1 files changed, 51 insertions, 0 deletions
diff --git a/java/com/google/devtools/build/android/desugar/scan/KeepReference.java b/java/com/google/devtools/build/android/desugar/scan/KeepReference.java
new file mode 100644
index 0000000..bae3f38
--- /dev/null
+++ b/java/com/google/devtools/build/android/desugar/scan/KeepReference.java
@@ -0,0 +1,51 @@
+// Copyright 2018 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package com.google.devtools.build.android.desugar.scan;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.Immutable;
+
+@AutoValue
+@Immutable
+abstract class KeepReference {
+  public static KeepReference classReference(String internalName) {
+    checkArgument(!internalName.isEmpty());
+    return new AutoValue_KeepReference(internalName, "", "");
+  }
+
+  public static KeepReference memberReference(String internalName, String name, String desc) {
+    checkArgument(!internalName.isEmpty());
+    checkArgument(!name.isEmpty());
+    checkArgument(!desc.isEmpty());
+    return new AutoValue_KeepReference(internalName, name, desc);
+  }
+
+  public final boolean isMemberReference() {
+    return !name().isEmpty();
+  }
+
+  public final boolean isMethodReference() {
+    return desc().startsWith("(");
+  }
+
+  public final boolean isFieldReference() {
+    return isMemberReference() && !isMethodReference();
+  }
+
+  public abstract String internalName();
+  public abstract String name();
+  public abstract String desc();
+}