blob: de16b87d282270d9d010b5b42869888b2ab12519 [file] [log] [blame]
/*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "third_party/blink/renderer/core/css/parser/css_parser_selector.h"
#include <memory>
#include <utility>
#include "base/memory/ptr_util.h"
#include "third_party/blink/renderer/core/css/css_selector_list.h"
namespace blink {
using RelationType = CSSSelector::RelationType;
using PseudoType = CSSSelector::PseudoType;
CSSParserSelector::CSSParserSelector()
: selector_(std::make_unique<CSSSelector>()) {}
CSSParserSelector::CSSParserSelector(const QualifiedName& tag_q_name,
bool is_implicit)
: selector_(std::make_unique<CSSSelector>(tag_q_name, is_implicit)) {}
CSSParserSelector::~CSSParserSelector() {
while (tag_history_) {
std::unique_ptr<CSSParserSelector> next =
std::move(tag_history_->tag_history_);
tag_history_ = std::move(next);
}
}
void CSSParserSelector::AdoptSelectorVector(
Vector<std::unique_ptr<CSSParserSelector>>& selector_vector) {
CSSSelectorList* selector_list = new CSSSelectorList(
CSSSelectorList::AdoptSelectorVector(selector_vector));
selector_->SetSelectorList(base::WrapUnique(selector_list));
}
void CSSParserSelector::SetSelectorList(
std::unique_ptr<CSSSelectorList> selector_list) {
selector_->SetSelectorList(std::move(selector_list));
}
bool CSSParserSelector::IsSimple() const {
if (selector_->SelectorList() ||
selector_->Match() == CSSSelector::kPseudoElement)
return false;
if (!tag_history_)
return true;
if (selector_->Match() == CSSSelector::kTag) {
// We can't check against anyQName() here because namespace may not be
// g_null_atom.
// Example:
// @namespace "http://www.w3.org/2000/svg";
// svg:not(:root) { ...
if (selector_->TagQName().LocalName() ==
CSSSelector::UniversalSelectorAtom())
return tag_history_->IsSimple();
}
return false;
}
void CSSParserSelector::AppendTagHistory(
CSSSelector::RelationType relation,
std::unique_ptr<CSSParserSelector> selector) {
CSSParserSelector* end = this;
while (end->TagHistory())
end = end->TagHistory();
end->SetRelation(relation);
end->SetTagHistory(std::move(selector));
}
std::unique_ptr<CSSParserSelector> CSSParserSelector::ReleaseTagHistory() {
SetRelation(CSSSelector::kSubSelector);
return std::move(tag_history_);
}
void CSSParserSelector::PrependTagSelector(const QualifiedName& tag_q_name,
bool is_implicit) {
std::unique_ptr<CSSParserSelector> second = CSSParserSelector::Create();
second->selector_ = std::move(selector_);
second->tag_history_ = std::move(tag_history_);
tag_history_ = std::move(second);
selector_ = std::make_unique<CSSSelector>(tag_q_name, is_implicit);
}
bool CSSParserSelector::IsHostPseudoSelector() const {
return GetPseudoType() == CSSSelector::kPseudoHost ||
GetPseudoType() == CSSSelector::kPseudoHostContext;
}
RelationType CSSParserSelector::GetImplicitShadowCombinatorForMatching() const {
switch (GetPseudoType()) {
case PseudoType::kPseudoSlotted:
return RelationType::kShadowSlot;
case PseudoType::kPseudoWebKitCustomElement:
case PseudoType::kPseudoBlinkInternalElement:
case PseudoType::kPseudoCue:
case PseudoType::kPseudoPlaceholder:
case PseudoType::kPseudoShadow:
return RelationType::kShadowPseudo;
case PseudoType::kPseudoPart:
return RelationType::kShadowPart;
default:
return RelationType::kSubSelector;
}
}
bool CSSParserSelector::NeedsImplicitShadowCombinatorForMatching() const {
return GetImplicitShadowCombinatorForMatching() != RelationType::kSubSelector;
}
} // namespace blink