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
|
/*************************************************************************/
/* native_extension_manager.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "native_extension_manager.h"
#include "core/io/file_access.h"
NativeExtensionManager::LoadStatus NativeExtensionManager::load_extension(const String &p_path) {
if (native_extension_map.has(p_path)) {
return LOAD_STATUS_ALREADY_LOADED;
}
Ref<NativeExtension> extension = ResourceLoader::load(p_path);
if (extension.is_null()) {
return LOAD_STATUS_FAILED;
}
if (level >= 0) { //already initialized up to some level
int32_t minimum_level = extension->get_minimum_library_initialization_level();
if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) {
return LOAD_STATUS_NEEDS_RESTART;
}
//initialize up to current level
for (int32_t i = minimum_level; i < level; i++) {
extension->initialize_library(NativeExtension::InitializationLevel(level));
}
}
native_extension_map[p_path] = extension;
return LOAD_STATUS_OK;
}
NativeExtensionManager::LoadStatus NativeExtensionManager::reload_extension(const String &p_path) {
return LOAD_STATUS_OK; //TODO
}
NativeExtensionManager::LoadStatus NativeExtensionManager::unload_extension(const String &p_path) {
if (!native_extension_map.has(p_path)) {
return LOAD_STATUS_NOT_LOADED;
}
Ref<NativeExtension> extension = native_extension_map[p_path];
if (level >= 0) { //already initialized up to some level
int32_t minimum_level = extension->get_minimum_library_initialization_level();
if (minimum_level < MIN(level, NativeExtension::INITIALIZATION_LEVEL_SCENE)) {
return LOAD_STATUS_NEEDS_RESTART;
}
//initialize up to current level
for (int32_t i = level; i >= minimum_level; i--) {
extension->deinitialize_library(NativeExtension::InitializationLevel(level));
}
}
native_extension_map.erase(p_path);
return LOAD_STATUS_OK;
}
bool NativeExtensionManager::is_extension_loaded(const String &p_path) const {
return native_extension_map.has(p_path);
}
Vector<String> NativeExtensionManager::get_loaded_extensions() const {
Vector<String> ret;
for (const KeyValue<String, Ref<NativeExtension>> &E : native_extension_map) {
ret.push_back(E.key);
}
return ret;
}
Ref<NativeExtension> NativeExtensionManager::get_extension(const String &p_path) {
Map<String, Ref<NativeExtension>>::Element *E = native_extension_map.find(p_path);
ERR_FAIL_COND_V(!E, Ref<NativeExtension>());
return E->get();
}
void NativeExtensionManager::initialize_extensions(NativeExtension::InitializationLevel p_level) {
ERR_FAIL_COND(int32_t(p_level) - 1 != level);
for (KeyValue<String, Ref<NativeExtension>> &E : native_extension_map) {
E.value->initialize_library(p_level);
}
level = p_level;
}
void NativeExtensionManager::deinitialize_extensions(NativeExtension::InitializationLevel p_level) {
ERR_FAIL_COND(int32_t(p_level) != level);
for (KeyValue<String, Ref<NativeExtension>> &E : native_extension_map) {
E.value->deinitialize_library(p_level);
}
level = int32_t(p_level) - 1;
}
void NativeExtensionManager::load_extensions() {
FileAccessRef f = FileAccess::open(NativeExtension::get_extension_list_config_file(), FileAccess::READ);
while (f && !f->eof_reached()) {
String s = f->get_line().strip_edges();
if (s != String()) {
LoadStatus err = load_extension(s);
ERR_CONTINUE_MSG(err == LOAD_STATUS_FAILED, "Error loading extension: " + s);
}
}
}
NativeExtensionManager *NativeExtensionManager::get_singleton() {
return singleton;
}
void NativeExtensionManager::_bind_methods() {
ClassDB::bind_method(D_METHOD("load_extension", "path"), &NativeExtensionManager::load_extension);
ClassDB::bind_method(D_METHOD("reload_extension", "path"), &NativeExtensionManager::reload_extension);
ClassDB::bind_method(D_METHOD("unload_extension", "path"), &NativeExtensionManager::unload_extension);
ClassDB::bind_method(D_METHOD("is_extension_loaded", "path"), &NativeExtensionManager::is_extension_loaded);
ClassDB::bind_method(D_METHOD("get_loaded_extensions"), &NativeExtensionManager::get_loaded_extensions);
ClassDB::bind_method(D_METHOD("get_extension", "path"), &NativeExtensionManager::get_extension);
BIND_ENUM_CONSTANT(LOAD_STATUS_OK);
BIND_ENUM_CONSTANT(LOAD_STATUS_FAILED);
BIND_ENUM_CONSTANT(LOAD_STATUS_ALREADY_LOADED);
BIND_ENUM_CONSTANT(LOAD_STATUS_NOT_LOADED);
BIND_ENUM_CONSTANT(LOAD_STATUS_NEEDS_RESTART);
}
NativeExtensionManager *NativeExtensionManager::singleton = nullptr;
NativeExtensionManager::NativeExtensionManager() {
ERR_FAIL_COND(singleton != nullptr);
singleton = this;
}
|