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Better lookup for serializer() function in companion for generic classes because user can define a parameterless shorthand one

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Fixes Kotlin/kotlinx.serialization/#228
This commit is contained in:
Leonid Startsev
2018-10-08 13:57:43 +03:00
parent 077f51e2f4
commit 104368de3b
1 changed files with 9 additions and 2 deletions
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plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/common/SerializableCompanionCodegen.kt
+9 -2
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@@ -18,10 +18,11 @@ package org.jetbrains.kotlinx.serialization.compiler.backend.common
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.FunctionDescriptor
import org.jetbrains.kotlin.psi2ir.findSingleFunction
import org.jetbrains.kotlin.incremental.components.NoLookupLocation
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlinx.serialization.compiler.resolve.SerialEntityNames.SERIALIZER_PROVIDER_NAME
import org.jetbrains.kotlinx.serialization.compiler.resolve.getSerializableClassDescriptorByCompanion
import org.jetbrains.kotlinx.serialization.compiler.resolve.isKSerializer
abstract class SerializableCompanionCodegen(
protected val companionDescriptor: ClassDescriptor,
@@ -30,7 +31,13 @@ abstract class SerializableCompanionCodegen(
protected val serializableDescriptor: ClassDescriptor = getSerializableClassDescriptorByCompanion(companionDescriptor)!!
fun generate() {
val serializerGetterDescriptor = companionDescriptor.unsubstitutedMemberScope.findSingleFunction(SERIALIZER_PROVIDER_NAME)
val serializerGetterDescriptor = companionDescriptor.unsubstitutedMemberScope.getContributedFunctions(
SERIALIZER_PROVIDER_NAME,
NoLookupLocation.FROM_BACKEND
).first { func ->
func.valueParameters.size == serializableDescriptor.declaredTypeParameters.size &&
func.valueParameters.all { isKSerializer(it.type) }
}
generateSerializerGetter(serializerGetterDescriptor)
}