GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — cel-python/cel_expr_python/py_error_status.cc at main · mmulqueen/cel-python

Expand file tree

/

py_error_status.cc

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
156 lines (133 loc) · 4.8 KB
/

py_error_status.cc

Copy path

File metadata and controls

156 lines (133 loc) · 4.8 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/*
* Copyright 2025 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "cel_expr_python/py_error_status.h"
#include <Python.h> // IWYU pragma: keep - Needed for PyObject
#include <stdexcept>
#include "absl/base/no_destructor.h"
#include "absl/container/flat_hash_map.h"
#include "absl/log/absl_check.h"
#include "absl/log/absl_log.h" // IWYU pragma: keep - Needed for ABSL_LOG
#include "absl/status/status.h"
#undef LOG_ALL_PY_ERRORS
namespace cel_python {
static absl::Status PyErrorToStatus(PyObject* py_type, PyObject* py_error) {
// Loose mapping from Python exceptions to absl::Status codes, consistent with
// the pybind11 mapping.
static const absl::NoDestructor<
absl::flat_hash_map<PyObject*, absl::StatusCode>>
kPyExceptionToStatusMap(
{{PyExc_MemoryError, absl::StatusCode::kResourceExhausted},
{PyExc_NotImplementedError, absl::StatusCode::kUnimplemented},
{PyExc_KeyboardInterrupt, absl::StatusCode::kAborted},
{PyExc_SystemError, absl::StatusCode::kInternal},
{PyExc_SyntaxError, absl::StatusCode::kInternal},
{PyExc_TypeError, absl::StatusCode::kInvalidArgument},
{PyExc_ValueError, absl::StatusCode::kOutOfRange},
{PyExc_LookupError, absl::StatusCode::kNotFound},
{PyExc_OverflowError, absl::StatusCode::kOutOfRange}});
PyObject* pystr = PyObject_Str(py_error);
const char* message = pystr ? PyUnicode_AsUTF8(pystr) : "Unknown error";
Py_XDECREF(pystr);
auto it = kPyExceptionToStatusMap->find(py_type);
if (it == kPyExceptionToStatusMap->end()) {
return absl::UnknownError(message);
}
return absl::Status(it->second, message);
}
// A custom exception type that can be thrown from C++ to Python.
// This allows us to propagate absl::Status through pybind11 without introducing
// a dependency on pybind11_abseil:status_casters.
class PyCelError : public pybind11::builtin_exception {
public:
explicit PyCelError(const absl::Status& status)
: builtin_exception(status.ToString() + " [" +
absl::StatusCodeToString(status.code()) + "]") {
switch (status.code()) {
case absl::StatusCode::kInvalidArgument:
case absl::StatusCode::kOutOfRange:
py_err_type_ = PyExc_ValueError;
break;
case absl::StatusCode::kNotFound:
py_err_type_ = PyExc_LookupError;
break;
default:
py_err_type_ = PyExc_RuntimeError;
break;
}
}
void set_error() const override { PyErr_SetString(py_err_type_, what()); }
private:
PyObject* py_err_type_;
};
void ThrowIfError(const absl::Status& status) {
if (!status.ok()) {
throw PyCelError(status);
}
}
std::runtime_error StatusToException(const absl::Status& status) {
ABSL_CHECK(!status.ok()); // Crash OK: all call sites are
// local to the library.
return PyCelError(status);
}
static absl::Status& PendingPyError() {
static absl::NoDestructor<absl::Status> pending_py_error(absl::OkStatus());
return *pending_py_error;
}
absl::Status PyErr_toStatus() {
PyObject* py_error = PyErr_Occurred();
if (!py_error) {
absl::Status status = PendingPyError();
if (!status.ok()) {
PendingPyError() = absl::OkStatus();
return status;
}
return absl::OkStatus();
}
absl::Status status;
PyObject *ptype, *pvalue, *ptraceback;
// Fetch the exception details
PyErr_Fetch(&ptype, &pvalue, &ptraceback);
PyErr_NormalizeException(&ptype, &pvalue, &ptraceback);
// Get the string representation of the error message
if (pvalue) {
status = PyErrorToStatus(ptype, pvalue);
}
// Clean up all the fetched objects
Py_XDECREF(ptype);
Py_XDECREF(pvalue);
Py_XDECREF(ptraceback);
PendingPyError() = absl::OkStatus();
return status;
}
void PyErr_noteAndClear() {
if (!PyErr_Occurred()) {
return;
}
// Fetch the exception details
PyObject *ptype, *pvalue, *ptraceback;
PyErr_Fetch(&ptype, &pvalue, &ptraceback);
PyErr_NormalizeException(&ptype, &pvalue, &ptraceback);
PendingPyError() = PyErrorToStatus(ptype, pvalue);
PyErr_Clear();
// Clean up all the fetched objects
Py_XDECREF(ptype);
Py_XDECREF(pvalue);
Py_XDECREF(ptraceback);
#ifdef LOG_ALL_PY_ERRORS
ABSL_LOG(INFO) << "PyErr_Occurred: " << PendingPyError();
#endif
}
} // namespace cel_python
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.