upb/base/string_view.h

/*
 * Copyright (c) 2009-2021, Google LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Google LLC nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#ifndef UPB_BASE_STRING_VIEW_H_
#define UPB_BASE_STRING_VIEW_H_

#include <string.h>

// Must be last.
#include "upb/port/def.inc"

#define UPB_STRINGVIEW_INIT(ptr, len) \
  { ptr, len }

#define UPB_STRINGVIEW_FORMAT "%.*s"
#define UPB_STRINGVIEW_ARGS(view) (int)(view).size, (view).data

// LINT.IfChange(struct_definition)
typedef struct {
  const char* data;
  size_t size;
} upb_StringView;
// LINT.ThenChange(GoogleInternalName0)

#ifdef __cplusplus
extern "C" {
#endif

UPB_API_INLINE upb_StringView upb_StringView_FromDataAndSize(const char* data,
                                                             size_t size) {
  upb_StringView ret;
  ret.data = data;
  ret.size = size;
  return ret;
}

UPB_INLINE upb_StringView upb_StringView_FromString(const char* data) {
  return upb_StringView_FromDataAndSize(data, strlen(data));
}

UPB_INLINE bool upb_StringView_IsEqual(upb_StringView a, upb_StringView b) {
  return a.size == b.size && memcmp(a.data, b.data, a.size) == 0;
}

#ifdef __cplusplus
} /* extern "C" */
#endif

#include "upb/port/undef.inc"

#endif /* UPB_BASE_STRING_VIEW_H_ */