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https://github.com/LadybirdBrowser/ladybird.git
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2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
82 lines
3.6 KiB
C++
82 lines
3.6 KiB
C++
/*
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* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/DOMParserPrototype.h>
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/HTML/DOMParser.h>
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#include <LibWeb/HTML/Parser/HTMLParser.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/XML/XMLDocumentBuilder.h>
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namespace Web::HTML {
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WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMParser>> DOMParser::construct_impl(JS::Realm& realm)
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{
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return realm.heap().allocate<DOMParser>(realm, realm);
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}
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DOMParser::DOMParser(JS::Realm& realm)
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: PlatformObject(realm)
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{
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}
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DOMParser::~DOMParser() = default;
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JS::ThrowCompletionOr<void> DOMParser::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMParserPrototype>(realm, "DOMParser"));
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return {};
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}
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// https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring
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JS::NonnullGCPtr<DOM::Document> DOMParser::parse_from_string(DeprecatedString const& string, Bindings::DOMParserSupportedType type)
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{
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// 1. Let document be a new Document, whose content type is type and url is this's relevant global object's associated Document's URL.
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auto document = DOM::Document::create(realm(), verify_cast<HTML::Window>(relevant_global_object(*this)).associated_document().url());
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document->set_content_type(Bindings::idl_enum_to_deprecated_string(type));
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// 2. Switch on type:
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if (type == Bindings::DOMParserSupportedType::Text_Html) {
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// -> "text/html"
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// 1. Set document's type to "html".
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document->set_document_type(DOM::Document::Type::HTML);
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// 2. Create an HTML parser parser, associated with document.
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// 3. Place string into the input stream for parser. The encoding confidence is irrelevant.
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// FIXME: We don't have the concept of encoding confidence yet.
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auto parser = HTMLParser::create(*document, string, "UTF-8");
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// 4. Start parser and let it run until it has consumed all the characters just inserted into the input stream.
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// FIXME: This is to match the default URL. Instead, pass in this's relevant global object's associated Document's URL.
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parser->run("about:blank"sv);
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} else {
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// -> Otherwise
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// 1. Create an XML parser parse, associated with document, and with XML scripting support disabled.
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XML::Parser parser(string, { .resolve_external_resource = resolve_xml_resource });
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XMLDocumentBuilder builder { *document, XMLScriptingSupport::Disabled };
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// 2. Parse string using parser.
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auto result = parser.parse_with_listener(builder);
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// 3. If the previous step resulted in an XML well-formedness or XML namespace well-formedness error, then:
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if (result.is_error() || builder.has_error()) {
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// NOTE: The XML parsing can produce nodes before it hits an error, just remove them.
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// 1. Assert: document has no child nodes.
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document->remove_all_children(true);
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// 2. Let root be the result of creating an element given document, "parsererror", and "http://www.mozilla.org/newlayout/xml/parsererror.xml".
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auto root = DOM::create_element(*document, "parsererror", "http://www.mozilla.org/newlayout/xml/parsererror.xml");
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// FIXME: 3. Optionally, add attributes or children to root to describe the nature of the parsing error.
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// 4. Append root to document.
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MUST(document->append_child(*root));
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}
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}
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// 3. Return document.
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return document;
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}
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}
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