104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/*
|
|
* Copyright (c) Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
* You may select, at your option, one of the above-listed licenses.
|
|
*/
|
|
|
|
#ifndef RESULT_H
|
|
#define RESULT_H
|
|
|
|
#include <stddef.h>
|
|
|
|
/**
|
|
* The error type enum.
|
|
*/
|
|
typedef enum {
|
|
result_error_ok, /**< No error. */
|
|
result_error_skip, /**< This method was skipped. */
|
|
result_error_system_error, /**< Some internal error happened. */
|
|
result_error_compression_error, /**< Compression failed. */
|
|
result_error_decompression_error, /**< Decompression failed. */
|
|
result_error_round_trip_error, /**< Data failed to round trip. */
|
|
} result_error_t;
|
|
|
|
/**
|
|
* The success type.
|
|
*/
|
|
typedef struct {
|
|
size_t total_size; /**< The total compressed size. */
|
|
} result_data_t;
|
|
|
|
/**
|
|
* The result type.
|
|
* Do not access the member variables directory, use the helper functions.
|
|
*/
|
|
typedef struct {
|
|
result_error_t internal_error;
|
|
result_data_t internal_data;
|
|
} result_t;
|
|
|
|
/**
|
|
* Create a result of the error type.
|
|
*/
|
|
static result_t result_error(result_error_t error);
|
|
/**
|
|
* Create a result of the success type.
|
|
*/
|
|
static result_t result_data(result_data_t data);
|
|
|
|
/**
|
|
* Check if the result is an error or skip.
|
|
*/
|
|
static int result_is_error(result_t result);
|
|
/**
|
|
* Check if the result error is skip.
|
|
*/
|
|
static int result_is_skip(result_t result);
|
|
/**
|
|
* Get the result error or okay.
|
|
*/
|
|
static result_error_t result_get_error(result_t result);
|
|
/**
|
|
* Get the result data. The result MUST be checked with result_is_error() first.
|
|
*/
|
|
static result_data_t result_get_data(result_t result);
|
|
|
|
static result_t result_error(result_error_t error) {
|
|
result_t result = {
|
|
.internal_error = error,
|
|
};
|
|
return result;
|
|
}
|
|
|
|
static result_t result_data(result_data_t data) {
|
|
result_t result = {
|
|
.internal_error = result_error_ok,
|
|
.internal_data = data,
|
|
};
|
|
return result;
|
|
}
|
|
|
|
static int result_is_error(result_t result) {
|
|
return result_get_error(result) != result_error_ok;
|
|
}
|
|
|
|
static int result_is_skip(result_t result) {
|
|
return result_get_error(result) == result_error_skip;
|
|
}
|
|
|
|
static result_error_t result_get_error(result_t result) {
|
|
return result.internal_error;
|
|
}
|
|
|
|
char const* result_get_error_string(result_t result);
|
|
|
|
static result_data_t result_get_data(result_t result) {
|
|
return result.internal_data;
|
|
}
|
|
|
|
#endif
|