org.jetbrains.kotlin.fir.resolve.transformers.FirAbstractTreeTransformerWithSuperTypes.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package org.jetbrains.kotlin.fir.resolve.transformers

import org.jetbrains.kotlin.fir.declarations.FirMemberDeclaration
import org.jetbrains.kotlin.fir.declarations.FirResolvePhase
import org.jetbrains.kotlin.fir.scopes.impl.FirCompositeScope
import org.jetbrains.kotlin.fir.scopes.impl.FirMemberTypeParameterScope

abstract class FirAbstractTreeTransformerWithSuperTypes(
    phase: FirResolvePhase,
    reversedScopePriority: Boolean
) : FirAbstractTreeTransformer(phase) {
    protected val towerScope = FirCompositeScope(mutableListOf(), reversedPriority = reversedScopePriority)

    protected inline fun  withScopeCleanup(crossinline l: () -> T): T {
        val sizeBefore = towerScope.scopes.size
        val result = l()
        val size = towerScope.scopes.size
        assert(size >= sizeBefore)
        repeat(size - sizeBefore) {
            towerScope.scopes.let { it.removeAt(it.size - 1) }
        }
        return result
    }

    protected fun FirMemberDeclaration.addTypeParametersScope() {
        val scopes = towerScope.scopes
        if (typeParameters.isNotEmpty()) {
            scopes += FirMemberTypeParameterScope(this)
        }
    }
}