org.jetbrains.kotlin.asJava.LightClassGenerationSupport.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2022 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.asJava

import com.intellij.openapi.project.Project
import org.jetbrains.kotlin.asJava.classes.*
import org.jetbrains.kotlin.config.AnalysisFlags
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
import org.jetbrains.kotlin.lexer.KtTokens
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.constants.evaluate.ConstantExpressionEvaluator
import org.jetbrains.kotlin.resolve.lazy.descriptors.LazyClassDescriptor

abstract class LightClassGenerationSupport {
    abstract fun resolveToDescriptor(declaration: KtDeclaration): DeclarationDescriptor?

    abstract fun analyze(element: KtElement): BindingContext

    abstract fun analyzeAnnotation(element: KtAnnotationEntry): AnnotationDescriptor?

    abstract fun analyzeWithContent(element: KtClassOrObject): BindingContext

    protected abstract fun getUltraLightClassSupport(element: KtElement): KtUltraLightSupport

    fun createConstantEvaluator(expression: KtExpression): ConstantExpressionEvaluator = getUltraLightClassSupport(expression).run {
        ConstantExpressionEvaluator(moduleDescriptor, languageVersionSettings)
    }

    fun createUltraLightClassForFacade(facadeClassFqName: FqName, files: Collection): KtUltraLightClassForFacade {
        val filesToSupports: List> = files.map {
            it to getUltraLightClassSupport(it)
        }

        return KtUltraLightClassForFacade(
            facadeClassFqName,
            files,
            filesToSupports
        )
    }

    fun createUltraLightClass(element: KtClassOrObject): KtUltraLightClass = getUltraLightClassSupport(element).let { support ->
        if (support.languageVersionSettings.getFlag(AnalysisFlags.eagerResolveOfLightClasses)) {
            val descriptor = resolveToDescriptor(element)
            (descriptor as? LazyClassDescriptor)?.forceResolveAllContents()
        }

        when {
            element is KtObjectDeclaration && element.isObjectLiteral() ->
                KtUltraLightClassForAnonymousDeclaration(element, support)

            element.safeIsLocal() ->
                KtUltraLightClassForLocalDeclaration(element, support)

            (element.hasModifier(KtTokens.INLINE_KEYWORD)) ->
                KtUltraLightInlineClass(element, support)

            else -> KtUltraLightClass(element, support)
        }
    }

    fun createUltraLightClassForScript(script: KtScript): KtUltraLightClassForScript =
        KtUltraLightClassForScript(script, support = getUltraLightClassSupport(script))

    companion object {
        @JvmStatic
        fun getInstance(project: Project): LightClassGenerationSupport {
            return project.getService(LightClassGenerationSupport::class.java)
        }
    }
}