1 files changed, 13 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java b/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
index d74056516f..f6fcc27ef5 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/engine/FunctionExpression.java
@@ -36,6 +36,14 @@ public class FunctionExpression extends QueryExpression {
     this.args = ImmutableList.copyOf(args);
   }
 
+  public QueryFunction getFunction() {
+    return function;
+  }
+
+  public List<Argument> getArgs() {
+    return args;
+  }
+
   @Override
   public <T> void eval(QueryEnvironment<T> env, Callback<T> callback)
       throws QueryException, InterruptedException {
@@ -52,6 +60,11 @@ public class FunctionExpression extends QueryExpression {
   }
 
   @Override
+  public QueryExpression getMapped(QueryExpressionMapper mapper) {
+    return mapper.map(this);
+  }
+
+  @Override
   public String toString() {
     return function.getName() +
         "(" + Joiner.on(", ").join(Iterables.transform(args, Functions.toStringFunction())) + ")";