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package com.intellij.structuralsearch.impl.matcher.filters;
import com.intellij.dupLocator.util.NodeFilter;
import com.intellij.psi.*;
/**
* Tree filter for searching symbols ('T)
*/
public class SymbolNodeFilter extends JavaElementVisitor implements NodeFilter {
private boolean result;
@Override public void visitExpression(PsiExpression expr) {
result = true;
}
@Override public void visitLiteralExpression(PsiLiteralExpression psiLiteralExpression) {
result = true;
}
@Override public void visitReferenceExpression(PsiReferenceExpression psiReferenceExpression) {
result = true;
}
@Override public void visitAnnotation(final PsiAnnotation annotation) {
result = true;
}
@Override public void visitAnnotationMethod(final PsiAnnotationMethod method) {
result = true;
}
@Override public void visitNameValuePair(final PsiNameValuePair pair) {
result = true;
}
@Override public void visitMethod(PsiMethod psiMethod) {
result = true;
}
@Override public void visitClass(PsiClass psiClass) {
result = true;
}
@Override public void visitReferenceElement(PsiJavaCodeReferenceElement psiJavaCodeReferenceElement) {
result = true;
}
@Override public void visitVariable(PsiVariable psiVar) {
result = true;
}
@Override public void visitTypeParameter(PsiTypeParameter psiTypeParameter) {
result = true;
}
private static class NodeFilterHolder {
private static final NodeFilter instance = new SymbolNodeFilter();
}
public static NodeFilter getInstance() {
return NodeFilterHolder.instance;
}
private SymbolNodeFilter() {
}
public boolean accepts(PsiElement element) {
result = false;
if (element!=null) element.accept(this);
return result;
}
}
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