// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.fuzzer;

using zx;

/// See |Controller.GetCorpusWriter| and |Controller.GetCorpusReader|.
type Corpus = flexible enum : uint8 {
    /// Indicates a set of fixed, immutable inputs typically provided at
    /// start-up. These inputs are never discarded when merging.
    SEED = 1;

    /// Indicates a set of inputs generated by the fuzzer. These may be modified
    /// and/or discarded when merging and minimizing the corpus.
    LIVE = 2;
};

/// Sends a sequence of test inputs belonging to a fuzzer's corpus.
closed protocol CorpusReader {
    /// Sends the next test input from the corpus.
    ///
    /// + request `test_input` the byte sequence representing the next test
    ///   input in a corpus.
    /// - response `result` one of the following:
    ///     - `ZX_OK` if the test input was sent.
    ///     - A socket error if transferring the input failed.
    strict Next(resource struct {
        test_input Input;
    }) -> (struct {
        result zx.Status;
    });
};