From d7cf5d79def258121c0f050d20172b2889831dc1 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Wed, 3 Jan 2018 16:50:35 +0100
Subject: [PATCH] add some @Nullables to java.util (IDEA-183875)

---
 java/jdkAnnotations/java/util/annotations.xml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/java/jdkAnnotations/java/util/annotations.xml b/java/jdkAnnotations/java/util/annotations.xml
index 5c926730bffa..aafc80c9d680 100644
--- a/java/jdkAnnotations/java/util/annotations.xml
+++ b/java/jdkAnnotations/java/util/annotations.xml
@@ -1371,6 +1371,12 @@
   <item name="java.util.Collections void swap(java.util.List&lt;?&gt;, int, int) 0">
     <annotation name="org.jetbrains.annotations.NotNull" />
   </item>
+  <item name='java.util.Deque E pollFirst()'>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
+  </item>
+  <item name='java.util.Deque E pollLast()'>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
+  </item>
   <item name="java.util.Deque java.util.Iterator&lt;E&gt; descendingIterator()">
     <annotation name="org.jetbrains.annotations.NotNull" />
   </item>
@@ -1612,6 +1618,7 @@
       <val name="source" val="&quot;this.values&quot;"/>
       <val name="sourceIsContainer" val="true" />
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Map V put(K, V) 0'>
     <annotation name='org.intellij.lang.annotations.Flow'>
@@ -1629,6 +1636,7 @@
     <annotation name='org.jetbrains.annotations.Contract'>
       <val name="mutates" val="&quot;this&quot;"/>
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Map V remove(java.lang.Object)'>
     <annotation name='org.jetbrains.annotations.Contract'>
@@ -1638,11 +1646,13 @@
       <val name="source" val="&quot;this.values&quot;"/>
       <val name="sourceIsContainer" val="true" />
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Map V replace(K, V)'>
     <annotation name='org.jetbrains.annotations.Contract'>
       <val name="mutates" val="&quot;this&quot;"/>
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Map boolean remove(java.lang.Object, java.lang.Object)'>
     <annotation name='org.jetbrains.annotations.Contract'>
@@ -1804,11 +1814,13 @@
     <annotation name='org.jetbrains.annotations.Contract'>
       <val name="pure" val="true"/>
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Queue E poll()'>
     <annotation name='org.jetbrains.annotations.Contract'>
       <val name="mutates" val="&quot;this&quot;"/>
     </annotation>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
   </item>
   <item name='java.util.Queue E remove()'>
     <annotation name='org.jetbrains.annotations.Contract'>