diff options
Diffstat (limited to 'java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java')
-rw-r--r-- | java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java b/java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/filters/TypedSymbolNodeFilter.java new file mode 100644 index 000000000000..4416b8b7db24 --- /dev/null +++ b/java/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; + } +} |