override fun toString(): String = "Failure[$exception]" 10 } 11 12 public companion object { 13 public operator fun <T> invoke(block: () -> T): Try<T> = 14 try { 15 Success(block()) 16 } catch(e: Throwable) { 17 Failure<T>(e) 18 } 19 public fun <T> Success(value: T) = Try<T>(value) 20 public fun <T> Failure(exception: Throwable) = Try<T>(Fail(exception)) 21 } 22 23 @Suppress("UNCHECKED_CAST") 24 public val value: T get() = if (_value is Fail) throw _value.exception else _value as T 25 26 public val exception: Throwable? get() = (_value as? Fail)?.exception 27 toStringnull28 override fun toString(): String = _value.toString() 29 } 30