OpenVDB  8.0.1
openvdb/Exceptions.h
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1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3 
4 #ifndef OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED
5 #define OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED
6 
7 #include <openvdb/version.h>
8 #include <exception>
9 #include <sstream>
10 #include <string>
11 
12 
13 namespace openvdb {
16 
17 class OPENVDB_API Exception: public std::exception
18 {
19 public:
20  Exception(const Exception&) = default;
21  Exception(Exception&&) = default;
22  Exception& operator=(const Exception&) = default;
23  Exception& operator=(Exception&&) = default;
24  ~Exception() override = default;
25 
26  const char* what() const noexcept override
27  {
28  try { return mMessage.c_str(); } catch (...) {}
29  return nullptr;
30  }
31 
32 protected:
33  Exception() noexcept {}
34  explicit Exception(const char* eType, const std::string* const msg = nullptr) noexcept
35  {
36  try {
37  if (eType) mMessage = eType;
38  if (msg) mMessage += ": " + (*msg);
39  } catch (...) {}
40  }
41 
42 private:
43  std::string mMessage;
44 };
45 
46 
47 #define OPENVDB_EXCEPTION(_classname) \
48 class OPENVDB_API _classname: public Exception \
49 { \
50 public: \
51  _classname() noexcept: Exception( #_classname ) {} \
52  explicit _classname(const std::string& msg) noexcept: Exception( #_classname , &msg) {} \
53 }
54 
55 
66 
67 #undef OPENVDB_EXCEPTION
68 
69 
70 } // namespace OPENVDB_VERSION_NAME
71 } // namespace openvdb
72 
73 
74 #define OPENVDB_THROW(exception, message) \
75 { \
76  std::string _openvdb_throw_msg; \
77  try { \
78  std::ostringstream _openvdb_throw_os; \
79  _openvdb_throw_os << message; \
80  _openvdb_throw_msg = _openvdb_throw_os.str(); \
81  } catch (...) {} \
82  throw exception(_openvdb_throw_msg); \
83 } // OPENVDB_THROW
84 
85 #endif // OPENVDB_EXCEPTIONS_HAS_BEEN_INCLUDED
Definition: openvdb/Exceptions.h:61
#define OPENVDB_API
Helper macros for defining library symbol visibility.
Definition: Platform.h:208
Definition: openvdb/Exceptions.h:17
Definition: openvdb/Exceptions.h:60
Definition: openvdb/Exceptions.h:62
Definition: openvdb/Exceptions.h:56
Definition: openvdb/Exceptions.h:64
Definition: openvdb/Exceptions.h:59
Exception(const char *eType, const std::string *const msg=nullptr) noexcept
Definition: openvdb/Exceptions.h:34
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h:101
Definition: openvdb/Exceptions.h:57
Definition: openvdb/Exceptions.h:13
Exception() noexcept
Definition: openvdb/Exceptions.h:33
Library and file format version numbers.
Definition: openvdb/Exceptions.h:65
const char * what() const noexcept override
Definition: openvdb/Exceptions.h:26
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h:153
Definition: openvdb/Exceptions.h:58
Definition: openvdb/Exceptions.h:63
#define OPENVDB_EXCEPTION(_classname)
Definition: openvdb/Exceptions.h:47