org.jetbrains.kotlin.resolve.calls.inference.InferenceUtils.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

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

import org.jetbrains.kotlin.resolve.calls.inference.model.ConstraintStorage
import org.jetbrains.kotlin.types.model.*

fun ConstraintStorage.buildCurrentSubstitutor(
    context: TypeSystemInferenceExtensionContext,
    additionalBindings: Map
): TypeSubstitutorMarker {
    return context.typeSubstitutorByTypeConstructor(fixedTypeVariables.entries.associate { it.key to it.value } + additionalBindings)
}

fun ConstraintStorage.buildAbstractResultingSubstitutor(
    context: TypeSystemInferenceExtensionContext,
    transformTypeVariablesToErrorTypes: Boolean = true
): TypeSubstitutorMarker = with(context) {
    if (allTypeVariables.isEmpty()) return createEmptySubstitutor()

    val currentSubstitutorMap = fixedTypeVariables.entries.associate {
        it.key to it.value
    }
    val uninferredSubstitutorMap = if (transformTypeVariablesToErrorTypes) {
        notFixedTypeVariables.entries.associate { (freshTypeConstructor, typeVariable) ->
            freshTypeConstructor to context.createErrorTypeWithCustomConstructor(
                "Uninferred type",
                (typeVariable.typeVariable).freshTypeConstructor()
            )
        }
    } else {
        notFixedTypeVariables.entries.associate { (freshTypeConstructor, typeVariable) ->
            freshTypeConstructor to typeVariable.typeVariable.defaultType(this)
        }
    }
    return context.typeSubstitutorByTypeConstructor(currentSubstitutorMap + uninferredSubstitutorMap)
}

fun ConstraintStorage.buildNotFixedVariablesToNonSubtypableTypesSubstitutor(
    context: TypeSystemInferenceExtensionContext
): TypeSubstitutorMarker {
    return context.typeSubstitutorByTypeConstructor(
        notFixedTypeVariables.mapValues { context.createStubType(it.value.typeVariable) }
    )
}