1 files changed, 44 insertions, 0 deletions
diff --git a/plugins/structuralsearch/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java b/plugins/structuralsearch/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java
new file mode 100644
index 000000000000..4416b8b7db24
--- /dev/null
+++ b/plugins/structuralsearch/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java
@@ -0,0 +1,44 @@
+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;
+  }
+}