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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// Copyright (c) 2022-2025 The pybind Community.
// All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#pragma once
#include "../pytypes.h"
#include "common.h"
#include "internals.h"
#include <cassert>
#include <sstream>
#include <string>
#include <typeindex>
PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
PYBIND11_NAMESPACE_BEGIN(detail)
// This is a separate function only to enable easy unit testing.
inline std::string
native_enum_missing_finalize_error_message(const std::string &enum_name_encoded) {
return "pybind11::native_enum<...>(\"" + enum_name_encoded + "\", ...): MISSING .finalize()";
}
class native_enum_data {
public:
native_enum_data(const object &parent_scope,
const char *enum_name,
const char *native_type_name,
const char *class_doc,
const std::type_index &enum_type_index)
: enum_name_encoded{enum_name}, native_type_name_encoded{native_type_name},
enum_type_index{enum_type_index}, parent_scope(parent_scope), enum_name{enum_name},
native_type_name{native_type_name}, class_doc(class_doc), export_values_flag{false},
finalize_needed{false} {}
void finalize();
native_enum_data(const native_enum_data &) = delete;
native_enum_data &operator=(const native_enum_data &) = delete;
#if !defined(NDEBUG)
// This dtor cannot easily be unit tested because it terminates the process.
~native_enum_data() {
if (finalize_needed) {
pybind11_fail(native_enum_missing_finalize_error_message(enum_name_encoded));
}
}
#endif
protected:
void disarm_finalize_check(const char *error_context) {
if (!finalize_needed) {
pybind11_fail("pybind11::native_enum<...>(\"" + enum_name_encoded
+ "\"): " + error_context);
}
finalize_needed = false;
}
void arm_finalize_check() {
assert(!finalize_needed); // Catch redundant calls.
finalize_needed = true;
}
std::string enum_name_encoded;
std::string native_type_name_encoded;
std::type_index enum_type_index;
private:
object parent_scope;
str enum_name;
str native_type_name;
std::string class_doc;
protected:
list members;
list member_docs;
bool export_values_flag : 1; // Attention: It is best to keep the bools together.
private:
bool finalize_needed : 1;
};
inline void global_internals_native_enum_type_map_set_item(const std::type_index &enum_type_index,
PyObject *py_enum) {
with_internals(
[&](internals &internals) { internals.native_enum_type_map[enum_type_index] = py_enum; });
}
inline handle
global_internals_native_enum_type_map_get_item(const std::type_index &enum_type_index) {
return with_internals([&](internals &internals) {
auto found = internals.native_enum_type_map.find(enum_type_index);
if (found != internals.native_enum_type_map.end()) {
return handle(found->second);
}
return handle();
});
}
inline bool
global_internals_native_enum_type_map_contains(const std::type_index &enum_type_index) {
return with_internals([&](internals &internals) {
return internals.native_enum_type_map.count(enum_type_index) != 0;
});
}
inline object import_or_getattr(const std::string &fully_qualified_name,
const std::string &append_to_exception_message) {
std::istringstream stream(fully_qualified_name);
std::string part;
if (!std::getline(stream, part, '.') || part.empty()) {
std::string msg = "Invalid fully-qualified name `";
msg += fully_qualified_name;
msg += "`";
msg += append_to_exception_message;
throw value_error(msg);
}
auto curr_scope = reinterpret_steal<object>(PyImport_ImportModule(part.c_str()));
if (!curr_scope) {
std::string msg = "Failed to import top-level module `";
msg += part;
msg += "`";
msg += append_to_exception_message;
raise_from(PyExc_ImportError, msg.c_str());
throw error_already_set();
}
// Now recursively getattr or import remaining parts
std::string curr_path = part;
while (std::getline(stream, part, '.')) {
if (part.empty()) {
std::string msg = "Invalid fully-qualified name `";
msg += fully_qualified_name;
msg += "`";
msg += append_to_exception_message;
throw value_error(msg);
}
std::string next_path = curr_path;
next_path += ".";
next_path += part;
auto next_scope
= reinterpret_steal<object>(PyObject_GetAttrString(curr_scope.ptr(), part.c_str()));
if (!next_scope) {
error_fetch_and_normalize stored_getattr_error("getattr");
// Try importing the next level
next_scope = reinterpret_steal<object>(PyImport_ImportModule(next_path.c_str()));
if (!next_scope) {
error_fetch_and_normalize stored_import_error("import");
std::string msg = "Failed to import or getattr `";
msg += part;
msg += "` from `";
msg += curr_path;
msg += "`";
msg += append_to_exception_message;
msg += "\n-------- getattr exception --------\n";
msg += stored_getattr_error.error_string();
msg += "\n-------- import exception --------\n";
msg += stored_import_error.error_string();
throw import_error(msg.c_str());
}
}
curr_scope = next_scope;
curr_path = next_path;
}
return curr_scope;
}
inline void native_enum_data::finalize() {
disarm_finalize_check("DOUBLE finalize");
if (hasattr(parent_scope, enum_name)) {
pybind11_fail("pybind11::native_enum<...>(\"" + enum_name_encoded
+ "\"): an object with that name is already defined");
}
auto py_enum_type = import_or_getattr(native_type_name, " (native_type_name)");
auto py_enum = py_enum_type(enum_name, members);
object module_name = get_module_name_if_available(parent_scope);
if (module_name) {
py_enum.attr("__module__") = module_name;
}
if (hasattr(parent_scope, "__qualname__")) {
const auto parent_qualname = parent_scope.attr("__qualname__").cast<std::string>();
py_enum.attr("__qualname__") = str(parent_qualname + "." + enum_name.cast<std::string>());
}
parent_scope.attr(enum_name) = py_enum;
if (export_values_flag) {
for (auto member : members) {
auto member_name = member[int_(0)];
if (hasattr(parent_scope, member_name)) {
pybind11_fail("pybind11::native_enum<...>(\"" + enum_name_encoded + "\").value(\""
+ member_name.cast<std::string>()
+ "\"): an object with that name is already defined");
}
parent_scope.attr(member_name) = py_enum[member_name];
}
}
if (!class_doc.empty()) {
py_enum.attr("__doc__") = class_doc.c_str();
}
for (auto doc : member_docs) {
py_enum[doc[int_(0)]].attr("__doc__") = doc[int_(1)];
}
global_internals_native_enum_type_map_set_item(enum_type_index, py_enum.release().ptr());
}
PYBIND11_NAMESPACE_END(detail)
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
|
