1 files changed, 61 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/syntax/SkylarkBuiltin.java b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkBuiltin.java
new file mode 100644
index 0000000000..a2f0d1b117
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/syntax/SkylarkBuiltin.java
@@ -0,0 +1,61 @@
+// Copyright 2014 Google Inc. 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.syntax;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+
+/**
+ * An annotation to mark built-in keyword argument methods accessible from Skylark.
+ */
+@Target({ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface SkylarkBuiltin {
+
+  String name();
+
+  String doc();
+
+  Param[] mandatoryParams() default {};
+
+  Param[] optionalParams() default {};
+
+  boolean hidden() default false;
+
+  Class<?> objectType() default Object.class;
+
+  Class<?> returnType() default Object.class;
+
+  boolean onlyLoadingPhase() default false;
+
+  /**
+   * An annotation for parameters of Skylark built-in functions.
+   */
+  @Retention(RetentionPolicy.RUNTIME)
+  public @interface Param {
+
+    String name();
+
+    String doc();
+
+    Class<?> type() default Object.class;
+
+    Class<?> generic1() default Object.class;
+
+    boolean callbackEnabled() default false;
+  }
+}