Un-hardcode the names of some Python implicit attributes ($python_precompile, etc.)

--
MOS_MIGRATED_REVID=106352835

1 files changed, 22 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/python/PythonImplicitAttributes.java b/src/main/java/com/google/devtools/build/lib/rules/python/PythonImplicitAttributes.java
new file mode 100644
index 0000000000..99928d1d9e
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/python/PythonImplicitAttributes.java
@@ -0,0 +1,22 @@
+// Copyright 2015 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.lib.rules.python;
+
+/**
+ * Various implicit attributes names that Python rules use, such as the Python proto runtime.
+ */
+public class PythonImplicitAttributes {
+  public static final String DEFAULT_PYTHON_PRECOMPILE_ATTRIBUTE = "$python_precompile";
+  public static final String DEFAULT_HOST_PYTHON2_RUNTIME_ATTRIBUTE = ":host_python2_runtime";
+}