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/*
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/Parser/Parser.h>
#include <LibWeb/CSS/Supports.h>
namespace Web::CSS {
Supports::Supports(NonnullOwnPtr<Condition>&& condition)
: m_condition(move(condition))
{
m_matches = m_condition->evaluate();
}
bool Supports::Condition::evaluate() const
{
switch (type) {
case Type::Not:
return !children.first().evaluate();
case Type::And:
for (auto& child : children) {
if (!child.evaluate())
return false;
}
return true;
case Type::Or:
for (auto& child : children) {
if (child.evaluate())
return true;
}
return false;
}
VERIFY_NOT_REACHED();
}
bool Supports::InParens::evaluate() const
{
return value.visit(
[&](NonnullOwnPtr<Condition> const& condition) {
return condition->evaluate();
},
[&](Feature const& feature) {
return feature.evaluate();
},
[&](GeneralEnclosed const&) {
return false;
});
}
bool Supports::Declaration::evaluate() const
{
auto style_property = parse_css_supports_condition({}, declaration);
return style_property.has_value();
}
bool Supports::Selector::evaluate() const
{
auto style_property = parse_selector({}, selector);
return style_property.has_value();
}
bool Supports::Feature::evaluate() const
{
return value.visit(
[&](Declaration const& declaration) {
return declaration.evaluate();
},
[&](Selector const& selector) {
return selector.evaluate();
});
}
ErrorOr<String> Supports::Declaration::to_string() const
{
return String::formatted("({})", declaration);
}
ErrorOr<String> Supports::Selector::to_string() const
{
return String::formatted("selector({})", selector);
}
ErrorOr<String> Supports::Feature::to_string() const
{
return value.visit([](auto& it) { return it.to_string(); });
}
ErrorOr<String> Supports::InParens::to_string() const
{
return value.visit(
[](NonnullOwnPtr<Condition> const& condition) -> ErrorOr<String> { return String::formatted("({})", TRY(condition->to_string())); },
[](Supports::Feature const& it) -> ErrorOr<String> { return it.to_string(); },
[](GeneralEnclosed const& it) -> ErrorOr<String> { return it.to_string(); });
}
ErrorOr<String> Supports::Condition::to_string() const
{
switch (type) {
case Type::Not:
return String::formatted("not {}", TRY(children.first().to_string()));
case Type::And:
return String::join(" and "sv, children);
case Type::Or:
return String::join(" or "sv, children);
}
VERIFY_NOT_REACHED();
}
ErrorOr<String> Supports::to_string() const
{
return m_condition->to_string();
}
}
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