/*
* 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.contracts.model.functors
import org.jetbrains.kotlin.contracts.model.structure.ESReturns
import org.jetbrains.kotlin.contracts.model.structure.ESConstant
import org.jetbrains.kotlin.contracts.model.ConditionalEffect
import org.jetbrains.kotlin.contracts.model.ESEffect
import org.jetbrains.kotlin.contracts.model.Computation
abstract class AbstractBinaryFunctor : AbstractReducingFunctor() {
override fun doInvocation(arguments: List<Computation>): List<ESEffect> {
assert(arguments.size == 2, { "Wrong size of arguments list for Binary functor: expected 2, got ${arguments.size}" })
return invokeWithArguments(arguments[0], arguments[1])
}
fun invokeWithArguments(left: Computation, right: Computation): List<ESEffect> {
if (left is ESConstant) return invokeWithConstant(right, left)
if (right is ESConstant) return invokeWithConstant(left, right)
val nonInterestingEffects = mutableListOf<ESEffect>()
val leftValueReturning = mutableListOf<ConditionalEffect>()
val rightValueReturning = mutableListOf<ConditionalEffect>()
left.effects.forEach {
if (it !is ConditionalEffect || it.simpleEffect !is ESReturns || it.simpleEffect.value == ESConstant.WILDCARD)
nonInterestingEffects += it
else
leftValueReturning += it
}
right.effects.forEach {
if (it !is ConditionalEffect || it.simpleEffect !is ESReturns || it.simpleEffect.value == ESConstant.WILDCARD)
nonInterestingEffects += it
else
rightValueReturning += it
}
val evaluatedByFunctor = invokeWithReturningEffects(leftValueReturning, rightValueReturning)
return nonInterestingEffects + evaluatedByFunctor
}
protected abstract fun invokeWithConstant(computation: Computation, constant: ESConstant): List<ESEffect>
protected abstract fun invokeWithReturningEffects(
left: List<ConditionalEffect>,
right: List<ConditionalEffect>
): List<ConditionalEffect>
}