Adds enum field trial parser.
Removed the need to create a custom parser function and reuses some of
the code to reduce binary overhead of enums.
Bug: webrtc:9346
Change-Id: I51c9da713ed5456a86a2afbcf0991477bb83b894
Reviewed-on: https://webrtc-review.googlesource.com/83623
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23752}diff --git a/rtc_base/experiments/field_trial_parser.cc b/rtc_base/experiments/field_trial_parser.cc
index 4ea603f..55299ad 100644
--- a/rtc_base/experiments/field_trial_parser.cc
+++ b/rtc_base/experiments/field_trial_parser.cc
@@ -121,6 +121,37 @@
return true;
}
+AbstractFieldTrialEnum::AbstractFieldTrialEnum(
+ std::string key,
+ int default_value,
+ std::map<std::string, int> mapping)
+ : FieldTrialParameterInterface(key),
+ value_(default_value),
+ enum_mapping_(mapping) {
+ for (auto& key_val : enum_mapping_)
+ valid_values_.insert(key_val.second);
+}
+AbstractFieldTrialEnum::AbstractFieldTrialEnum(const AbstractFieldTrialEnum&) =
+ default;
+AbstractFieldTrialEnum::~AbstractFieldTrialEnum() = default;
+
+bool AbstractFieldTrialEnum::Parse(absl::optional<std::string> str_value) {
+ if (str_value) {
+ auto it = enum_mapping_.find(*str_value);
+ if (it != enum_mapping_.end()) {
+ value_ = it->second;
+ return true;
+ }
+ absl::optional<int> value = ParseTypedParameter<int>(*str_value);
+ if (value.has_value() &&
+ (valid_values_.find(*value) != valid_values_.end())) {
+ value_ = *value;
+ return true;
+ }
+ }
+ return false;
+}
+
template class FieldTrialParameter<bool>;
template class FieldTrialParameter<double>;
template class FieldTrialParameter<int>;