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https://github.com/pese-git/cherrypick.git
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50 lines
1.9 KiB
Dart
50 lines
1.9 KiB
Dart
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//
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// Copyright 2021 Sergey Penkovsky (sergey.penkovsky@gmail.com)
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import 'package:analyzer/dart/element/element.dart';
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///
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/// Утилиты для разбора аннотаций методов и параметров.
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/// Позволяют найти @named() и @singleton() у метода/параметра.
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///
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class MetadataUtils {
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/// Проверяет: есть ли среди аннотаций метка, имя которой содержит [typeName]
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/// (регистр не учитывается)
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static bool anyMeta(List<ElementAnnotation> meta, String typeName) {
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return meta.any((m) =>
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m
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.computeConstantValue()
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?.type
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?.getDisplayString()
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.toLowerCase()
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.contains(typeName.toLowerCase()) ??
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false);
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}
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/// Находит значение из аннотации @named('значение').
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/// Возвращает строку значения, если аннотация присутствует; иначе null.
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static String? getNamedValue(List<ElementAnnotation> meta) {
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for (final m in meta) {
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final cv = m.computeConstantValue();
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final typeStr = cv?.type?.getDisplayString().toLowerCase();
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if (typeStr?.contains('named') ?? false) {
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return cv?.getField('value')?.toStringValue();
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}
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}
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return null;
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}
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}
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