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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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