org.jetbrains.kotlin.contracts.model.Functor.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
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.contracts.model.visitors.Reducer
import org.jetbrains.kotlin.resolve.calls.inference.components.EmptySubstitutor
import org.jetbrains.kotlin.resolve.calls.inference.components.NewTypeSubstitutor
/**
* An abstraction of effect-generating nature of some computation.
*
* One can think of Functor as of adjoint to function declaration, responsible
* for generating effects. It's [invokeWithArguments] method roughly corresponds
* to call of corresponding function, but instead of taking values and returning
* values, it takes effects and returns effects.
*/
interface Functor {
fun invokeWithArguments(arguments: List, typeSubstitution: ESTypeSubstitution, reducer: Reducer): List
}
abstract class AbstractFunctor : Functor {
override fun invokeWithArguments(arguments: List, typeSubstitution: ESTypeSubstitution, reducer: Reducer): List =
reducer.reduceEffects(doInvocation(arguments, typeSubstitution, reducer))
protected abstract fun doInvocation(
arguments: List,
typeSubstitution: ESTypeSubstitution,
reducer: Reducer
): List
}
class ESTypeSubstitution(
val substitutor: NewTypeSubstitutor,
val builtIns: KotlinBuiltIns
) {
companion object {
fun empty(builtIns: KotlinBuiltIns): ESTypeSubstitution {
return ESTypeSubstitution(EmptySubstitutor, builtIns)
}
}
}