org.jetbrains.kotlin.fir.analysis.checkers.expression.FirConstructorCallChecker.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2021 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.analysis.checkers.expression

import org.jetbrains.kotlin.config.LanguageFeature
import org.jetbrains.kotlin.descriptors.ClassKind
import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
import org.jetbrains.kotlin.diagnostics.reportOn
import org.jetbrains.kotlin.fir.declarations.FirRegularClass
import org.jetbrains.kotlin.fir.declarations.utils.isAbstract
import org.jetbrains.kotlin.fir.expressions.FirAnnotation
import org.jetbrains.kotlin.fir.expressions.FirFunctionCall
import org.jetbrains.kotlin.fir.resolvedSymbol
import org.jetbrains.kotlin.fir.symbols.impl.FirConstructorSymbol
import org.jetbrains.kotlin.fir.types.coneType
import org.jetbrains.kotlin.fir.types.toRegularClassSymbol

object FirConstructorCallChecker : FirFunctionCallChecker() {
    override fun check(expression: FirFunctionCall, context: CheckerContext, reporter: DiagnosticReporter) {
        val constructorSymbol = expression.calleeReference.resolvedSymbol as? FirConstructorSymbol ?: return
        val declarationClass = constructorSymbol.resolvedReturnTypeRef.coneType.toRegularClassSymbol(context.session)

        if (declarationClass != null) {
            if (declarationClass.isAbstract && declarationClass.classKind == ClassKind.CLASS) {
                reporter.reportOn(expression.source, FirErrors.CREATING_AN_INSTANCE_OF_ABSTRACT_CLASS, context)
            }
            if (declarationClass.classKind == ClassKind.ANNOTATION_CLASS &&
                context.qualifiedAccessOrAnnotationCalls.all { call ->
                    call !is FirAnnotation
                } &&
                context.containingDeclarations.all { klass ->
                    klass !is FirRegularClass || klass.classKind != ClassKind.ANNOTATION_CLASS
                }
            ) {
                if (!context.languageVersionSettings.supportsFeature(LanguageFeature.InstantiationOfAnnotationClasses) ||
                    declarationClass.typeParameterSymbols.isNotEmpty()
                ) reporter.reportOn(
                    expression.source,
                    FirErrors.ANNOTATION_CLASS_CONSTRUCTOR_CALL,
                    context
                )
            }
        }
    }
}