chromium/chrome/updater/external_constants_builder.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_UPDATER_EXTERNAL_CONSTANTS_BUILDER_H_
#define CHROME_UPDATER_EXTERNAL_CONSTANTS_BUILDER_H_

#include <optional>
#include <string>
#include <vector>

#include "base/files/file_path.h"
#include "base/values.h"

namespace base {
class TimeDelta;
}

namespace crx_file {
enum class VerifierFormat;
}

namespace updater {

// ExternalConstantsBuilder uses the Builder design pattern to write a set of
// overrides for default constant values to the file loaded by
// ExternalConstantsOverrider. It is not thread-safe.
//
// When writing an overrides file, unset values (either because they were never
// set or because they were cleared) are not included in the file, so the
// "real" value would be used instead. An ExternalConstantsBuilder with
// no values set would write an empty JSON object, which is a valid override
// file that overrides nothing.
//
// If an ExternalConstantsBuilder is destroyed with no calls to Overwrite(),
// it logs an error.
class ExternalConstantsBuilder { … };

}  // namespace updater

#endif  // CHROME_UPDATER_EXTERNAL_CONSTANTS_BUILDER_H_