412 lines
17 KiB
C++
412 lines
17 KiB
C++
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/*************************************************************************/
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/* native_extension.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "native_extension.h"
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#include "core/io/config_file.h"
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#include "core/object/class_db.h"
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#include "core/object/method_bind.h"
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#include "core/os/os.h"
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class NativeExtensionMethodBind : public MethodBind {
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GDNativeExtensionClassMethodCall call_func;
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GDNativeExtensionClassMethodPtrCall ptrcall_func;
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GDNativeExtensionClassMethodGetArgumentType get_argument_type_func;
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GDNativeExtensionClassMethodGetArgumentInfo get_argument_info_func;
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GDNativeExtensionClassMethodGetArgumentMetadata get_argument_metadata_func;
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void *method_userdata;
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bool vararg;
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protected:
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virtual Variant::Type _gen_argument_type(int p_arg) const {
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return Variant::Type(get_argument_type_func(method_userdata, p_arg));
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}
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virtual PropertyInfo _gen_argument_type_info(int p_arg) const {
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GDNativePropertyInfo pinfo;
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get_argument_info_func(method_userdata, p_arg, &pinfo);
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PropertyInfo ret;
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ret.type = Variant::Type(pinfo.type);
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ret.name = pinfo.name;
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ret.class_name = pinfo.class_name;
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ret.hint = PropertyHint(pinfo.hint);
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ret.usage = pinfo.usage;
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ret.class_name = pinfo.class_name;
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return ret;
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}
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public:
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virtual GodotTypeInfo::Metadata get_argument_meta(int p_arg) const {
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return GodotTypeInfo::Metadata(get_argument_metadata_func(method_userdata, p_arg));
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}
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virtual Variant call(Object *p_object, const Variant **p_args, int p_arg_count, Callable::CallError &r_error) {
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Variant ret;
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GDExtensionClassInstancePtr extension_instance = p_object->_get_extension_instance();
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GDNativeCallError ce;
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call_func(extension_instance, (const GDNativeVariantPtr *)p_args, p_arg_count, (GDNativeVariantPtr)&ret, &ce);
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r_error.error = Callable::CallError::Error(ce.error);
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r_error.argument = ce.argument;
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r_error.expected = ce.expected;
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return ret;
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}
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virtual void ptrcall(Object *p_object, const void **p_args, void *r_ret) {
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ERR_FAIL_COND_MSG(vararg, "Vararg methods don't have ptrcall support. This is most likely an engine bug.");
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GDExtensionClassInstancePtr extension_instance = p_object->_get_extension_instance();
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ptrcall_func(extension_instance, (const GDNativeTypePtr *)p_args, (GDNativeTypePtr)r_ret);
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}
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virtual bool is_vararg() const {
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return false;
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}
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NativeExtensionMethodBind(const GDNativeExtensionClassMethodInfo *p_method_info) {
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method_userdata = p_method_info->method_userdata;
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call_func = p_method_info->call_func;
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ptrcall_func = p_method_info->ptrcall_func;
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get_argument_type_func = p_method_info->get_argument_type_func;
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get_argument_info_func = p_method_info->get_argument_info_func;
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get_argument_metadata_func = p_method_info->get_argument_metadata_func;
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vararg = p_method_info->method_flags & GDNATIVE_EXTENSION_METHOD_FLAG_VARARG;
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_set_returns(p_method_info->has_return_value);
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_set_const(p_method_info->method_flags & GDNATIVE_EXTENSION_METHOD_FLAG_CONST);
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#ifdef DEBUG_METHODS_ENABLED
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_generate_argument_types(p_method_info->argument_count);
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#endif
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set_argument_count(p_method_info->argument_count);
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}
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};
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static GDNativeInterface gdnative_interface;
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void NativeExtension::_register_extension_class(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_parent_class_name, const GDNativeExtensionClassCreationInfo *p_extension_funcs) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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ERR_FAIL_COND_MSG(String(class_name).is_valid_identifier(), "Attempt to register extension clas '" + class_name + "', which is not a valid class identifier.");
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ERR_FAIL_COND_MSG(ClassDB::class_exists(class_name), "Attempt to register extension class '" + class_name + "', which appears to be already registered.");
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Extension *parent_extension = nullptr;
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StringName parent_class_name = p_parent_class_name;
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if (self->extension_classes.has(parent_class_name)) {
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parent_extension = &self->extension_classes[parent_class_name];
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} else if (ClassDB::class_exists(parent_class_name)) {
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if (ClassDB::get_api_type(parent_class_name) == ClassDB::API_EXTENSION || ClassDB::get_api_type(parent_class_name) == ClassDB::API_EDITOR_EXTENSION) {
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ERR_PRINT("Unimplemented yet");
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//inheriting from another extension
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} else {
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//inheriting from engine class
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}
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} else {
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ERR_FAIL_MSG("Attempt to register an extension class '" + String(class_name) + "' using non-existing parent class '" + String(parent_class_name) + "'");
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}
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self->extension_classes[class_name] = Extension();
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Extension *extension = &self->extension_classes[class_name];
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if (parent_extension) {
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extension->native_extension.parent = &parent_extension->native_extension;
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parent_extension->native_extension.children.push_back(&extension->native_extension);
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}
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extension->native_extension.parent_class_name = parent_class_name;
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extension->native_extension.class_name = class_name;
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extension->native_extension.editor_class = self->level_initialized == INITIALIZATION_LEVEL_EDITOR;
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extension->native_extension.set = p_extension_funcs->set_func;
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extension->native_extension.get = p_extension_funcs->get_func;
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extension->native_extension.get_property_list = p_extension_funcs->get_property_list_func;
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extension->native_extension.free_property_list = p_extension_funcs->free_property_list_func;
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extension->native_extension.notification = p_extension_funcs->notification_func;
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extension->native_extension.to_string = p_extension_funcs->to_string_func;
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extension->native_extension.reference = p_extension_funcs->reference_func;
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extension->native_extension.unreference = p_extension_funcs->unreference_func;
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extension->native_extension.class_userdata = p_extension_funcs->class_userdata;
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extension->native_extension.create_instance = p_extension_funcs->create_instance_func;
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extension->native_extension.free_instance = p_extension_funcs->free_instance_func;
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ClassDB::register_extension_class(&extension->native_extension);
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}
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void NativeExtension::_register_extension_class_method(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const GDNativeExtensionClassMethodInfo *p_method_info) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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StringName method_name = p_method_info->name;
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ERR_FAIL_COND_MSG(self->extension_classes.has(class_name), "Attempt to register extension method '" + String(method_name) + "' for unexisting class '" + class_name + "'.");
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//Extension *extension = &self->extension_classes[class_name];
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NativeExtensionMethodBind *method = memnew(NativeExtensionMethodBind(p_method_info));
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ClassDB::bind_method_custom(class_name, method);
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}
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void NativeExtension::_register_extension_class_integer_constant(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_enum_name, const char *p_constant_name, uint32_t p_constant_value) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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ERR_FAIL_COND_MSG(self->extension_classes.has(class_name), "Attempt to register extension constant '" + String(p_constant_name) + "' for unexisting class '" + class_name + "'.");
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//Extension *extension = &self->extension_classes[class_name];
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ClassDB::bind_integer_constant(class_name, p_enum_name, p_constant_name, p_constant_value);
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}
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void NativeExtension::_register_extension_class_property(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const GDNativePropertyInfo *p_info, const char *p_setter, const char *p_getter) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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ERR_FAIL_COND_MSG(self->extension_classes.has(class_name), "Attempt to register extension class property '" + String(p_info->name) + "' for unexisting class '" + class_name + "'.");
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//Extension *extension = &self->extension_classes[class_name];
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PropertyInfo pinfo;
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pinfo.type = Variant::Type(p_info->type);
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pinfo.name = p_info->name;
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pinfo.class_name = p_info->class_name;
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pinfo.hint = PropertyHint(p_info->hint);
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pinfo.hint_string = p_info->hint_string;
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pinfo.usage = p_info->usage;
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ClassDB::add_property(class_name, pinfo, p_setter, p_getter);
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}
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void NativeExtension::_register_extension_class_signal(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name, const char *p_signal_name, const GDNativePropertyInfo *p_argument_info, GDNativeInt p_argument_count) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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ERR_FAIL_COND_MSG(self->extension_classes.has(class_name), "Attempt to register extension class signal '" + String(p_signal_name) + "' for unexisting class '" + class_name + "'.");
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MethodInfo s;
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s.name = p_signal_name;
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for (int i = 0; i < p_argument_count; i++) {
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PropertyInfo arg;
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arg.type = Variant::Type(p_argument_info[i].type);
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arg.name = p_argument_info[i].name;
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arg.class_name = p_argument_info[i].class_name;
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arg.hint = PropertyHint(p_argument_info[i].hint);
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arg.hint_string = p_argument_info[i].hint_string;
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arg.usage = p_argument_info[i].usage;
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s.arguments.push_back(arg);
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}
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ClassDB::add_signal(class_name, s);
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}
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void NativeExtension::_unregister_extension_class(const GDNativeExtensionClassLibraryPtr p_library, const char *p_class_name) {
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NativeExtension *self = (NativeExtension *)p_library;
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StringName class_name = p_class_name;
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ERR_FAIL_COND_MSG(self->extension_classes.has(class_name), "Attempt to unregister unexisting extension class '" + class_name + "'.");
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Extension *ext = &self->extension_classes[class_name];
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ERR_FAIL_COND_MSG(ext->native_extension.children.size(), "Attempt to unregister class '" + class_name + "' while other extension classes inherit from it.");
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ClassDB::unregister_extension_class(class_name);
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if (ext->native_extension.parent != nullptr) {
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ext->native_extension.parent->children.erase(&ext->native_extension);
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}
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self->extension_classes.erase(class_name);
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}
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Error NativeExtension::open_library(const String &p_path, const String &p_entry_symbol) {
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Error err = OS::get_singleton()->open_dynamic_library(p_path, library, true);
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if (err != OK) {
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return err;
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}
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void *entry_funcptr = nullptr;
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err = OS::get_singleton()->get_dynamic_library_symbol_handle(library, p_entry_symbol, entry_funcptr, false);
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if (err != OK) {
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OS::get_singleton()->close_dynamic_library(library);
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return err;
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}
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GDNativeInitializationFunction initialization_function = (GDNativeInitializationFunction)entry_funcptr;
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initialization_function(&gdnative_interface, this, &initialization);
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level_initialized = -1;
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return OK;
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}
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void NativeExtension::close_library() {
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ERR_FAIL_COND(library == nullptr);
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OS::get_singleton()->close_dynamic_library(library);
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library = nullptr;
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}
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bool NativeExtension::is_library_open() const {
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return library != nullptr;
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}
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NativeExtension::InitializationLevel NativeExtension::get_minimum_library_initialization_level() const {
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ERR_FAIL_COND_V(library == nullptr, INITIALIZATION_LEVEL_CORE);
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return InitializationLevel(initialization.minimum_initialization_level);
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}
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void NativeExtension::initialize_library(InitializationLevel p_level) {
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ERR_FAIL_COND(library == nullptr);
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ERR_FAIL_COND(p_level <= int32_t(level_initialized));
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level_initialized = int32_t(p_level);
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ERR_FAIL_COND(initialization.initialize == nullptr);
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initialization.initialize(initialization.userdata, GDNativeInitializationLevel(p_level));
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}
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void NativeExtension::deinitialize_library(InitializationLevel p_level) {
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ERR_FAIL_COND(library == nullptr);
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ERR_FAIL_COND(p_level > int32_t(level_initialized));
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level_initialized = int32_t(p_level) - 1;
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initialization.deinitialize(initialization.userdata, GDNativeInitializationLevel(p_level));
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}
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void NativeExtension::_bind_methods() {
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ClassDB::bind_method(D_METHOD("open_library", "path", "entry_symbol"), &NativeExtension::open_library);
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ClassDB::bind_method(D_METHOD("close_library"), &NativeExtension::close_library);
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ClassDB::bind_method(D_METHOD("is_library_open"), &NativeExtension::is_library_open);
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ClassDB::bind_method(D_METHOD("get_minimum_library_initialization_level"), &NativeExtension::get_minimum_library_initialization_level);
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ClassDB::bind_method(D_METHOD("initialize_library", "level"), &NativeExtension::initialize_library);
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BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_CORE);
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BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_SERVERS);
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BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_SCENE);
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BIND_ENUM_CONSTANT(INITIALIZATION_LEVEL_EDITOR);
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}
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NativeExtension::NativeExtension() {
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}
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NativeExtension::~NativeExtension() {
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if (library != nullptr) {
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close_library();
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}
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}
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extern void gdnative_setup_interface(GDNativeInterface *p_interface);
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|
|
|
||
|
|
void NativeExtension::initialize_native_extensions() {
|
||
|
|
gdnative_setup_interface(&gdnative_interface);
|
||
|
|
|
||
|
|
gdnative_interface.classdb_register_extension_class = _register_extension_class;
|
||
|
|
gdnative_interface.classdb_register_extension_class_method = _register_extension_class_method;
|
||
|
|
gdnative_interface.classdb_register_extension_class_integer_constant = _register_extension_class_integer_constant;
|
||
|
|
gdnative_interface.classdb_register_extension_class_property = _register_extension_class_property;
|
||
|
|
gdnative_interface.classdb_register_extension_class_signal = _register_extension_class_signal;
|
||
|
|
gdnative_interface.classdb_unregister_extension_class = _unregister_extension_class;
|
||
|
|
}
|
||
|
|
|
||
|
|
RES NativeExtensionResourceLoader::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
|
||
|
|
Ref<ConfigFile> config;
|
||
|
|
config.instantiate();
|
||
|
|
|
||
|
|
Error err = config->load(p_path);
|
||
|
|
|
||
|
|
if (r_error) {
|
||
|
|
*r_error = err;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (err != OK) {
|
||
|
|
return RES();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!config->has_section_key("configuration", "entry_symbol")) {
|
||
|
|
if (r_error) {
|
||
|
|
*r_error = ERR_INVALID_DATA;
|
||
|
|
}
|
||
|
|
return RES();
|
||
|
|
}
|
||
|
|
|
||
|
|
String entry_symbol = config->get_value("configuration", "entry_symbol");
|
||
|
|
|
||
|
|
List<String> libraries;
|
||
|
|
|
||
|
|
config->get_section_keys("libraries", &libraries);
|
||
|
|
|
||
|
|
String library_path;
|
||
|
|
|
||
|
|
for (List<String>::Element *E = libraries.front(); E; E = E->next()) {
|
||
|
|
Vector<String> tags = E->get().split(".");
|
||
|
|
bool all_tags_met = true;
|
||
|
|
for (int i = 0; i < tags.size(); i++) {
|
||
|
|
String tag = tags[i].strip_edges();
|
||
|
|
if (!OS::get_singleton()->has_feature(tag)) {
|
||
|
|
all_tags_met = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (all_tags_met) {
|
||
|
|
library_path = config->get_value("libraries", E->get());
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (library_path != String()) {
|
||
|
|
if (r_error) {
|
||
|
|
*r_error = ERR_FILE_NOT_FOUND;
|
||
|
|
}
|
||
|
|
return RES();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!library_path.is_resource_file()) {
|
||
|
|
library_path = p_path.get_base_dir().plus_file(library_path);
|
||
|
|
}
|
||
|
|
|
||
|
|
Ref<NativeExtension> lib;
|
||
|
|
lib.instantiate();
|
||
|
|
err = lib->open_library(library_path, entry_symbol);
|
||
|
|
|
||
|
|
if (r_error) {
|
||
|
|
*r_error = err;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (err != OK) {
|
||
|
|
return RES();
|
||
|
|
}
|
||
|
|
|
||
|
|
return lib;
|
||
|
|
}
|
||
|
|
|
||
|
|
void NativeExtensionResourceLoader::get_recognized_extensions(List<String> *p_extensions) const {
|
||
|
|
p_extensions->push_back("gdextension");
|
||
|
|
}
|
||
|
|
|
||
|
|
bool NativeExtensionResourceLoader::handles_type(const String &p_type) const {
|
||
|
|
return p_type == "NativeExtension";
|
||
|
|
}
|
||
|
|
|
||
|
|
String NativeExtensionResourceLoader::get_resource_type(const String &p_path) const {
|
||
|
|
String el = p_path.get_extension().to_lower();
|
||
|
|
if (el == "gdextension") {
|
||
|
|
return "NativeExtension";
|
||
|
|
}
|
||
|
|
return "";
|
||
|
|
}
|