// Copyright 2022 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.packages;

import com.google.errorprone.annotations.CheckReturnValue;

/** Static functionality shared by different implementations of the Globber interface. */
@CheckReturnValue
public final class GlobberUtils {

  private GlobberUtils() {}

  public static void throwBadGlobExceptionEmptyResult(
      String pattern, Globber.Operation globberOperation) throws Globber.BadGlobException {
    switch (globberOperation) {
      case SUBPACKAGES:
        throw new Globber.BadGlobException(
            "subpackages pattern '"
                + pattern
                + "' didn't match anything, but allow_empty is set to False (the default value)");
      default:
        throw new Globber.BadGlobException(
            "glob pattern '"
                + pattern
                + "' didn't match anything, but allow_empty is set to False "
                + "(the default value of allow_empty can be set with "
                + "--incompatible_disallow_empty_glob).");
    }
  }

  public static void throwBadGlobExceptionAllExcluded(Globber.Operation globberOperation)
      throws Globber.BadGlobException {
    switch (globberOperation) {
      case SUBPACKAGES:
        throw new Globber.BadGlobException(
            "all subpackages in subpackages() have been excluded, but allow_empty is"
                + " set to False ");
      default:
        throw new Globber.BadGlobException(
            "all files in the glob have been excluded, but allow_empty is set to False "
                + "(the default value of allow_empty can be set with "
                + "--incompatible_disallow_empty_glob).");
    }
  }
}