| package com.intellij.structuralsearch.impl.matcher.filters; |
| |
| import com.intellij.dupLocator.util.NodeFilter; |
| import com.intellij.psi.*; |
| |
| /** |
| * Filter for typed symbols |
| */ |
| public class TypedSymbolNodeFilter extends JavaElementVisitor implements NodeFilter { |
| private boolean result; |
| |
| @Override public void visitMethod(PsiMethod psiMethod) { |
| result = psiMethod.hasTypeParameters(); |
| } |
| |
| @Override public void visitClass(PsiClass psiClass) { |
| result = psiClass.hasTypeParameters(); |
| } |
| |
| @Override public void visitReferenceElement(PsiJavaCodeReferenceElement psiJavaCodeReferenceElement) { |
| result = psiJavaCodeReferenceElement.getParameterList().getTypeParameterElements().length > 0; |
| } |
| |
| @Override public void visitTypeParameter(PsiTypeParameter parameter) { |
| // we need this since TypeParameter instanceof PsiClass (?) |
| } |
| |
| private static class NodeFilterHolder { |
| private static final NodeFilter instance = new TypedSymbolNodeFilter(); |
| } |
| |
| public static NodeFilter getInstance() { |
| return NodeFilterHolder.instance; |
| } |
| |
| private TypedSymbolNodeFilter() { |
| } |
| |
| public boolean accepts(PsiElement element) { |
| result = false; |
| if (element!=null) element.accept(this); |
| return result; |
| } |
| } |