org.jetbrains.kotlin.contracts.model.functors.IsFunctor.kt Maven / Gradle / Ivy
/*
* 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.*
import org.jetbrains.kotlin.contracts.model.structure.ESConstants
import org.jetbrains.kotlin.contracts.model.structure.ESIs
import org.jetbrains.kotlin.contracts.model.structure.ESReturns
import org.jetbrains.kotlin.contracts.model.structure.ESType
import org.jetbrains.kotlin.contracts.model.visitors.Reducer
class IsFunctor(val type: ESType, val isNegated: Boolean) : AbstractFunctor() {
override fun doInvocation(arguments: List, typeSubstitution: ESTypeSubstitution, reducer: Reducer): List {
assert(arguments.size == 1) { "Wrong size of arguments list for Unary operator: expected 1, got ${arguments.size}" }
return invokeWithArguments(arguments[0], typeSubstitution)
}
fun invokeWithArguments(arg: Computation, typeSubstitution: ESTypeSubstitution): List {
return if (arg is ESValue)
invokeWithValue(arg, typeSubstitution)
else
emptyList()
}
private fun invokeWithValue(value: ESValue, typeSubstitution: ESTypeSubstitution): List {
val substitutedType = typeSubstitution[type] ?: type
val trueIs = ESIs(value, IsFunctor(substitutedType, isNegated))
val falseIs = ESIs(value, IsFunctor(substitutedType, isNegated.not()))
val trueResult = ConditionalEffect(trueIs, ESReturns(ESConstants.trueValue))
val falseResult = ConditionalEffect(falseIs, ESReturns(ESConstants.falseValue))
return listOf(trueResult, falseResult)
}
}