Classes

Declare a class

Use ktClass() inside ktFile {} to declare a class. Pass the class name as its argument.

import com.alexstyl.prosakt.ktFile

val source = ktFile {
    ktClass("GreetingService") {
    }
}

Generated Kotlin:

class GreetingService

Add a primary constructor

Use constructor {} inside ktClass {} to configure the primary constructor. Use parameter() inside it to add a parameter, then type {} and reference() to specify its type.

import com.alexstyl.prosakt.ktFile

val source = ktFile {
    ktClass("GreetingService") {
        constructor {
            parameter("prefix") {
                type {
                    reference("String")
                }
            }
        }
    }
}

Generated Kotlin:

class GreetingService(prefix: String)

Declare constructor properties

Use property {} inside a constructor parameter to generate a val property. Set mutable = true inside that block to generate var instead. Set modifiers = listOf("data") on the class to generate a data class.

import com.alexstyl.prosakt.ktFile

val source = ktFile {
    ktClass("User") {
        modifiers = listOf("data")
        constructor {
            parameter("name") {
                type {
                    reference("String")
                }
                property {
                }
            }
            parameter("active") {
                type {
                    reference("Boolean")
                }
                default {
                    literal(true)
                }
                property {
                    mutable = true
                }
            }
        }
    }
}

Generated Kotlin:

data class User(val name: String, var active: Boolean = true)

Use visibility = Visibility.Private inside property {} to make a constructor property private. Call constructor {} once per class; add all primary-constructor parameters inside it.

Add members

Use ktFunction(), ktValue(), or ktVariable() inside the class block to add members. Use body {} inside a function to define its implementation.

import com.alexstyl.prosakt.ktFile

val source = ktFile {
    ktClass("GreetingService") {
        ktFunction("greeting") {
            returns {
                type {
                    reference("String")
                }
            }
            body {
                literal("Hello")
            }
        }
    }
}

Generated Kotlin:

class GreetingService {
    fun greeting(): String {
        return "Hello"
    }
}

To add declaration keywords such as open, use modifiers; see Visibility & modifiers.