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editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java

Index: editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java
diff --git a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java
index e4d3026238b3a53410f87ef42b4ca7137c25d884..3e6936b9851efed6bb85df59f8249b9f007b45e6 100644
--- a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java
+++ b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/processor/GuavaSemanticProcessor.java
@@ -14,19 +14,23 @@
 
 package com.google.dart.java2dart.processor;
 
+import com.google.dart.engine.ast.ASTNode;
 import com.google.dart.engine.ast.CompilationUnit;
 import com.google.dart.engine.ast.Expression;
 import com.google.dart.engine.ast.MethodInvocation;
+import com.google.dart.engine.ast.PrefixExpression;
 import com.google.dart.engine.ast.visitor.GeneralizingASTVisitor;
 import com.google.dart.engine.scanner.Keyword;
 import com.google.dart.engine.scanner.TokenType;
 import com.google.dart.java2dart.Context;
 
 import static com.google.dart.java2dart.util.ASTFactory.binaryExpression;
+import static com.google.dart.java2dart.util.ASTFactory.identifier;
 import static com.google.dart.java2dart.util.ASTFactory.instanceCreationExpression;
 import static com.google.dart.java2dart.util.ASTFactory.listLiteral;
 import static com.google.dart.java2dart.util.ASTFactory.mapLiteral;
 import static com.google.dart.java2dart.util.ASTFactory.typeName;
+import static com.google.dart.java2dart.util.TokenFactory.token;
 
 import java.util.List;
 
@@ -34,6 +38,14 @@ import java.util.List;
  * {@link SemanticProcessor} for Google Guava.
  */
 public class GuavaSemanticProcessor extends SemanticProcessor {
+  private static boolean isNegationParent(ASTNode node) {
+    if (node.getParent() instanceof PrefixExpression) {
+      PrefixExpression prefixExpression = (PrefixExpression) node.getParent();
+      return prefixExpression.getOperator().getType() == TokenType.BANG;
+    }
+    return false;
+  }
+
   public GuavaSemanticProcessor(Context context) {
     super(context);
   }
@@ -46,7 +58,18 @@ public class GuavaSemanticProcessor extends SemanticProcessor {
         super.visitMethodInvocation(node);
         List<Expression> args = node.getArgumentList().getArguments();
         if (isMethodInClass(node, "equal", "com.google.common.base.Objects")) {
-          replaceNode(node, binaryExpression(args.get(0), TokenType.EQ_EQ, args.get(1)));
+          ASTNode toReplace = node;
+          TokenType operator = TokenType.EQ_EQ;
+          if (isNegationParent(node)) {
+            operator = TokenType.BANG_EQ;
+            toReplace = node.getParent();
+          }
+          replaceNode(toReplace, binaryExpression(args.get(0), operator, args.get(1)));
+          return null;
+        }
+        if (isMethodInClass(node, "hashCode", "com.google.common.base.Objects")) {
+          replaceNode(node.getTarget(), identifier("JavaArrays"));
+          node.getMethodName().setToken(token("makeHashCode"));
           return null;
         }
         if (isMethodInClass(node, "of", "com.google.common.collect.ImmutableMap")) {
@@ -57,10 +80,19 @@ public class GuavaSemanticProcessor extends SemanticProcessor {
           replaceNode(node, listLiteral());
           return null;
         }
+        if (isMethodInClass(node, "newLinkedList", "com.google.common.collect.Lists")) {
+          replaceNode(node, instanceCreationExpression(Keyword.NEW, typeName("Queue")));
+          return null;
+        }
         if (isMethodInClass(node, "newHashMap", "com.google.common.collect.Maps")) {
           replaceNode(node, mapLiteral());
           return null;
         }
+        if (isMethodInClass(node, "difference", "com.google.common.collect.Sets")) {
+          node.setTarget(args.get(0));
+          args.remove(0);
+          return null;
+        }
         if (isMethodInClass(node, "newHashSet", "com.google.common.collect.Sets")) {
           replaceNode(node, instanceCreationExpression(Keyword.NEW, typeName("Set")));
           return null;