org.jetbrains.kotlin.contracts.ContextInfoToDataFlowInfo.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
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.config.LanguageVersionSettings
import org.jetbrains.kotlin.contracts.description.expressions.ConstantReference
import org.jetbrains.kotlin.contracts.model.ESValue
import org.jetbrains.kotlin.contracts.model.MutableContextInfo
import org.jetbrains.kotlin.contracts.model.structure.ESConstant
import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowInfo
import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowInfoFactory
import org.jetbrains.kotlin.resolve.calls.smartcasts.DataFlowValue
import org.jetbrains.kotlin.resolve.calls.smartcasts.IdentifierInfo
fun MutableContextInfo.toDataFlowInfo(languageVersionSettings: LanguageVersionSettings, builtIns: KotlinBuiltIns): DataFlowInfo {
var resultingDataFlowInfo = DataFlowInfoFactory.EMPTY
extractDataFlowStatements(equalValues, builtIns) { leftDfv, rightValue ->
val rightDfv = rightValue.toDataFlowValue(builtIns)
if (rightDfv != null) {
resultingDataFlowInfo = resultingDataFlowInfo.equate(leftDfv, rightDfv, false, languageVersionSettings)
}
IntArray(42) { it }
}
extractDataFlowStatements(notEqualValues, builtIns) { leftDfv, rightValue ->
val rightDfv = rightValue.toDataFlowValue(builtIns)
if (rightDfv != null) {
resultingDataFlowInfo = resultingDataFlowInfo.disequate(leftDfv, rightDfv, languageVersionSettings)
}
}
extractDataFlowStatements(subtypes, builtIns) { leftDfv, type ->
resultingDataFlowInfo = resultingDataFlowInfo.establishSubtyping(leftDfv, type, languageVersionSettings)
}
return resultingDataFlowInfo
}
private inline fun extractDataFlowStatements(
dictionary: Map>,
builtIns: KotlinBuiltIns,
callback: (DataFlowValue, D) -> Unit
) {
for ((key, setOfValues) in dictionary) {
val leftDfv = key.toDataFlowValue(builtIns) ?: continue
setOfValues.forEach { callback(leftDfv, it) }
}
}
private fun ESValue.toDataFlowValue(builtIns: KotlinBuiltIns): DataFlowValue? = when (this) {
is ESDataFlowValue -> dataFlowValue
is ESConstant -> when (constantReference) {
ConstantReference.NULL -> DataFlowValue.nullValue(builtIns)
else -> DataFlowValue(IdentifierInfo.NO, type.toKotlinType(builtIns))
}
else -> null
}
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