cwist_err.h

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#ifndef __CWIST_ERR_H__
#define __CWIST_ERR_H__
 
#include <stdint.h>
#include <stdbool.h>
#include <cjson/cJSON.h>
 
struct cwist_sstring;
 
typedef enum cwist_errtype_t {
    /* --- Signed Integer Types --- */
    CWIST_ERR_INT8,   
    CWIST_ERR_INT16,  
    CWIST_ERR_INT32,  
    CWIST_ERR_INT64,  
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
    CWIST_ERR_INT128, 
#endif
 
    /* --- Unsigned Integer Types --- */
    CWIST_ERR_UINT8,  
    CWIST_ERR_UINT16, 
    CWIST_ERR_UINT32, 
    CWIST_ERR_UINT64, 
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
    CWIST_ERR_UINT128, 
#endif
 
    /* --- Complex Types --- */
    CWIST_ERR_STRING, 
    CWIST_ERR_JSON,   
    CWIST_ERR_FLOAT,  
    CWIST_ERR_DOUBLE, 
} cwist_errtype_t;
 
typedef struct __prim_cwist_error_t {
    /* Signed representations */
    int8_t err_i8;   
    int16_t err_i16;  
    int32_t err_i32;  
    int64_t err_i64;  
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
    __int128 err_i128; 
#endif
 
    /* Unsigned representations */
    uint8_t err_u8;   
    uint16_t err_u16;  
    uint32_t err_u32;  
    uint64_t err_u64;  
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
    unsigned __int128 err_u128; 
#endif
 
    struct cwist_sstring *err_string; 
    cJSON *err_json;                  
} __prim_cwist_error_t;
 
typedef struct cwist_error_t {
    cwist_errtype_t errtype;      
    __prim_cwist_error_t error;   
} cwist_error_t;
 
static inline bool cwist_error_is_ok(const cwist_error_t *err) {
    if (!err) return true;
    switch (err->errtype) {
        case CWIST_ERR_INT8: return err->error.err_i8 == 0;
        case CWIST_ERR_INT16: return err->error.err_i16 == 0;
        case CWIST_ERR_INT32: return err->error.err_i32 == 0;
        case CWIST_ERR_INT64: return err->error.err_i64 == 0;
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
        case CWIST_ERR_INT128: return err->error.err_i128 == 0;
#endif
        case CWIST_ERR_UINT8: return err->error.err_u8 == 0;
        case CWIST_ERR_UINT16: return err->error.err_u16 == 0;
        case CWIST_ERR_UINT32: return err->error.err_u32 == 0;
        case CWIST_ERR_UINT64: return err->error.err_u64 == 0;
#if (defined(__clang__) || defined(__GNUC__)) && defined(USE_128BIT_ERRCODE)
        case CWIST_ERR_UINT128: return err->error.err_u128 == 0;
#endif
        case CWIST_ERR_STRING: return err->error.err_string == NULL;
        case CWIST_ERR_JSON: return err->error.err_json == NULL;
        default: return false;
    }
}
 
/* --- Function Prototypes --- */
 
cwist_error_t make_error(cwist_errtype_t type);
 
bool cwist_error_is_ok_extern(const cwist_error_t *err);
 
void cwist_error_dispose(cwist_error_t *err);
 
/* --- Generic Error Macros --- */
 
#define CWIST_SUCCESS 0  
#define CWIST_FAILURE -1  
#define CWIST_ERROR_IO -2  
#define CWIST_ERROR_NOMEM -3  
#define CWIST_ERROR_INVALID_PARAM -4  
#define CWIST_ERROR_PROTOCOL -5  
#define CWIST_ERROR_TIMEOUT -6  
#endif /* __CWIST_ERR_H__ */