1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
#include <gu/exn.h>
#include <gu/assert.h>
GU_API GuExn*
gu_new_exn(GuPool* pool)
{
GuExn* exn = gu_new(GuExn, pool);
exn->state = GU_EXN_OK;
exn->caught = NULL;
exn->data.pool = pool;
exn->data.data = NULL;
return exn;
}
GU_API bool
gu_exn_is_raised(GuExn* err) {
return err && (err->state == GU_EXN_RAISED);
}
GU_API bool
gu_exn_caught_(GuExn* err, const char* type)
{
return (err->caught && strcmp(err->caught, type) == 0);
}
GU_API void
gu_exn_block(GuExn* err)
{
if (err && err->state == GU_EXN_RAISED) {
err->state = GU_EXN_BLOCKED;
}
}
GU_API void
gu_exn_unblock(GuExn* err)
{
if (err && err->state == GU_EXN_BLOCKED) {
err->state = GU_EXN_RAISED;
}
}
GU_API GuExnData*
gu_exn_raise_debug_(GuExn* err, const char* type,
const char* filename, const char* func, int lineno)
{
gu_require(type);
GuExnState old_state = err->state;
err->state = GU_EXN_RAISED;
if (old_state == GU_EXN_OK) {
err->caught = type;
if (err->data.pool) {
return &err->data;
}
}
// Exceptian had already been raised, possibly blocked, or no
// exception value is required.
return NULL;
}
GU_API GuExnData*
gu_exn_raise_(GuExn* base, const char* type)
{
return gu_exn_raise_debug_(base, type, NULL, NULL, -1);
}
GU_API void
gu_raise_errno(GuExn* err)
{
GuExnData* err_data = gu_raise(err, GuErrno);
if (err_data) {
GuErrno* gu_errno = gu_new(GuErrno, err_data->pool);
*gu_errno = errno;
err_data->data = gu_errno;
}
}
|
