/*
 * 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.plugin.sandbox.fir.checkers

import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
import org.jetbrains.kotlin.diagnostics.InternalDiagnosticFactoryMethod
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.expression.FirFunctionCallChecker
import org.jetbrains.kotlin.fir.expressions.FirFunctionCall
import org.jetbrains.kotlin.fir.expressions.resolvedArgumentMapping
import org.jetbrains.kotlin.plugin.sandbox.fir.types.ConeNumberSignAttribute
import org.jetbrains.kotlin.plugin.sandbox.fir.types.numberSign
import org.jetbrains.kotlin.fir.types.coneType
import org.jetbrains.kotlin.fir.types.resolvedType

object SignedNumberCallChecker : FirFunctionCallChecker(MppCheckerKind.Common) {
    context(context: CheckerContext, reporter: DiagnosticReporter)
    override fun check(expression: FirFunctionCall) {
        val argumentMapping = expression.resolvedArgumentMapping ?: return
        for ((argument, parameter) in argumentMapping.entries) {
            val expectedSign = parameter.returnTypeRef.coneType.attributes.numberSign ?: continue
            val actualSign = argument.resolvedType.attributes.numberSign
            if (expectedSign != actualSign) {
                reporter.reportOn(
                    argument.source, PluginErrors.ILLEGAL_NUMBER_SIGN, expectedSign.asString(), actualSign.asString()
                )
            }
        }
    }

    private fun ConeNumberSignAttribute?.asString(): String = when (this?.sign) {
        null -> "None"
        else -> sign.name
    }
}
