Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright 2010-2016 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.deserialization
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptorImpl
import org.jetbrains.kotlin.incremental.components.NoLookupLocation
import org.jetbrains.kotlin.name.ClassId
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.constants.AnnotationValue
import org.jetbrains.kotlin.resolve.constants.ConstantValue
import org.jetbrains.kotlin.resolve.constants.ConstantValueFactory
import org.jetbrains.kotlin.serialization.ProtoBuf.Annotation
import org.jetbrains.kotlin.serialization.ProtoBuf.Annotation.Argument
import org.jetbrains.kotlin.serialization.ProtoBuf.Annotation.Argument.Value
import org.jetbrains.kotlin.serialization.ProtoBuf.Annotation.Argument.Value.Type
import org.jetbrains.kotlin.types.ErrorUtils
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.SimpleType
import org.jetbrains.kotlin.types.Variance
import org.jetbrains.kotlin.types.typeUtil.isSubtypeOf
class AnnotationDeserializer(private val module: ModuleDescriptor, private val notFoundClasses: NotFoundClasses) {
private val builtIns: KotlinBuiltIns
get() = module.builtIns
private val factory = ConstantValueFactory(builtIns)
fun deserializeAnnotation(proto: Annotation, nameResolver: NameResolver): AnnotationDescriptor {
val annotationClass = resolveClass(nameResolver.getClassId(proto.id))
var arguments = emptyMap>()
if (proto.argumentCount != 0 && !ErrorUtils.isError(annotationClass) && DescriptorUtils.isAnnotationClass(annotationClass)) {
val constructor = annotationClass.constructors.singleOrNull()
if (constructor != null) {
val parameterByName = constructor.valueParameters.associateBy { it.name }
arguments = proto.argumentList.mapNotNull { resolveArgument(it, parameterByName, nameResolver) }.toMap()
}
}
return AnnotationDescriptorImpl(annotationClass.defaultType, arguments, SourceElement.NO_SOURCE)
}
private fun resolveArgument(
proto: Argument,
parameterByName: Map,
nameResolver: NameResolver
): Pair>? {
val parameter = parameterByName[nameResolver.getName(proto.nameId)] ?: return null
return Pair(parameter, resolveValue(parameter.type, proto.value, nameResolver))
}
fun resolveValue(
expectedType: KotlinType,
value: Value,
nameResolver: NameResolver
): ConstantValue<*> {
val result: ConstantValue<*> = when (value.type) {
Type.BYTE -> factory.createByteValue(value.intValue.toByte())
Type.CHAR -> factory.createCharValue(value.intValue.toChar())
Type.SHORT -> factory.createShortValue(value.intValue.toShort())
Type.INT -> factory.createIntValue(value.intValue.toInt())
Type.LONG -> factory.createLongValue(value.intValue)
Type.FLOAT -> factory.createFloatValue(value.floatValue)
Type.DOUBLE -> factory.createDoubleValue(value.doubleValue)
Type.BOOLEAN -> factory.createBooleanValue(value.intValue != 0L)
Type.STRING -> {
factory.createStringValue(nameResolver.getString(value.stringValue))
}
Type.CLASS -> {
// TODO: support class literals
error("Class literal annotation arguments are not supported yet (${nameResolver.getClassId(value.classId)})")
}
Type.ENUM -> {
resolveEnumValue(nameResolver.getClassId(value.classId), nameResolver.getName(value.enumValueId))
}
Type.ANNOTATION -> {
AnnotationValue(deserializeAnnotation(value.annotation, nameResolver))
}
Type.ARRAY -> {
val expectedIsArray = KotlinBuiltIns.isArray(expectedType) || KotlinBuiltIns.isPrimitiveArray(expectedType)
val arrayElements = value.arrayElementList
val actualArrayType =
if (arrayElements.isNotEmpty()) {
val actualElementType = resolveArrayElementType(arrayElements.first(), nameResolver)
builtIns.getPrimitiveArrayKotlinTypeByPrimitiveKotlinType(actualElementType) ?:
builtIns.getArrayType(Variance.INVARIANT, actualElementType)
}
else {
// In the case of empty array, no element has the element type, so we fall back to the expected type, if any.
// This is not very accurate when annotation class has been changed without recompiling clients,
// but should not in fact matter because the value is empty anyway
if (expectedIsArray) expectedType else builtIns.getArrayType(Variance.INVARIANT, builtIns.anyType)
}
val expectedElementType = builtIns.getArrayElementType(if (expectedIsArray) expectedType else actualArrayType)
factory.createArrayValue(
arrayElements.map {
resolveValue(expectedElementType, it, nameResolver)
},
actualArrayType
)
}
else -> error("Unsupported annotation argument type: ${value.type} (expected $expectedType)")
}
return if (result.type.isSubtypeOf(expectedType)) {
result
}
else {
// This means that an annotation class has been changed incompatibly without recompiling clients
factory.createErrorValue("Unexpected argument value")
}
}
// NOTE: see analogous code in BinaryClassAnnotationAndConstantLoaderImpl
private fun resolveEnumValue(enumClassId: ClassId, enumEntryName: Name): ConstantValue<*> {
val enumClass = resolveClass(enumClassId)
if (enumClass.kind == ClassKind.ENUM_CLASS) {
val enumEntry = enumClass.unsubstitutedInnerClassesScope.getContributedClassifier(enumEntryName, NoLookupLocation.FROM_DESERIALIZATION)
if (enumEntry is ClassDescriptor) {
return factory.createEnumValue(enumEntry)
}
}
return factory.createErrorValue("Unresolved enum entry: $enumClassId.$enumEntryName")
}
private fun resolveArrayElementType(value: Value, nameResolver: NameResolver): SimpleType =
with(builtIns) {
when (value.type) {
Type.BYTE -> byteType
Type.CHAR -> charType
Type.SHORT -> shortType
Type.INT -> intType
Type.LONG -> longType
Type.FLOAT -> floatType
Type.DOUBLE -> doubleType
Type.BOOLEAN -> booleanType
Type.STRING -> stringType
Type.CLASS -> error("Arrays of class literals are not supported yet") // TODO: support arrays of class literals
Type.ENUM -> resolveClass(nameResolver.getClassId(value.classId)).defaultType
Type.ANNOTATION -> resolveClass(nameResolver.getClassId(value.annotation.id)).defaultType
Type.ARRAY -> error("Array of arrays is impossible")
else -> error("Unknown type: ${value.type}")
}
}
private fun resolveClass(classId: ClassId): ClassDescriptor {
return module.findNonGenericClassAcrossDependencies(classId, notFoundClasses)
}
}
