plugins/kotlin/uast/uast-kotlin-base/src/org/jetbrains/uast/kotlin/expressions/KotlinUPrefixExpression.kt


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// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.

package org.jetbrains.uast.kotlin

import com.intellij.psi.PsiMethod
import org.jetbrains.kotlin.lexer.KtTokens
import org.jetbrains.kotlin.psi.KtPrefixExpression
import org.jetbrains.uast.UElement
import org.jetbrains.uast.UIdentifier
import org.jetbrains.uast.UPrefixExpression
import org.jetbrains.uast.UastPrefixOperator

class KotlinUPrefixExpression(
    override val sourcePsi: KtPrefixExpression,
    givenParent: UElement?
) : KotlinAbstractUExpression(givenParent), UPrefixExpression, KotlinUElementWithType, KotlinEvaluatableUElement {
    override val operand by lz {
        baseResolveProviderService.baseKotlinConverter.convertOrEmpty(sourcePsi.baseExpression, this)
    }

    override val operatorIdentifier: UIdentifier
        get() = KotlinUIdentifier(sourcePsi.operationReference, this)

    override fun resolveOperator(): PsiMethod? =
        baseResolveProviderService.resolveCall(sourcePsi)

    override val operator = when (sourcePsi.operationToken) {
        KtTokens.EXCL -> UastPrefixOperator.LOGICAL_NOT
        KtTokens.PLUS -> UastPrefixOperator.UNARY_PLUS
        KtTokens.MINUS -> UastPrefixOperator.UNARY_MINUS
        KtTokens.PLUSPLUS -> UastPrefixOperator.INC
        KtTokens.MINUSMINUS -> UastPrefixOperator.DEC
        else -> UastPrefixOperator.UNKNOWN
    }
}