mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-04 18:23:39 +00:00
7aa0165fe7
The HTML tokenizer specification says that we're supposed to do this when leaving the Attribute name or when emitting the token, as appropriate. Hopefully 'as appropriate' can mean only when emitting the token, as that's the easiest place to insert this logic without complicating the tokenizer any more.
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/HashTable.h>
|
|
#include <LibWeb/HTML/Parser/HTMLToken.h>
|
|
|
|
namespace Web::HTML {
|
|
|
|
String HTMLToken::to_string() const
|
|
{
|
|
StringBuilder builder;
|
|
|
|
switch (type()) {
|
|
case HTMLToken::Type::DOCTYPE:
|
|
builder.append("DOCTYPE"sv);
|
|
builder.append(" { name: '"sv);
|
|
builder.append(doctype_data().name);
|
|
builder.append("' }"sv);
|
|
break;
|
|
case HTMLToken::Type::StartTag:
|
|
builder.append("StartTag"sv);
|
|
break;
|
|
case HTMLToken::Type::EndTag:
|
|
builder.append("EndTag"sv);
|
|
break;
|
|
case HTMLToken::Type::Comment:
|
|
builder.append("Comment"sv);
|
|
break;
|
|
case HTMLToken::Type::Character:
|
|
builder.append("Character"sv);
|
|
break;
|
|
case HTMLToken::Type::EndOfFile:
|
|
builder.append("EndOfFile"sv);
|
|
break;
|
|
case HTMLToken::Type::Invalid:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
if (type() == HTMLToken::Type::StartTag || type() == HTMLToken::Type::EndTag) {
|
|
builder.append(" { name: '"sv);
|
|
builder.append(tag_name());
|
|
builder.append("', { "sv);
|
|
for_each_attribute([&](auto& attribute) {
|
|
builder.append(attribute.local_name);
|
|
builder.append("=\""sv);
|
|
builder.append(attribute.value);
|
|
builder.append("\" "sv);
|
|
return IterationDecision::Continue;
|
|
});
|
|
builder.append("} }"sv);
|
|
}
|
|
|
|
if (is_comment()) {
|
|
builder.append(" { data: '"sv);
|
|
builder.append(comment());
|
|
builder.append("' }"sv);
|
|
}
|
|
|
|
if (is_character()) {
|
|
builder.append(" { data: '"sv);
|
|
builder.append_code_point(code_point());
|
|
builder.append("' }"sv);
|
|
}
|
|
|
|
if (type() == HTMLToken::Type::Character) {
|
|
builder.appendff("@{}:{}", m_start_position.line, m_start_position.column);
|
|
} else {
|
|
builder.appendff("@{}:{}-{}:{}", m_start_position.line, m_start_position.column, m_end_position.line, m_end_position.column);
|
|
}
|
|
|
|
return MUST(builder.to_string());
|
|
}
|
|
|
|
void HTMLToken::normalize_attributes()
|
|
{
|
|
// From AttributeNameState: https://html.spec.whatwg.org/multipage/parsing.html#attribute-name-state
|
|
//
|
|
// When the user agent leaves the attribute name state (and before emitting the tag token, if appropriate),
|
|
// the complete attribute's name must be compared to the other attributes on the same token;
|
|
// if there is already an attribute on the token with the exact same name, then this is a duplicate-attribute
|
|
// parse error and the new attribute must be removed from the token.
|
|
|
|
// NOTE: If an attribute is so removed from a token, it, and the value that gets associated with it, if any,
|
|
// are never subsequently used by the parser, and are therefore effectively discarded. Removing the attribute
|
|
// in this way does not change its status as the "current attribute" for the purposes of the tokenizer, however.
|
|
|
|
HashTable<FlyString> seen_attributes;
|
|
auto* ptr = tag_attributes();
|
|
if (!ptr)
|
|
return;
|
|
auto& tag_attributes = *ptr;
|
|
for (size_t i = 0; i < tag_attributes.size(); ++i) {
|
|
auto& attribute = tag_attributes[i];
|
|
if (seen_attributes.set(attribute.local_name, AK::HashSetExistingEntryBehavior::Keep) == AK::HashSetResult::KeptExistingEntry) {
|
|
// This is a duplicate attribute, remove it.
|
|
tag_attributes.remove(i);
|
|
--i;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|