/*
 * Copyright 2010-2017 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.resolve.calls.inference

import org.jetbrains.kotlin.resolve.calls.inference.TypeBounds.Bound
import org.jetbrains.kotlin.resolve.calls.inference.TypeBounds.BoundKind
import org.jetbrains.kotlin.resolve.calls.inference.TypeBounds.BoundKind.*
import org.jetbrains.kotlin.resolve.calls.inference.constraintPosition.ConstraintPosition
import org.jetbrains.kotlin.resolve.constants.IntegerValueTypeConstructor
import org.jetbrains.kotlin.types.*
import org.jetbrains.kotlin.types.error.ErrorUtils
import org.jetbrains.kotlin.types.checker.KotlinTypeChecker
import org.jetbrains.kotlin.utils.addIfNotNull
import java.util.*

class TypeBoundsImpl(override val typeVariable: TypeVariable) : TypeBounds {
    override val bounds = ArrayList<Bound>()

    private var resultValues: Collection<KotlinType>? = null

    var isFixed: Boolean = false
        private set

    fun setFixed() {
        isFixed = true
    }

    fun addBound(bound: Bound) {
        resultValues = null
        assert(bound.typeVariable == typeVariable) {
            "$bound is added for incorrect type variable ${bound.typeVariable.name}. Expected: ${typeVariable.name}"
        }
        bounds.add(bound)
    }

    private fun filterBounds(
