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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
37 lines
1.4 KiB
Dart
37 lines
1.4 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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/// Indexes a list of `enum` values by simple name.
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///
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/// In Dart enum names are prefixed with enum class name. For example, for
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/// `enum Vote { yea, nay }`, `Vote.yea.toString()` produces `"Vote.yea"`
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/// rather than just `"yea"` - the simple name. This class provides methods for
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/// getting and looking up by simple names.
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///
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/// Example:
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///
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/// enum Vote { yea, nay }
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/// final index = EnumIndex(Vote.values);
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/// index.lookupBySimpleName('yea'); // returns Vote.yea
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/// index.toSimpleName(Vote.nay); // returns 'nay'
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class EnumIndex<E> {
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/// Creates an index of [enumValues].
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EnumIndex(List<E> enumValues)
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: _nameToValue = Map<String, E>.fromIterable(enumValues, key: _getSimpleName),
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_valueToName = Map<E, String>.fromIterable(enumValues, value: _getSimpleName);
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final Map<String, E> _nameToValue;
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final Map<E, String> _valueToName;
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/// Given a [simpleName] finds the corresponding enum value.
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E lookupBySimpleName(String simpleName) => _nameToValue[simpleName]!;
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/// Returns the simple name for [enumValue].
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String toSimpleName(E enumValue) => _valueToName[enumValue]!;
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}
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String _getSimpleName(dynamic enumValue) {
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return enumValue.toString().split('.').last;
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}
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