KspFieldElement.kt
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.room.compiler.processing.ksp
import androidx.room.compiler.processing.XAnnotated
import androidx.room.compiler.processing.XFieldElement
import androidx.room.compiler.processing.XHasModifiers
import androidx.room.compiler.processing.XType
import androidx.room.compiler.processing.ksp.KspAnnotated.UseSiteFilter.Companion.NO_USE_SITE_OR_FIELD
import androidx.room.compiler.processing.ksp.synthetic.KspSyntheticPropertyMethodElement
import com.google.devtools.ksp.isPrivate
import com.google.devtools.ksp.symbol.KSPropertyDeclaration
import com.google.devtools.ksp.symbol.KSType
import com.google.devtools.ksp.symbol.Modifier
internal class KspFieldElement(
env: KspProcessingEnv,
override val declaration: KSPropertyDeclaration,
) : KspElement(env, declaration),
XFieldElement,
XHasModifiers by KspHasModifiers.create(declaration),
XAnnotated by KspAnnotated.create(env, declaration, NO_USE_SITE_OR_FIELD) {
override val enclosingElement: KspMemberContainer by lazy {
declaration.requireEnclosingMemberContainer(env)
}
override val closestMemberContainer: KspMemberContainer by lazy {
enclosingElement
}
override val name: String by lazy {
declaration.simpleName.asString()
}
override val type: KspType by lazy {
asMemberOf(enclosingElement.type?.ksType)
}
val syntheticAccessors: List<KspSyntheticPropertyMethodElement> by lazy {
when {
declaration.hasJvmFieldAnnotation() -> {
// jvm fields cannot have accessors but KSP generates synthetic accessors for
// them. We check for JVM field first before checking the getter
emptyList()
}
declaration.isPrivate() -> emptyList()
declaration.modifiers.contains(Modifier.CONST) -> {
// No accessors are needed for const properties:
// https://kotlinlang.org/docs/java-to-kotlin-interop.html#static-fields
emptyList()
}
else -> {
sequenceOf(declaration.getter, declaration.setter)
.filterNotNull()
.filterNot {
// KAPT does not generate methods for privates, KSP does so we filter
// them out.
it.modifiers.contains(Modifier.PRIVATE)
}
.map { accessor ->
KspSyntheticPropertyMethodElement.create(
env = env,
field = this,
accessor = accessor
)
}.toList()
}
}
}
val syntheticSetter
get() = syntheticAccessors.firstOrNull {
it.parameters.size == 1
}
override fun asMemberOf(other: XType): KspType {
if (enclosingElement.type?.isSameType(other) != false) {
return type
}
check(other is KspType)
return asMemberOf(other.ksType)
}
private fun asMemberOf(ksType: KSType?): KspType {
return env.wrap(
originatingReference = declaration.type,
ksType = declaration.typeAsMemberOf(ksType)
)
}
companion object {
fun create(env: KspProcessingEnv, declaration: KSPropertyDeclaration): KspFieldElement {
return KspFieldElement(env, declaration)
}
}
}