/*
 * Copyright 2010-2023 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.declaration

import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
import org.jetbrains.kotlin.diagnostics.reportOn
import org.jetbrains.kotlin.fir.analysis.checkers.MppCheckerKind
import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
import org.jetbrains.kotlin.fir.analysis.checkers.getModifier
import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
import org.jetbrains.kotlin.fir.declarations.FirClass
import org.jetbrains.kotlin.fir.declarations.utils.isFun
import org.jetbrains.kotlin.fir.declarations.utils.isInterface
import org.jetbrains.kotlin.lexer.KtTokens

object FirSealedInterfaceAllowedChecker : FirClassChecker(MppCheckerKind.Common) {
    context(context: CheckerContext, reporter: DiagnosticReporter)
    override fun check(declaration: FirClass) {
        if (!declaration.isInterface || !declaration.isFun) {
            return
        }
        val keyword = declaration.getModifier(KtTokens.SEALED_KEYWORD) ?: return
        reporter.reportOn(keyword.source, FirErrors.UNSUPPORTED_SEALED_FUN_INTERFACE)
    }
}
