mgl_file_defs.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_FILE_DEFS_H_1611104704
#define INCGUARD_MGL_FILE_DEFS_H_1611104704
 
#include <cstdint>
 
#include <mgl/common/mgl_result_wrapper.h>
#include <mgl/hash/mgl_hash_fnv1a.h>
#include <mgl/stl/mgl_stl_memory.h>
 
namespace MGL::File
{
enum class DelegateKey : uint32_t {};
 
constexpr uint32_t kDefaultDelegateKeySeed = MGL::Hash::kFNV1aDefaultValue32;
 
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
[[nodiscard]] constexpr DelegateKey MakeDelegateKey(const char *keyString, uint32_t seed = kDefaultDelegateKeySeed) noexcept
{
    return DelegateKey{MGL::Hash::FNV1a(keyString, seed)};
}
 
class Delegate;
 
using SharedDelegate = std::shared_ptr<Delegate>;
 
enum class OpenMode : uint8_t
{
    None,    
    Read,    
    Write    
};
 
enum class MountAccessType : uint8_t
{
    ReadOnly,    
    Writable,    
};
 
enum class SeekType : uint8_t
{
    Top,       
    End,       
    Current    
};
 
enum class Error : uint16_t
{
    None                    = 0,    
 
    NoOperation             = 100,  
    NotImplemented          = 101,  
    NotSupported            = 102,  
    InvalidDelegate         = 103,  
    InvalidArgument         = 104,  
    InvalidPathFormat       = 105,  
    BadImplement            = 106,  
 
    DelegateAlreadyExist    = 200,  
    DelegateNotExist        = 201,  
    NotMounted              = 202,  
    AlreadyMounted          = 203,  
    MountNotWritable        = 204,  
    MountFailed             = 205,  
    NotOpened               = 206,  
    NotReadableMode         = 207,  
    NotWritableMode         = 208,  
    NoSystemNativeFile      = 209,  
    NoRegularFile           = 210,  
 
    FileNotExist            = 300,  
    FileAlreadyExist        = 301,  
    PathNotFound            = 302,  
    NotPermitted            = 303,  
    NoSpaceStorage          = 304,  
    ReadError               = 305,  
    WriteError              = 306,  
 
    UnknownError            = 999,  
};
 
using Result = MGL::ResultWrapper<Error, Error::None, Error::NoOperation>;
 
}   // namespace MGL::File
#endif  // INCGUARD_MGL_FILE_DEFS_H_1611104704
 
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