org.jetbrains.kotlin.serialization.AnnotationSerializer.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* 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 org.jetbrains.kotlin.serialization
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.annotations.AnnotationArgumentVisitor
import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
import org.jetbrains.kotlin.metadata.ProtoBuf
import org.jetbrains.kotlin.metadata.ProtoBuf.Annotation.Argument.Value
import org.jetbrains.kotlin.metadata.ProtoBuf.Annotation.Argument.Value.Type
import org.jetbrains.kotlin.metadata.deserialization.Flags
import org.jetbrains.kotlin.resolve.constants.*
import org.jetbrains.kotlin.resolve.descriptorUtil.annotationClass
import org.jetbrains.kotlin.types.ErrorUtils
import org.jetbrains.kotlin.types.KotlinType
open class AnnotationSerializer(private val stringTable: DescriptorAwareStringTable) {
fun serializeAnnotation(annotation: AnnotationDescriptor): ProtoBuf.Annotation? = ProtoBuf.Annotation.newBuilder().apply {
val annotationClass = annotation.annotationClass ?: error("Annotation type is not a class: ${annotation.type}")
if (ErrorUtils.isError(annotationClass)) {
if (ignoreAnnotation(annotation.type)) return null
error("Unresolved annotation type: ${annotation.type} at ${annotation.source.containingFile}")
}
id = stringTable.getFqNameIndex(annotationClass)
for ((name, value) in annotation.allValueArguments) {
val argument = ProtoBuf.Annotation.Argument.newBuilder()
argument.nameId = stringTable.getStringIndex(name.asString())
argument.setValue(valueProto(value))
addArgument(argument)
}
}.build()
fun valueProto(constant: ConstantValue<*>): Value.Builder = Value.newBuilder().apply {
constant.accept(object : AnnotationArgumentVisitor {
override fun visitAnnotationValue(value: AnnotationValue, data: Unit) {
type = Type.ANNOTATION
annotation = serializeAnnotation(value.value)
}
override fun visitArrayValue(value: ArrayValue, data: Unit) {
type = Type.ARRAY
for (element in value.value) {
addArrayElement(valueProto(element).build())
}
}
override fun visitBooleanValue(value: BooleanValue, data: Unit) {
type = Type.BOOLEAN
intValue = if (value.value) 1 else 0
}
override fun visitByteValue(value: ByteValue, data: Unit) {
type = Type.BYTE
intValue = value.value.toLong()
}
override fun visitCharValue(value: CharValue, data: Unit) {
type = Type.CHAR
intValue = value.value.code.toLong()
}
override fun visitDoubleValue(value: DoubleValue, data: Unit) {
type = Type.DOUBLE
doubleValue = value.value
}
override fun visitEnumValue(value: EnumValue, data: Unit) {
type = Type.ENUM
classId = stringTable.getQualifiedClassNameIndex(value.enumClassId)
enumValueId = stringTable.getStringIndex(value.enumEntryName.asString())
}
override fun visitErrorValue(value: ErrorValue, data: Unit) {
throw UnsupportedOperationException("Error value: $value")
}
override fun visitFloatValue(value: FloatValue, data: Unit) {
type = Type.FLOAT
floatValue = value.value
}
override fun visitIntValue(value: IntValue, data: Unit) {
type = Type.INT
intValue = value.value.toLong()
}
override fun visitKClassValue(value: KClassValue, data: Unit) {
type = Type.CLASS
when (val classValue = value.value) {
is KClassValue.Value.NormalClass -> {
classId = stringTable.getQualifiedClassNameIndex(classValue.classId)
if (classValue.arrayDimensions > 0) {
arrayDimensionCount = classValue.arrayDimensions
}
}
is KClassValue.Value.LocalClass -> {
var arrayDimensions = 0
var type = classValue.type
while (KotlinBuiltIns.isArray(type)) {
arrayDimensions++
type = type.arguments.single().type
}
val descriptor = type.constructor.declarationDescriptor as? ClassDescriptor
?: error("Type parameters are not allowed in class literal annotation arguments: $classValue")
classId = stringTable.getFqNameIndex(descriptor)
if (arrayDimensions > 0) {
arrayDimensionCount = arrayDimensions
}
}
}
}
override fun visitLongValue(value: LongValue, data: Unit) {
type = Type.LONG
intValue = value.value
}
override fun visitNullValue(value: NullValue, data: Unit) {
throw UnsupportedOperationException("Null should not appear in annotation arguments")
}
override fun visitShortValue(value: ShortValue, data: Unit) {
type = Type.SHORT
intValue = value.value.toLong()
}
override fun visitStringValue(value: StringValue, data: Unit) {
type = Type.STRING
stringValue = stringTable.getStringIndex(value.value)
}
override fun visitUByteValue(value: UByteValue, data: Unit?) {
type = Type.BYTE
intValue = value.value.toLong()
flags = Flags.IS_UNSIGNED.toFlags(true)
}
override fun visitUShortValue(value: UShortValue, data: Unit?) {
type = Type.SHORT
intValue = value.value.toLong()
flags = Flags.IS_UNSIGNED.toFlags(true)
}
override fun visitUIntValue(value: UIntValue, data: Unit?) {
type = Type.INT
intValue = value.value.toLong()
flags = Flags.IS_UNSIGNED.toFlags(true)
}
override fun visitULongValue(value: ULongValue, data: Unit?) {
type = Type.LONG
intValue = value.value
flags = Flags.IS_UNSIGNED.toFlags(true)
}
}, Unit)
}
protected open fun ignoreAnnotation(type: KotlinType): Boolean = false
}