org.jetbrains.jet.lang.resolve.calls.autocasts.DataFlowValue Maven / Gradle / Ivy
/*
* Copyright 2010-2013 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.jet.lang.resolve.calls.autocasts;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.lang.types.lang.KotlinBuiltIns;
import org.jetbrains.jet.lang.types.JetType;
public class DataFlowValue {
public static final DataFlowValue NULL = new DataFlowValue(new Object(), KotlinBuiltIns.getInstance().getNullableNothingType(), false, Nullability.NULL);
public static final DataFlowValue NULLABLE = new DataFlowValue(new Object(), KotlinBuiltIns.getInstance().getNullableAnyType(), false, Nullability.UNKNOWN);
private final boolean stableIdentifier;
private final JetType type;
private final Object id;
private final Nullability immanentNullability;
// Use DataFlowValueFactory
/*package*/ DataFlowValue(Object id, JetType type, boolean stableIdentifier, Nullability immanentNullability) {
this.stableIdentifier = stableIdentifier;
this.type = type;
this.id = id;
this.immanentNullability = immanentNullability;
}
@Nullable
public Object getId() {
return id;
}
@NotNull
public Nullability getImmanentNullability() {
return immanentNullability;
}
/**
* Stable identifier is a non-literal value that is statically known to be immutable
* @return
*/
public boolean isStableIdentifier() {
return stableIdentifier;
}
@NotNull
public JetType getType() {
return type;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
DataFlowValue that = (DataFlowValue) o;
if (stableIdentifier != that.stableIdentifier) return false;
if (id != null ? !id.equals(that.id) : that.id != null) return false;
if (type != null ? !type.equals(that.type) : that.type != null) return false;
return true;
}
@Override
public String toString() {
return (stableIdentifier ? "stable " : "unstable ") + (id == null ? null : id.toString()) + " " + immanentNullability;
}
@Override
public int hashCode() {
int result = (stableIdentifier ? 1 : 0);
result = 31 * result + (type != null ? type.hashCode() : 0);
result = 31 * result + (id != null ? id.hashCode() : 0);
return result;
}
}