packages/flutter_tools/lib/src/base/common.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/// Throw a specialized exception for expected situations
/// where the tool should exit with a clear message to the user
/// and no stack trace unless the --verbose option is specified.
/// For example: network errors.
Never throwToolExit(String? message, { int? exitCode }) {
  throw ToolExit(message, exitCode: exitCode);
}

/// Specialized exception for expected situations
/// where the tool should exit with a clear message to the user
/// and no stack trace unless the --verbose option is specified.
/// For example: network errors.
class ToolExit implements Exception {
  ToolExit(this.message, { this.exitCode });

  final String? message;
  final int? exitCode;

  @override
  String toString() => 'Exception: $message'; // TODO(ianh): Really this should say "Error".
}