org.jetbrains.kotlin.psi.KtEnumEntrySuperclassReferenceExpression.kt Maven / Gradle / Ivy

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/*
 * 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.psi

import com.intellij.lang.ASTNode
import com.intellij.psi.PsiElement
import com.intellij.psi.tree.IElementType
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.name.SpecialNames
import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
import org.jetbrains.kotlin.psi.stubs.KotlinEnumEntrySuperclassReferenceExpressionStub
import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes

// This node represents "fake" reference expression for ENUM_ENTRY(arguments) constructor syntax
// It uses the superclass enum node to provide access to the real constructor name
class KtEnumEntrySuperclassReferenceExpression :
    KtExpressionImplStub, KtSimpleNameExpression {

    constructor(node: ASTNode) : super(node)

    constructor(stub: KotlinEnumEntrySuperclassReferenceExpressionStub) :
            super(stub, KtStubElementTypes.ENUM_ENTRY_SUPERCLASS_REFERENCE_EXPRESSION)

    // It is the owner enum class (not an enum entry but the whole enum)
    private val referencedElement: KtClass?
        get() = calcReferencedElement()

    private fun calcReferencedElement(): KtClass? {
        val owner = this.getStrictParentOfType()
        return owner?.parent?.parent as? KtClass
    }

    override fun getReferencedName(): String {
        val stub = stub
        if (stub != null) {
            return stub.getReferencedName()
        }
        val text = (getReferencedNameElement() as KtNamedDeclaration).nameAsSafeName.asString()
        return KtPsiUtil.unquoteIdentifierOrFieldReference(text)
    }

    override fun getReferencedNameAsName(): Name {
        return referencedElement?.name?.let { Name.identifier(it) } ?: SpecialNames.NO_NAME_PROVIDED
    }

    override fun getReferencedNameElement(): PsiElement {
        return referencedElement!!
    }

    override fun getIdentifier(): PsiElement? {
        return referencedElement?.nameIdentifier
    }

    override fun getReferencedNameElementType(): IElementType {
        return getReferencedNameElement().node!!.elementType
    }

    override fun  accept(visitor: KtVisitor, data: D): R {
        return visitor.visitSimpleNameExpression(this, data)
    }
}