[KSP2] JVM names for property getters/setters are incorrect if they start with "is"

[jonamireh]

Summary

JVM names for Kotlin property getters & setters are incorrect when the Kotlin property name starts with "is". Specifically, Resolver.getJvmName is returning a name that does not match what the Kotlin compiler generated.

Environment

KSP: 2.1.0-Beta2-1.0.26 with KSP2
Kotlin: 2.1.0-Beta2
AGP: 8.7.1
Gradle: 8.10

Context

Consider the following code:

package dev.jonamireh

interface TestInterface {
    var isOpen: String
}

• For the property getter of isOpen, Resolver.getJvmName() is returning getIsOpen even though the Kotlin compiler generated isOpen.
• For the property setter of isOpen, Resolver.getJvmName() is returning setIsOpen even though the Kotlin compiler generated setOpen.

This permuation is documented in the Kotlin documentation for Calling Kotlin from Java:

If the name of the property starts with is, a different name mapping rule is used: the name of the getter will be the same as the property name, and the name of the setter will be obtained by replacing is with set. For example, for a property isOpen, the getter will be called isOpen() and the setter will be called setOpen(). This rule applies for properties of any type, not just Boolean.

Sample project

Here's a sample project where :processor will print the JVM name according to getJvmName for each property getter & setter. You can test out what KSP thinks the getter/setter should be with:

./gradlew :jvm:assemble --info --rerun-tasks | grep "\[ksp\]"