formats/assessor.h

// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef THIRD_PARTY_CREDENTIO_FORMATS_ASSESSOR_H_
#define THIRD_PARTY_CREDENTIO_FORMATS_ASSESSOR_H_

#include "absl/status/statusor.h"
#include "riegeli/bytes/reader.h"

namespace credentio {

// FormatAssessors determine if a given asset is applicable.
class FormatAssessor {
 public:
  virtual ~FormatAssessor() = default;

  // Returns true if the supplied asset is supported. Returns an error if the
  // asset cannot be assessed. Will assess the input at the current position,
  // and will return the position to the start of the input unless a failure
  // occurs.
  virtual absl::StatusOr<bool> IsSupported(riegeli::Reader& input) const = 0;
};

}  // namespace credentio

#endif  // THIRD_PARTY_CREDENTIO_FORMATS_ASSESSOR_H_