/*
* 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.descriptors.impl
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.descriptors.annotations.Annotations
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.TypeSubstitutor
import org.jetbrains.kotlin.utils.join
open class ValueParameterDescriptorImpl(
containingDeclaration: CallableDescriptor,
original: ValueParameterDescriptor?,
override val index: Int,
annotations: Annotations,
name: Name,
outType: KotlinType,
private val declaresDefaultValue: Boolean,
override val isCrossinline: Boolean,
override val isNoinline: Boolean,
override val varargElementType: KotlinType?,
source: SourceElement
) : VariableDescriptorImpl(containingDeclaration, annotations, name, outType, source), ValueParameterDescriptor {
companion object {
@JvmStatic
fun getDestructuringVariablesOrNull(valueParameterDescriptor: ValueParameterDescriptor) =
(valueParameterDescriptor as? ValueParameterDescriptorImpl.WithDestructuringDeclaration)?.destructuringVariables
@JvmStatic
fun createWithDestructuringDeclarations(containingDeclaration: CallableDescriptor,
original: ValueParameterDescriptor?,
index: Int,
annotations: Annotations,
name: Name,
outType: KotlinType,
declaresDefaultValue: Boolean,
isCrossinline: Boolean,
isNoinline: Boolean, varargElementType: KotlinType?, source: SourceElement,
destructuringVariables: (() -> List<VariableDescriptor>)?
): ValueParameterDescriptorImpl =
if (destructuringVariables == null)
ValueParameterDescriptorImpl(containingDeclaration, original, index, annotations, name, outType,
declaresDefaultValue, isCrossinline, isNoinline, varargElementType, source)
else
WithDestructuringDeclaration(containingDeclaration, original, index, annotations, name, outType,
declaresDefaultValue, isCrossinline, isNoinline, varargElementType, source,
destructuringVariables)
@JvmStatic
fun getNameForDestructuredParameterOrNull(valueParameterDescriptor: ValueParameterDescriptor): String? {
val variablesOrNull = ValueParameterDescriptorImpl.getDestructuringVariablesOrNull(valueParameterDescriptor)
return if (variablesOrNull == null) null else
"$" + join(
variablesOrNull.map { descriptor -> if (descriptor.name.isSpecial) "\$_\$" else descriptor.name.asString() },
"_"
)
}
}
class WithDestructuringDeclaration internal constructor(
containingDeclaration: CallableDescriptor,
original: ValueParameterDescriptor?,
index: Int,
annotations: Annotations, name: Name,
outType: KotlinType,
declaresDefaultValue: Boolean,
isCrossinline: Boolean,
isNoinline: Boolean, varargElementType: KotlinType?,
source: SourceElement,
destructuringVariables: () -> List<VariableDescriptor>
) : ValueParameterDescriptorImpl(
containingDeclaration, original, index, annotations, name, outType, declaresDefaultValue,
isCrossinline, isNoinline,
varargElementType, source) {
// It's forced to be lazy because its resolution depends on receiver of relevant lambda, that is being created at the same moment
// as value parameters.
// Must be forced via ForceResolveUtil.forceResolveAllContents()
val destructuringVariables by lazy(destructuringVariables)
override fun copy(newOwner: CallableDescriptor, newName: Name, newIndex: Int): ValueParameterDescriptor {
return WithDestructuringDeclaration(
newOwner, null, newIndex, annotations, newName, type, declaresDefaultValue(),
isCrossinline, isNoinline, varargElementType, SourceElement.NO_SOURCE
) { destructuringVariables }
}
}
private val original: ValueParameterDescriptor = original ?: this
override fun getContainingDeclaration() = super.getContainingDeclaration() as CallableDescriptor
override fun declaresDefaultValue(): Boolean {
return declaresDefaultValue && (containingDeclaration as CallableMemberDescriptor).kind.isReal
}
override fun getOriginal() = if (original === this) this else original.original
override fun substitute(substitutor: TypeSubstitutor): ValueParameterDescriptor {
if (substitutor.isEmpty) return this
throw UnsupportedOperationException() // TODO
}
override fun <R, D> accept(visitor: DeclarationDescriptorVisitor<R, D>, data: D): R {
return visitor.visitValueParameterDescriptor(this, data)
}
override fun isVar() = false
override fun getCompileTimeInitializer() = null
override fun copy(newOwner: CallableDescriptor, newName: Name, newIndex: Int): ValueParameterDescriptor {
return ValueParameterDescriptorImpl(
newOwner, null, newIndex, annotations, newName, type, declaresDefaultValue(),
isCrossinline, isNoinline, varargElementType, SourceElement.NO_SOURCE
)
}
override fun getVisibility() = Visibilities.LOCAL
override fun getOverriddenDescriptors(): Collection<ValueParameterDescriptor> {
return containingDeclaration.overriddenDescriptors.map {
it.valueParameters[index]
}
}
}