// Copyright 2020 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.docgen.annot;

import com.google.common.base.Ascii;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * An annotation applied to a class that indicates to docgen that the class's {@link
 * net.starlark.java.annot.StarlarkMethod}-annotated methods should be included in docgen's output
 * as standalone global functions.
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface GlobalMethods {
  /** The environment in which the global methods in the annotated class are available. */
  enum Environment {
    BUILD("BUILD files"),
    WORKSPACE("WORKSPACE files"),
    MODULE("MODULE.bazel files"),
    BZL(".bzl files"),
    ALL("All Starlark files");

    private final String title;

    Environment(String title) {
      this.title = title;
    }

    public String getTitle() {
      return title;
    }

    public String getPath() {
      return Ascii.toLowerCase(name());
    }
  }

  Environment[] environment();
}