/*
* 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
class NotFunctor : AbstractUnaryFunctor() {
override fun invokeWithReturningEffects(list: List<ConditionalEffect>): List<ConditionalEffect> = list.mapNotNull {
val outcome = it.simpleEffect
// Outcome guaranteed to be Returns by AbstractSequentialUnaryFunctor, but value
// can be non-boolean in case of type-errors in the whole expression, like "foo(bar) && 1"
val returnValue = (outcome as ESReturns).value
when (returnValue) {
ESConstant.TRUE -> ConditionalEffect(it.condition, ESReturns(ESConstant.FALSE))
ESConstant.FALSE -> ConditionalEffect(it.condition, ESReturns(ESConstant.TRUE))
else -> null
}
}
}