1 files changed, 19 insertions, 0 deletions
diff --git a/src/Analysis/PsiAPI.kt b/src/Analysis/PsiAPI.kt
new file mode 100644
index 00000000..2282cd1d
--- /dev/null
+++ b/src/Analysis/PsiAPI.kt
@@ -0,0 +1,19 @@
+package org.jetbrains.dokka
+
+import com.intellij.psi.*
+import kotlin.support.*
+
+fun PsiElement.previousSiblings(): Stream<PsiElement> {
+    var element: PsiElement? = this
+    return object : Stream<PsiElement> {
+        override fun iterator(): Iterator<PsiElement> = object : AbstractIterator<PsiElement>() {
+            override fun computeNext() {
+                element = element?.getPrevSibling()
+                if (element == null)
+                    done()
+                else
+                    setNext(element!!)
+            }
+        }
+    }
+}