chromium/components/language/content/browser/ulp_language_code_locator/ulp_language_code_locator.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/language/content/browser/ulp_language_code_locator/ulp_language_code_locator.h"

#include <memory>

#include "base/values.h"
#include "components/language/content/browser/ulp_language_code_locator/s2langquadtree.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "third_party/s2cellid/src/s2/s2cellid.h"
#include "third_party/s2cellid/src/s2/s2latlng.h"

namespace {

constexpr char kCellTokenKey[] = …;
constexpr char kLanguageKey[] = …;

std::optional<std::string> GetLangFromCache(const base::Value::Dict& cache,
                                            const S2CellId& cell) { … }

std::pair<int, std::string> GetLevelAndLangFromTree(
    const SerializedLanguageTree* serialized_langtree,
    const S2CellId& cell) { … }

}  // namespace

namespace language {

const char UlpLanguageCodeLocator::kCachedGeoLanguagesPref[] = …;

UlpLanguageCodeLocator::UlpLanguageCodeLocator(
    std::vector<std::unique_ptr<SerializedLanguageTree>>&& serialized_langtrees,
    PrefService* prefs)
    : … { … }

UlpLanguageCodeLocator::~UlpLanguageCodeLocator() = default;

// static
void UlpLanguageCodeLocator::RegisterLocalStatePrefs(
    PrefRegistrySimple* const registry) { … }

std::vector<std::string> UlpLanguageCodeLocator::GetLanguageCodes(
    double latitude,
    double longitude) const { … }

}  // namespace language