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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/feature_map.h"
#include <stddef.h>
#include <memory>
#include <string>
#include <string_view>
#include "base/android/jni_string.h"
#include "base/logging.h"
#include "base/metrics/field_trial_params.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "base/features_jni/FeatureMap_jni.h"
namespace base::android {
std::pair<std::string_view, const Feature*> MakeNameToFeaturePair(
const Feature* feature) {
return std::make_pair(feature->name, feature);
}
FeatureMap::FeatureMap(
base::span<const Feature* const> features_exposed_to_java) {
mapping_ =
MakeFlatMap<std::string_view, raw_ptr<const Feature, CtnExperimental>>(
features_exposed_to_java, {}, &MakeNameToFeaturePair);
}
FeatureMap::~FeatureMap() = default;
const Feature* FeatureMap::FindFeatureExposedToJava(
const std::string& feature_name) {
auto it = mapping_.find(feature_name);
if (it != mapping_.end()) {
return it->second;
}
LOG(FATAL) << "Queried feature cannot be found in FeatureMap: "
<< feature_name;
}
static bool JNI_FeatureMap_IsEnabled(jlong jfeature_map,
std::string& feature_name) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
return base::FeatureList::IsEnabled(*feature);
}
static std::string JNI_FeatureMap_GetFieldTrialParamByFeature(
jlong jfeature_map,
std::string& feature_name,
std::string& param_name) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
return base::GetFieldTrialParamValueByFeature(*feature, param_name);
}
static jint JNI_FeatureMap_GetFieldTrialParamByFeatureAsInt(
jlong jfeature_map,
std::string& feature_name,
std::string& param_name,
const jint jdefault_value) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
return base::GetFieldTrialParamByFeatureAsInt(*feature, param_name,
jdefault_value);
}
static jdouble JNI_FeatureMap_GetFieldTrialParamByFeatureAsDouble(
jlong jfeature_map,
std::string& feature_name,
std::string& param_name,
const jdouble jdefault_value) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
return base::GetFieldTrialParamByFeatureAsDouble(*feature, param_name,
jdefault_value);
}
static bool JNI_FeatureMap_GetFieldTrialParamByFeatureAsBoolean(
jlong jfeature_map,
std::string& feature_name,
std::string& param_name,
const bool jdefault_value) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
return base::GetFieldTrialParamByFeatureAsBool(*feature, param_name,
jdefault_value);
}
static std::vector<std::string>
JNI_FeatureMap_GetFlattedFieldTrialParamsForFeature(jlong jfeature_map,
std::string& feature_name) {
FeatureMap* feature_map = reinterpret_cast<FeatureMap*>(jfeature_map);
base::FieldTrialParams params;
std::vector<std::string> keys_and_values;
const base::Feature* feature =
feature_map->FindFeatureExposedToJava(feature_name);
if (feature && base::GetFieldTrialParamsByFeature(*feature, ¶ms)) {
for (const auto& param_pair : params) {
keys_and_values.push_back(param_pair.first);
keys_and_values.push_back(param_pair.second);
}
}
return keys_and_values;
}
} // namespace base::android
DEFINE_JNI(FeatureMap)
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