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/*
* Copyright 2018 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.
*/
@file:Suppress("OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE")
package kotlinx.serialization.internal
import kotlinx.serialization.*
import kotlinx.serialization.CompositeDecoder.Companion.UNKNOWN_NAME
import kotlin.jvm.JvmOverloads
class MissingDescriptorException(index: Int, origin: SerialDescriptor) :
SerializationException("Element descriptor at index $index has not been found in $origin")
open class SerialClassDescImpl @JvmOverloads constructor(
override val name: String,
private val generatedSerializer: GeneratedSerializer<*>? = null
) : SerialDescriptor {
override val kind: SerialKind get() = StructureKind.CLASS
private val names: MutableList<String> = ArrayList()
private val annotations: MutableList<MutableList<Annotation>> = mutableListOf()
private val classAnnotations: MutableList<Annotation> = mutableListOf()
private var flags = BooleanArray(4)
private val descriptors: MutableList<SerialDescriptor> = mutableListOf()
private var _indices: Map<String, Int>? = null
private val indices: Map<String, Int> by lazy { buildIndices() }
@JvmOverloads
fun addElement(name: String, isOptional: Boolean = false) {
names.add(name)
val idx = names.size - 1
ensureFlagsCapacity(idx)
flags[idx] = isOptional
annotations.add(mutableListOf())
}
fun pushAnnotation(a: Annotation) {
annotations.last().add(a)
}
fun pushDescriptor(desc: SerialDescriptor) {
descriptors.add(desc)
}
override fun getElementDescriptor(index: Int): SerialDescriptor {
// todo: cache
return generatedSerializer?.childSerializers()?.getOrNull(index)?.descriptor
?: descriptors.getOrNull(index)
?: throw MissingDescriptorException(index, this)
}
override fun isElementOptional(index: Int): Boolean {
return flags[index]
}
fun pushClassAnnotation(a: Annotation) {
classAnnotations.add(a)
}
override fun getEntityAnnotations(): List<Annotation> = classAnnotations
override fun getElementAnnotations(index: Int): List<Annotation> = annotations[index]
override val elementsCount: Int
get() = annotations.size
override fun getElementName(index: Int): String = names[index]
override fun getElementIndex(name: String): Int = indices[name] ?: UNKNOWN_NAME
private fun ensureFlagsCapacity(i: Int) {
if (flags.size <= i)
flags = flags.copyOf(flags.size * 2)
}
private fun buildIndices(): Map<String, Int> {
val indices = HashMap<String, Int>()
for (i in 0..names.size - 1)
indices.put(names[i], i)
return indices
}
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is SerialClassDescImpl) return false
if (name != other.name) return false
if (elementDescriptors() != other.elementDescriptors()) return false
return true
}
override fun hashCode(): Int {
var result = name.hashCode()
result = 31 * result + elementDescriptors().hashCode()
return result
}
override fun toString() = "$name$names"
}
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