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/*
* Copyright 2000-2012 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 com.intellij.psi;
import com.intellij.psi.search.GlobalSearchScope;
import org.jetbrains.annotations.NotNull;
/**
* Used in Generify refactoring
*/
public class Bottom extends PsiType {
public static final Bottom BOTTOM = new Bottom();
private Bottom() {
super(PsiAnnotation.EMPTY_ARRAY);
}
@Override
public String getPresentableText() {
return "_";
}
@Override
public String getCanonicalText() {
return "_";
}
@Override
public String getInternalCanonicalText() {
return getCanonicalText();
}
@Override
public boolean isValid() {
return true;
}
@Override
public boolean equalsToText(String text) {
return text.equals("_");
}
public boolean equals(Object o) {
if (o instanceof Bottom) {
return true;
}
return false;
}
@Override
public <A> A accept(@NotNull PsiTypeVisitor<A> visitor) {
if (visitor instanceof PsiTypeVisitorEx) {
return ((PsiTypeVisitorEx<A>)visitor).visitBottom(this);
}
else {
return visitor.visitType(this);
}
}
@Override
@NotNull
public PsiType[] getSuperTypes() {
throw new UnsupportedOperationException();
}
@Override
public GlobalSearchScope getResolveScope() {
return null;
}
}
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