Electroneum
error.cpp
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27 
28 #include "error.h"
29 
30 #include <lmdb.h>
31 #include <string>
32 
33 namespace {
34  struct category final : std::error_category
35  {
36  virtual const char* name() const noexcept override final
37  {
38  return "lmdb::error_category()";
39  }
40 
41  virtual std::string message(int value) const override final
42  {
43  char const* const msg = mdb_strerror(value);
44  if (msg)
45  return msg;
46  return "Unknown lmdb::error_category() value";
47  }
48 
49  virtual std::error_condition default_error_condition(int value) const noexcept override final
50  {
51  switch (value)
52  {
53  case MDB_KEYEXIST:
54  case MDB_NOTFOUND:
55  break; // map to nothing generic
56  case MDB_PAGE_NOTFOUND:
57  case MDB_CORRUPTED:
58  return std::errc::bad_address;
59  case MDB_PANIC:
61  case MDB_INVALID:
62  break; // map to nothing generic
63  case MDB_MAP_FULL:
64  return std::errc::no_buffer_space;
65  case MDB_DBS_FULL:
66  break; // map to nothing generic
67  case MDB_READERS_FULL:
68  case MDB_TLS_FULL:
69  return std::errc::no_lock_available;
70  case MDB_TXN_FULL:
71  case MDB_CURSOR_FULL:
72  case MDB_PAGE_FULL:
73  case MDB_MAP_RESIZED:
74  break; // map to nothing generic
75  case MDB_INCOMPATIBLE:
76  return std::errc::invalid_argument;
77  case MDB_BAD_RSLOT:
78  case MDB_BAD_TXN:
79  case MDB_BAD_VALSIZE:
80  case MDB_BAD_DBI:
81  return std::errc::invalid_argument;
82  default:
83  return std::error_condition{value, std::generic_category()};
84  }
85  return std::error_condition{value, *this};
86  }
87  };
88 }
89 
90 namespace lmdb
91 {
93  {
94  static const category instance{};
95  return instance;
96  }
97 }
98 
#define MDB_NOTFOUND
Definition: lmdb.h:439
std::error_category const & error_category() noexcept
Definition: error.cpp:92
Lightning memory-mapped database library.
::std::string string
Definition: gtest-port.h:1097
#define MDB_PAGE_NOTFOUND
Definition: lmdb.h:441
#define MDB_BAD_RSLOT
Definition: lmdb.h:476
#define MDB_BAD_VALSIZE
Definition: lmdb.h:480
const char * name
#define MDB_CORRUPTED
Definition: lmdb.h:443
#define MDB_DBS_FULL
Definition: lmdb.h:453
#define MDB_BAD_TXN
Definition: lmdb.h:478
#define MDB_BAD_DBI
Definition: lmdb.h:482
#define MDB_MAP_RESIZED
Definition: lmdb.h:465
#define MDB_TXN_FULL
Definition: lmdb.h:459
#define MDB_CURSOR_FULL
Definition: lmdb.h:461
#define MDB_TLS_FULL
Definition: lmdb.h:457
std::string message("Message requiring signing")
#define MDB_MAP_FULL
Definition: lmdb.h:451
const GenericPointer< typename T::ValueType > T2 value
Definition: pointer.h:1225
#define MDB_KEYEXIST
Definition: lmdb.h:437
#define MDB_READERS_FULL
Definition: lmdb.h:455
char * mdb_strerror(int err)
Return a string describing a given error code.
#define MDB_PANIC
Definition: lmdb.h:445
#define MDB_INVALID
Definition: lmdb.h:449
#define MDB_VERSION_MISMATCH
Definition: lmdb.h:447
std::error_category const & error_category() noexcept
Definition: error.cpp:87
#define MDB_PAGE_FULL
Definition: lmdb.h:463
#define MDB_INCOMPATIBLE
Definition: lmdb.h:474