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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/ntp_snippets/category.h"
#include "base/check_op.h"
namespace ntp_snippets {
// static
Category Category::FromKnownCategory(KnownCategories known_category) {
return FromIDValue(static_cast<int>(known_category));
}
// static
Category Category::FromRemoteCategory(int remote_category) {
DCHECK_GT(remote_category, 0);
return Category(static_cast<int>(KnownCategories::REMOTE_CATEGORIES_OFFSET) +
remote_category);
}
// static
Category Category::FromIDValue(int id) {
DCHECK(IsValidIDValue(id)) << id
<< " is not a valid category ID. This may have "
"been caused by removal of a local "
"KnownCategory.";
return Category(id);
}
// static
bool Category::IsValidIDValue(int id) {
return (id >= 0) &&
((id < static_cast<int>(KnownCategories::LOCAL_CATEGORIES_COUNT) ||
id > static_cast<int>(KnownCategories::REMOTE_CATEGORIES_OFFSET)));
}
Category::Category(int id) : id_(id) {}
int Category::remote_id() const {
DCHECK_GT(id_, static_cast<int>(KnownCategories::REMOTE_CATEGORIES_OFFSET));
return id_ - static_cast<int>(KnownCategories::REMOTE_CATEGORIES_OFFSET);
}
bool Category::IsKnownCategory(KnownCategories known_category) const {
DCHECK_NE(known_category, KnownCategories::LOCAL_CATEGORIES_COUNT);
DCHECK_NE(known_category, KnownCategories::REMOTE_CATEGORIES_OFFSET);
return id_ == static_cast<int>(known_category);
}
bool operator==(const Category& left, const Category& right) {
return left.id() == right.id();
}
bool operator!=(const Category& left, const Category& right) {
return !(left == right);
}
bool Category::CompareByID::operator()(const Category& left,
const Category& right) const {
return left.id() < right.id();
}
std::ostream& operator<<(std::ostream& os, const Category& obj) {
os << obj.id();
return os;
}
} // namespace ntp_snippets
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