source: trunk/python2/include/aff4_errors.h @ 196

Last change on this file since 196 was 196, checked in by tim, 14 years ago

experimental python bindings generator as provided by Michael Cohen

File size: 2.0 KB
Line 
1/*
2** aff4_errors.h
3**
4** Made by mic
5** Login   <mic@laptop>
6**
7** Started on  Sat Mar  6 20:54:25 2010 mic
8** Last update Sat Mar  6 20:54:25 2010 mic
9*/
10
11#ifndef         AFF4_ERRORS_H_
12# define        AFF4_ERRORS_H_
13
14// Some helpful little things
15#define ERROR_BUFFER_SIZE 1024
16
17/** This is used for error reporting. This is similar to the way
18    python does it, i.e. we set the error flag and return NULL.
19*/
20enum _error_type {
21  EZero,EGeneric,EOverflow,EWarning,
22  EUnderflow,EIOError, ENoMemory, EInvalidParameter, ERuntimeError, EKeyError,
23
24  // Reserved for impossible conditions
25  EProgrammingError
26};
27
28void *raise_errors(enum _error_type t, char *string,  ...);
29
30/** We only set the error state if its not already set */
31#define RaiseError(t, message, ...)                                     \
32  if(*aff4_get_current_error(NULL) == EZero) {                          \
33    raise_errors(t, "%s: (%s:%d) " message, __FUNCTION__, __FILE__, __LINE__, ## __VA_ARGS__); \
34  };
35
36#define LogWarnings(format, ...)                \
37  do {                                          \
38    RaiseError(EWarning, format, ## __VA_ARGS__);       \
39    PrintError();                               \
40  } while(0);
41 
42#define ClearError()                            \
43  do {*aff4_get_current_error(NULL) = EZero;} while(0);
44
45#define PrintError()                            \
46  do {char *error_str; if(*aff4_get_current_error(&error_str)) fprintf(stdout, "%s", error_str); fflush(stdout); ClearError(); }while(0);
47
48#define CheckError(error)                       \
49  (*aff4_get_current_error(NULL) == error)
50
51/** The current error state is returned by this function.
52
53    This is done in a thread safe manner.
54 */
55enum _error_type *aff4_get_current_error(char **error_str);
56
57
58// These macros are used when we need to do something which might
59// change the error state on the error path of a function.
60#define PUSH_ERROR_STATE { enum _error_type *tmp_error_p = aff4_get_current_error(NULL); enum _error_type tmp_error = *tmp_error_p; enum _error_type exception __attribute__((unused));
61
62#define POP_ERROR_STATE *tmp_error_p = tmp_error;};
63
64
65void error_init();
66
67#endif      /* !AFF4_ERRORS_H_ */
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