chromium/net/third_party/quiche/src/quiche/common/http/http_header_block.h

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef QUICHE_COMMON_HTTP_HTTP_HEADER_BLOCK_H_
#define QUICHE_COMMON_HTTP_HTTP_HEADER_BLOCK_H_

#include <stddef.h>

#include <functional>
#include <list>
#include <string>
#include <utility>

#include "absl/base/attributes.h"
#include "absl/container/inlined_vector.h"
#include "absl/strings/string_view.h"
#include "quiche/common/http/http_header_storage.h"
#include "quiche/common/platform/api/quiche_export.h"
#include "quiche/common/platform/api/quiche_logging.h"
#include "quiche/common/quiche_linked_hash_map.h"
#include "quiche/common/quiche_text_utils.h"

namespace quiche {

namespace test {
class HttpHeaderBlockPeer;
class ValueProxyPeer;
}  // namespace test

#ifndef SPDY_HEADER_DEBUG
#if !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
#define SPDY_HEADER_DEBUG …
#else  // !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
#define SPDY_HEADER_DEBUG …
#endif  // !defined(NDEBUG) || defined(ADDRESS_SANITIZER)
#endif  // SPDY_HEADER_DEBUG

// This class provides a key-value map that can be used to store SPDY header
// names and values. This data structure preserves insertion order.
//
// Under the hood, this data structure uses large, contiguous blocks of memory
// to store names and values. Lookups may be performed with absl::string_view
// keys, and values are returned as absl::string_views (via ValueProxy, below).
// Value absl::string_views are valid as long as the HttpHeaderBlock exists;
// allocated memory is never freed until HttpHeaderBlock's destruction.
//
// This implementation does not make much of an effort to minimize wasted space.
// It's expected that keys are rarely deleted from a HttpHeaderBlock.
class QUICHE_EXPORT HttpHeaderBlock { … };

inline bool operator==(absl::string_view lhs,
                       const HttpHeaderBlock::ValueProxy& rhs) { … }

}  // namespace quiche

#endif  // QUICHE_COMMON_HTTP_HTTP_HEADER_BLOCK_H_