90 lines
2.2 KiB
Dart
90 lines
2.2 KiB
Dart
/*
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* Copyright (c) 2024-2025 Fabian Freund.
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*
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* This file is part of WebLibre
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* (see https://weblibre.eu).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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const barewordConcat = ' ';
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sealed class Bareword {
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final String word;
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@override
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int get hashCode => word.hashCode;
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Bareword(String word) : word = word.replaceAll('"', '""');
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@override
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bool operator ==(Object other) {
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if (other is Bareword) {
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return word == other.word;
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}
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return false;
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}
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JoinedBareword join(Bareword other) {
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return JoinedBareword(other.word, this);
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}
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}
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final class SimpleBareword extends Bareword {
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SimpleBareword(super.word);
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@override
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String toString() => word;
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}
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final class EnclosedBareword extends Bareword {
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EnclosedBareword(super.word);
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@override
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String toString() {
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return '"$word"';
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}
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}
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final class JoinedBareword extends Bareword {
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final Bareword parent;
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JoinedBareword(super.bareword, this.parent);
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bool hasDependency(Bareword other) {
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if (parent is JoinedBareword) {
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return (parent as JoinedBareword).hasDependency(other);
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} else {
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return parent == other;
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}
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}
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Iterable<Bareword> get dependencies {
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final depencies = <Bareword>[parent];
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while (depencies.last is JoinedBareword) {
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depencies.add((depencies.last as JoinedBareword).parent);
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}
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return depencies.reversed;
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}
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@override
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String toString() {
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final deps = dependencies
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.map((bareword) => bareword.toString())
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.join(barewordConcat);
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return '"$deps$barewordConcat$word"';
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}
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}
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