How to pass arguments to super using KotlinPoet

Question

I am using KotlinPoet to generate some code. I have an abstract class with some parameters. Let´s say:

abstract class Foo (val foo: String)

And I want to use Kotlin Poet so I can create an implementation of this class in the following way:

class Bar (val bar: String) : Foo ("I am bar")

My code generation looks this way:

// Create the constructor function
val constructorSpec = FunSpec.constructorBuilder().addParameter("bar", String::class)

// Create the property definition
val propertySpec = PropertySpec.builder("bar",String::class).initializer("bar").build()

// Create the class definition
val classSpec = TypeSpec.classBuilder("Bar").superclass(Foo::class).primaryConstructor(constructorSpec).
    .addProperty(propertySpec)

I have try this two ways to get the results, but none of them worked:

// First method using the TypeSpec
classSpec.addSuperclassConstructorParameter(CodeBlock.of("%S","I am bar"))

// Second method using the FunSpec
constructorSpec.callSuperConstructor(CodeBlock.of("%S","I am bar"))

Is there any way I can achieve passing parameters to the super class?

Can you please clarify what you mean by "none of them worked"? What exactly are you seeing when trying both of the options? Here's an example unit test that uses `addSuperclassConstructorParameter()` and produces the output similar to what you're looking for: https://github.com/square/kotlinpoet/blob/master/kotlinpoet/src/test/java/com/squareup/kotlinpoet/TypeSpecTest.kt#L3856-L3871 — Egor, Feb 08 '23 at 22:08

score 0 · Answer 1 · answered Mar 15 '23 at 18:07

After a lot of issues I finally found the problem, gradle was not executing the ksp task due the cache, so I could only see the old version of the processor.

The one that had work for me was:

classSpec.addSuperclassConstructorParameter(CodeBlock.of("%S","I am bar"))

How to pass arguments to super using KotlinPoet

1 Answers1