1 files changed, 64 insertions, 0 deletions
diff --git a/java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/iterators/DocValuesIterator.java b/java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/iterators/DocValuesIterator.java
new file mode 100644
index 000000000000..c1323abd0951
--- /dev/null
+++ b/java/structuralsearch-java/src/com/intellij/structuralsearch/impl/matcher/iterators/DocValuesIterator.java
@@ -0,0 +1,64 @@
+package com.intellij.structuralsearch.impl.matcher.iterators;
+
+import com.intellij.dupLocator.iterators.NodeIterator;
+import com.intellij.psi.JavaDocTokenType;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.tree.IElementType;
+import com.intellij.psi.javadoc.PsiDocToken;
+import com.intellij.psi.javadoc.PsiDocTagValue;
+
+import java.util.ArrayList;
+
+/**
+ * Iterates over java doc values tag
+ */
+public class DocValuesIterator extends NodeIterator {
+  private int index;
+  private final ArrayList<PsiElement> tokens = new ArrayList<PsiElement>(2);
+  private static final IElementType tokenType = JavaDocTokenType.DOC_COMMENT_DATA;
+
+  public DocValuesIterator(PsiElement start) {
+    for(PsiElement e = start; e != null; e = e.getNextSibling()) {
+      if (e instanceof PsiDocTagValue) tokens.add(e);
+      else if (e instanceof PsiDocToken && ((PsiDocToken)e).getTokenType() == tokenType) {
+        tokens.add(e);
+        e = advanceToNext(e);
+      }
+    }
+  }
+
+  // since doctag value may be inside doc comment we specially skip that nodes from list
+  static PsiElement advanceToNext(PsiElement e) {
+    PsiElement nextSibling = e.getNextSibling();
+    if (nextSibling instanceof PsiDocTagValue) e = nextSibling;
+
+    nextSibling = e.getNextSibling();
+
+    if (nextSibling instanceof PsiDocToken &&
+        ((PsiDocToken)nextSibling).getTokenType() == tokenType
+       ) {
+      e = nextSibling;
+    }
+    return e;
+  }
+
+  public boolean hasNext() {
+    return index >=0 && index < tokens.size();
+  }
+
+  public PsiElement current() {
+    return hasNext() ? tokens.get(index) : null;
+  }
+
+  public void advance() {
+    if (index < tokens.size()) ++ index;
+  }
+
+  public void rewind() {
+    if (index >= 0) --index;
+  }
+
+  public void reset() {
+    index = 0;
+  }
+}