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Домашнее задание Kotlin #6 #39

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d90566b
Задание 1
Sep 11, 2025
fddf8d5
Задание 2
Sep 11, 2025
7026abc
Задание 3.1
Sep 11, 2025
5224267
Задание 3.2
Sep 11, 2025
75927d2
Задание 3.3
Sep 11, 2025
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12 changes: 6 additions & 6 deletions src/main/kotlin/ru/otus/homework/homework/Coffee.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -22,30 +22,30 @@ class SimpleCoffee : Coffee {

class MilkDecorator(private val coffee: Coffee) : Coffee {
override fun cost(): Int {
TODO("Not yet implemented")
return coffee.cost() + 50
}

override fun description(): String {
TODO("Not yet implemented")
return coffee.description() + ", молоко"
}
}

class SugarDecorator(private val coffee: Coffee) : Coffee {
override fun cost(): Int {
TODO("Not yet implemented")
return coffee.cost() + 20
}

override fun description(): String {
TODO("Not yet implemented")
return coffee.description() + ", сахар"
}
}

class VanillaDecorator(private val coffee: Coffee) : Coffee {
override fun cost(): Int {
TODO("Not yet implemented")
return coffee.cost() + 70
}

override fun description(): String {
TODO("Not yet implemented")
return coffee.description() + ", ваниль"
}
}
9 changes: 7 additions & 2 deletions src/main/kotlin/ru/otus/homework/homework/NonEmptyStringDelegate.kt
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Expand Up @@ -6,11 +6,16 @@ import kotlin.reflect.KProperty
* Delegate that allows to set non-empty string value
*/
class NonEmptyStringDelegate() {

private var value: String = ""

operator fun getValue(thisRef: Any?, property: KProperty<*>): String {
TODO("Implement `getValue` function")
return value
}

operator fun setValue(thisRef: Any?, property: KProperty<*>, newValue: String) {
TODO("Implement `setValue` function")
if (newValue.isNotBlank()) {
this.value = newValue
}
}
}
34 changes: 32 additions & 2 deletions src/main/kotlin/ru/otus/homework/homework/UserProfile.kt
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Expand Up @@ -2,6 +2,9 @@

package ru.otus.homework.homework

import java.util.LinkedList
import kotlin.properties.Delegates

/**
* Профиль пользователя
*/
Expand Down Expand Up @@ -37,7 +40,8 @@ interface UserProfile {
* Creates user profile with logging
*/
fun createWithLogging(fullName: String, email: String): UserProfile.Logging {
TODO("Implement `createWithLogging` function")
return ProfileImplementationWithLogging(
create(fullName, email))
}
}
}
Expand All @@ -50,4 +54,30 @@ private val emailRegex = Regex("^[A-Za-z](.*)([@])(.+)(\\.)(.+)")
/**
* Реализация простого [UserProfile].
*/
private class ProfileImplementation(override var fullName: String, override var email: String): UserProfile
private class ProfileImplementation(fullName: String, email: String): UserProfile{
override var fullName : String by Delegates.vetoable(fullName) { _, _, newValue ->
newValue.isNotBlank()}

override var email : String by Delegates.vetoable(email) { _, _, newValue ->
newValue.isNotBlank() && emailRegex.matches(newValue)}
}

private class ProfileImplementationWithLogging(private val userProfile: UserProfile) : UserProfile.Logging, UserProfile by userProfile {
private val log = LinkedList<String>()

override var fullName: String
get() = userProfile.fullName
set(value) {
log.add("Changing `fullName` from '${userProfile.fullName}' to '$value'")
userProfile.fullName = value
}

override var email: String
get() = userProfile.email
set(value) {
log.add("Changing `email` from '${userProfile.email}' to '$value'")
userProfile.email = value
}

override fun getLog(): List<String> = log
}
4 changes: 2 additions & 2 deletions src/main/kotlin/ru/otus/homework/homework/processList.kt
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Expand Up @@ -8,7 +8,7 @@ inline fun processList(list: List<Int>, action: (Int) -> Unit) {

fun skipThreeAndPrint(list: List<Int>) {
processList(list) {
if (it == 3) return
println("Processing $it")
if (it == 3) return@processList
print("Processing $it\n")
}
}