Paul Berry
f4ff72aadd
This change migrates the analyzer_utilities package to use the new constructor declaration syntax, described in https://github.com/dart-lang/language/blob/main/accepted/future-releases/primary-constructors/feature-specification.md#abbreviations-of-in-body-constructor-declarations. This change was performed in an automated fashion, by (a) bumping the packages' SDK constraints to `3.13.0-0`, (b) enabling the lints `unnecessary_type_name_in_constructor` and `unnecessary_const_in_enum_constructor`, (c) fixing the resulting lint failures using `dart fix`, and then (d) reformatting the affected files. To ease code review, I've reverted unrelated formatting changes. Since this change requires bumping SDK constaints to `3.13.0-0`, it was only performed on packages that are *not* published on pub. (Packages that *are* published on pub should remain on lower language versions until at least after the stable version of 3.13 is released, so that we don't block users on the stable channel from receiving updates to those packages.) Change-Id: Ib9564fe588b1118f7e810bd39ff9c6576a6a6964 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/505066 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Samuel Rawlins <srawlins@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
106 lines
2.4 KiB
Dart
106 lines
2.4 KiB
Dart
// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// A lightweight DOM model.
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library;
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import 'dart:convert';
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const _htmlEscape = HtmlEscape(HtmlEscapeMode.element);
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class Document extends Element {
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static const Set<String> selfClosing = {'br', 'link', 'meta'};
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new() : super.tag('');
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/// Return the full HTML text for the document.
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String get outerHtml {
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var buf = StringBuffer();
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void emitNode(Node node) {
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if (node is Element) {
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buf.write('<${node.name}');
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for (var attr in node.attributes.keys) {
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buf.write(' $attr="${node.attributes[attr]}"');
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}
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if (node.nodes.length == 1 &&
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node.nodes.first is Text &&
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!(node.nodes.first as Text).text.contains('\n')) {
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buf.write('>');
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var text = node.nodes.first as Text;
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buf.write(_htmlEscape.convert(text.text));
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buf.write('</${node.name}>');
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} else {
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buf.write('>');
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for (var child in node.nodes) {
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emitNode(child);
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}
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if (!selfClosing.contains(node.name)) {
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buf.write('</${node.name}>');
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}
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}
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} else if (node is Text) {
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buf.write(_htmlEscape.convert(node.text));
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} else {
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throw 'unknown node type: $node';
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}
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}
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buf.write('<!DOCTYPE html>');
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for (var child in nodes) {
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emitNode(child);
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}
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buf.writeln();
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return buf.toString();
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}
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}
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class Element extends Node {
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final String name;
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Map<String, String> attributes = {};
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new tag(this.name);
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List<Element> get children => nodes.whereType<Element>().toList();
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List<String> get classes {
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var classes = attributes['class'];
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if (classes != null) {
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return classes.split(' ').toList();
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} else {
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return const [];
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}
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}
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void append(Node child) {
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child.parent = this;
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nodes.add(child);
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}
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}
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abstract class Node {
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Element? parent;
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final List<Node> nodes = [];
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}
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class Text extends Node {
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static final RegExp tagRegex = RegExp(r'<[^>]+>');
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final String text;
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new(this.text);
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@override
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List<Node> get nodes => const [];
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String get textRemoveTags {
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return text.replaceAll(tagRegex, '');
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}
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}
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