[GDnative] add pluginscript \o/

20 files changed, 1937 insertions, 11 deletions

diff --git a/modules/gdnative/SCsub b/modules/gdnative/SCsub
index ba4163aab7..a6ae143947 100644
--- a/modules/gdnative/SCsub
+++ b/modules/gdnative/SCsub
@@ -13,6 +13,7 @@ gdn_env.add_source_files(env.modules_sources, "nativescript/*.cpp")
 gdn_env.Append(CPPPATH=['#modules/gdnative/include/'])
 
 SConscript("nativearvr/SCsub")
+SConscript("pluginscript/SCsub")
 
 def _spaced(e):
     return e if e[-1] == '*' else e + ' '
@@ -26,6 +27,7 @@ def _build_gdnative_api_struct_header(api):
         '#include <gdnative/gdnative.h>',
         '#include <nativearvr/godot_nativearvr.h>',
         '#include <nativescript/godot_nativescript.h>',
+        '#include <pluginscript/godot_pluginscript.h>',
         '',
         '#define GDNATIVE_API_INIT(options) do { extern const godot_gdnative_api_struct *_gdnative_wrapper_api_struct; _gdnative_wrapper_api_struct = options->api_struct; } while (0)',
         '',
@@ -98,6 +100,7 @@ def _build_gdnative_wrapper_code(api):
         '',
         '#include <gdnative/gdnative.h>',
         '#include <nativescript/godot_nativescript.h>',
+        '#include <pluginscript/godot_pluginscript.h>',
         '',
         '#include <gdnative_api_struct.gen.h>',
         '',
diff --git a/modules/gdnative/gdnative/string.cpp b/modules/gdnative/gdnative/string.cpp
index 9b715ce36a..905c513d9d 100644
--- a/modules/gdnative/gdnative/string.cpp
+++ b/modules/gdnative/gdnative/string.cpp
@@ -29,9 +29,9 @@
 /*************************************************************************/
 #include "gdnative/string.h"
 
+#include "core/string_db.h"
+#include "core/ustring.h"
 #include "core/variant.h"
-#include "string_db.h"
-#include "ustring.h"
 
 #include <string.h>
 
diff --git a/modules/gdnative/include/pluginscript/godot_pluginscript.h b/modules/gdnative/include/pluginscript/godot_pluginscript.h
new file mode 100644
index 0000000000..ec109bac83
--- /dev/null
+++ b/modules/gdnative/include/pluginscript/godot_pluginscript.h
@@ -0,0 +1,170 @@
+/*************************************************************************/
+/*  godot_nativescript.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+#ifndef GODOT_PLUGINSCRIPT_H
+#define GODOT_PLUGINSCRIPT_H
+
+#include <gdnative/gdnative.h>
+#include <nativescript/godot_nativescript.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void godot_pluginscript_instance_data;
+typedef void godot_pluginscript_script_data;
+typedef void godot_pluginscript_language_data;
+
+// --- Instance ---
+
+// TODO: use godot_string_name for faster lookup ?
+typedef struct {
+	godot_pluginscript_instance_data *(*init)(godot_pluginscript_script_data *p_data, godot_object *p_owner);
+	void (*finish)(godot_pluginscript_instance_data *p_data);
+
+	godot_bool (*set_prop)(godot_pluginscript_instance_data *p_data, const godot_string *p_name, const godot_variant *p_value);
+	godot_bool (*get_prop)(godot_pluginscript_instance_data *p_data, const godot_string *p_name, godot_variant *r_ret);
+
+	godot_variant (*call_method)(godot_pluginscript_instance_data *p_data,
+			const godot_string_name *p_method, const godot_variant **p_args,
+			int p_argcount, godot_variant_call_error *r_error);
+
+	void (*notification)(godot_pluginscript_instance_data *p_data, int p_notification);
+	// TODO: could this rpc mode stuff be moved to the godot_pluginscript_script_manifest ?
+	godot_method_rpc_mode (*get_rpc_mode)(godot_pluginscript_instance_data *p_data, const godot_string *p_method);
+	godot_method_rpc_mode (*get_rset_mode)(godot_pluginscript_instance_data *p_data, const godot_string *p_variable);
+
+	//this is used by script languages that keep a reference counter of their own
+	//you can make make Ref<> not die when it reaches zero, so deleting the reference
+	//depends entirely from the script.
+	// Note: You can set thoses function pointer to NULL if not needed.
+	void (*refcount_incremented)(godot_pluginscript_instance_data *p_data);
+	bool (*refcount_decremented)(godot_pluginscript_instance_data *p_data); // return true if it can die
+} godot_pluginscript_instance_desc;
+
+// --- Script ---
+
+typedef struct {
+	godot_pluginscript_script_data *data;
+	godot_string_name name;
+	godot_bool is_tool;
+	godot_string_name base;
+
+	// Member lines format: {<string>: <int>}
+	godot_dictionary member_lines;
+	// Method info dictionary format
+	// {
+	//  name: <string>
+	//  args: [<dict:property>]
+	//  default_args: [<variant>]
+	//  return: <dict:property>
+	//  flags: <int>
+	//  rpc_mode: <int:godot_method_rpc_mode>
+	// }
+	godot_array methods;
+	// Same format than for methods
+	godot_array signals;
+	// Property info dictionary format
+	// {
+	//  name: <string>
+	//  type: <int:godot_variant_type>
+	//  hint: <int:godot_property_hint>
+	//  hint_string: <string>
+	//  usage: <int:godot_property_usage_flags>
+	//  default_value: <variant>
+	//  rset_mode: <int:godot_method_rpc_mode>
+	// }
+	godot_array properties;
+} godot_pluginscript_script_manifest;
+
+typedef struct {
+	godot_pluginscript_script_manifest (*init)(godot_pluginscript_language_data *p_data, const godot_string *p_path, const godot_string *p_source, godot_error *r_error);
+	void (*finish)(godot_pluginscript_script_data *p_data);
+	godot_pluginscript_instance_desc instance_desc;
+} godot_pluginscript_script_desc;
+
+// --- Language ---
+
+typedef struct {
+	godot_string_name signature;
+	godot_int call_count;
+	godot_int total_time; // In microseconds
+	godot_int self_time; // In microseconds
+} godot_pluginscript_profiling_data;
+
+typedef struct {
+	const char *name;
+	const char *type;
+	const char *extension;
+	const char **recognized_extensions; // NULL terminated array
+	godot_pluginscript_language_data *(*init)();
+	void (*finish)(godot_pluginscript_language_data *p_data);
+	const char **reserved_words; // NULL terminated array
+	const char **comment_delimiters; // NULL terminated array
+	const char **string_delimiters; // NULL terminated array
+	godot_bool has_named_classes;
+
+	godot_string (*get_template_source_code)(godot_pluginscript_language_data *p_data, const godot_string *p_class_name, const godot_string *p_base_class_name);
+	godot_bool (*validate)(godot_pluginscript_language_data *p_data, const godot_string *p_script, int *r_line_error, int *r_col_error, godot_string *r_test_error, const godot_string *p_path, godot_pool_string_array *r_functions);
+	int (*find_function)(godot_pluginscript_language_data *p_data, const godot_string *p_function, const godot_string *p_code); // Can be NULL
+	godot_string (*make_function)(godot_pluginscript_language_data *p_data, const godot_string *p_class, const godot_string *p_name, const godot_pool_string_array *p_args);
+	godot_error (*complete_code)(godot_pluginscript_language_data *p_data, const godot_string *p_code, const godot_string *p_base_path, godot_object *p_owner, godot_array *r_options, godot_bool *r_force, godot_string *r_call_hint);
+	void (*auto_indent_code)(godot_pluginscript_language_data *p_data, godot_string *p_code, int p_from_line, int p_to_line);
+
+	void (*add_global_constant)(godot_pluginscript_language_data *p_data, const godot_string *p_variable, const godot_variant *p_value);
+	godot_string (*debug_get_error)(godot_pluginscript_language_data *p_data);
+	int (*debug_get_stack_level_count)(godot_pluginscript_language_data *p_data);
+	int (*debug_get_stack_level_line)(godot_pluginscript_language_data *p_data, int p_level);
+	godot_string (*debug_get_stack_level_function)(godot_pluginscript_language_data *p_data, int p_level);
+	godot_string (*debug_get_stack_level_source)(godot_pluginscript_language_data *p_data, int p_level);
+	void (*debug_get_stack_level_locals)(godot_pluginscript_language_data *p_data, int p_level, godot_pool_string_array *p_locals, godot_array *p_values, int p_max_subitems, int p_max_depth);
+	void (*debug_get_stack_level_members)(godot_pluginscript_language_data *p_data, int p_level, godot_pool_string_array *p_members, godot_array *p_values, int p_max_subitems, int p_max_depth);
+	void (*debug_get_globals)(godot_pluginscript_language_data *p_data, godot_pool_string_array *p_locals, godot_array *p_values, int p_max_subitems, int p_max_depth);
+	godot_string (*debug_parse_stack_level_expression)(godot_pluginscript_language_data *p_data, int p_level, const godot_string *p_expression, int p_max_subitems, int p_max_depth);
+
+	// TODO: could this stuff be moved to the godot_pluginscript_language_desc ?
+	void (*get_public_functions)(godot_pluginscript_language_data *p_data, godot_array *r_functions);
+	void (*get_public_constants)(godot_pluginscript_language_data *p_data, godot_dictionary *r_constants);
+
+	void (*profiling_start)(godot_pluginscript_language_data *p_data);
+	void (*profiling_stop)(godot_pluginscript_language_data *p_data);
+	int (*profiling_get_accumulated_data)(godot_pluginscript_language_data *p_data, godot_pluginscript_profiling_data *r_info, int p_info_max);
+	int (*profiling_get_frame_data)(godot_pluginscript_language_data *p_data, godot_pluginscript_profiling_data *r_info, int p_info_max);
+	void (*profiling_frame)(godot_pluginscript_language_data *p_data);
+
+	godot_pluginscript_script_desc script_desc;
+} godot_pluginscript_language_desc;
+
+void GDAPI godot_pluginscript_register_language(const godot_pluginscript_language_desc *language_desc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // GODOT_PLUGINSCRIPT_H
diff --git a/modules/gdnative/nativescript/SCsub b/modules/gdnative/nativescript/SCsub
index 178afec64a..ee3b9c351d 100644
--- a/modules/gdnative/nativescript/SCsub
+++ b/modules/gdnative/nativescript/SCsub
@@ -4,7 +4,6 @@ Import('env')
 
 mod_env = env.Clone()
 mod_env.add_source_files(env.modules_sources, "*.cpp")
-mod_env.Append(CPPPATH='#modules/gdnative')
 mod_env.Append(CPPFLAGS=['-DGDAPI_BUILT_IN'])
 
 if "platform" in env and env["platform"] in ["x11", "iphone"]:
diff --git a/modules/gdnative/nativescript/api_generator.cpp b/modules/gdnative/nativescript/api_generator.cpp
index 9a956ff594..63fb71feb6 100644
--- a/modules/gdnative/nativescript/api_generator.cpp
+++ b/modules/gdnative/nativescript/api_generator.cpp
@@ -31,7 +31,7 @@
 
 #ifdef TOOLS_ENABLED
 
-#include "class_db.h"
+#include "core/class_db.h"
 #include "core/global_constants.h"
 #include "core/pair.h"
 #include "core/project_settings.h"
diff --git a/modules/gdnative/nativescript/api_generator.h b/modules/gdnative/nativescript/api_generator.h
index 56c2d786e6..a8e2eaf0bf 100644
--- a/modules/gdnative/nativescript/api_generator.h
+++ b/modules/gdnative/nativescript/api_generator.h
@@ -30,8 +30,8 @@
 #ifndef API_GENERATOR_H
 #define API_GENERATOR_H
 
+#include "core/typedefs.h"
 #include "core/ustring.h"
-#include "typedefs.h"
 
 Error generate_c_api(const String &p_path);
 
diff --git a/modules/gdnative/nativescript/nativescript.cpp b/modules/gdnative/nativescript/nativescript.cpp
index 52379560b3..49e2cabea9 100644
--- a/modules/gdnative/nativescript/nativescript.cpp
+++ b/modules/gdnative/nativescript/nativescript.cpp
@@ -31,11 +31,11 @@
 
 #include "gdnative/gdnative.h"
 
-#include "global_constants.h"
+#include "core/global_constants.h"
+#include "core/project_settings.h"
 #include "io/file_access_encrypted.h"
 #include "os/file_access.h"
 #include "os/os.h"
-#include "project_settings.h"
 
 #include "scene/main/scene_tree.h"
 #include "scene/resources/scene_format_text.h"
diff --git a/modules/gdnative/nativescript/nativescript.h b/modules/gdnative/nativescript/nativescript.h
index bc7e850d3e..b5db641179 100644
--- a/modules/gdnative/nativescript/nativescript.h
+++ b/modules/gdnative/nativescript/nativescript.h
@@ -30,14 +30,14 @@
 #ifndef NATIVE_SCRIPT_H
 #define NATIVE_SCRIPT_H
 
+#include "core/resource.h"
+#include "core/script_language.h"
+#include "core/self_list.h"
 #include "io/resource_loader.h"
 #include "io/resource_saver.h"
 #include "ordered_hash_map.h"
 #include "os/thread_safe.h"
-#include "resource.h"
 #include "scene/main/node.h"
-#include "script_language.h"
-#include "self_list.h"
 
 #include "modules/gdnative/gdnative.h"
 #include <nativescript/godot_nativescript.h>
diff --git a/modules/gdnative/pluginscript/SCsub b/modules/gdnative/pluginscript/SCsub
new file mode 100644
index 0000000000..2031a4236b
--- /dev/null
+++ b/modules/gdnative/pluginscript/SCsub
@@ -0,0 +1,9 @@
+#!/usr/bin/env python
+
+Import('env')
+Import('env_modules')
+
+env_pluginscript = env_modules.Clone()
+
+env_pluginscript.Append(CPPPATH=['#modules/gdnative/include/'])
+env_pluginscript.add_source_files(env.modules_sources, '*.cpp')
diff --git a/modules/gdnative/pluginscript/pluginscript_instance.cpp b/modules/gdnative/pluginscript/pluginscript_instance.cpp
new file mode 100644
index 0000000000..8f01350826
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_instance.cpp
@@ -0,0 +1,181 @@
+/*************************************************************************/
+/*  pluginscript_instance.cpp                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+// Godot imports
+#include "core/os/os.h"
+#include "core/variant.h"
+// PluginScript imports
+#include "pluginscript_instance.h"
+#include "pluginscript_language.h"
+#include "pluginscript_script.h"
+
+bool PluginScriptInstance::set(const StringName &p_name, const Variant &p_value) {
+	String name = String(p_name);
+	return _desc->set_prop(_data, (const godot_string *)&name, (const godot_variant *)&p_value);
+}
+
+bool PluginScriptInstance::get(const StringName &p_name, Variant &r_ret) const {
+	String name = String(p_name);
+	return _desc->get_prop(_data, (const godot_string *)&name, (godot_variant *)&r_ret);
+}
+
+Ref<Script> PluginScriptInstance::get_script() const {
+	return _script;
+}
+
+ScriptLanguage *PluginScriptInstance::get_language() {
+	return _script->get_language();
+}
+
+Variant::Type PluginScriptInstance::get_property_type(const StringName &p_name, bool *r_is_valid) const {
+	if (!_script->has_property(p_name)) {
+		if (r_is_valid) {
+			*r_is_valid = false;
+		}
+		return Variant::NIL;
+	}
+	if (r_is_valid) {
+		*r_is_valid = true;
+	}
+	return _script->get_property_info(p_name).type;
+}
+
+void PluginScriptInstance::get_property_list(List<PropertyInfo> *p_properties) const {
+	_script->get_script_property_list(p_properties);
+}
+
+void PluginScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
+	_script->get_script_method_list(p_list);
+}
+
+bool PluginScriptInstance::has_method(const StringName &p_method) const {
+	return _script->has_method(p_method);
+}
+
+Variant PluginScriptInstance::call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
+	// TODO: optimize when calling a Godot method from Godot to avoid param conversion ?
+	godot_variant ret = _desc->call_method(
+			_data, (godot_string_name *)&p_method, (const godot_variant **)p_args,
+			p_argcount, (godot_variant_call_error *)&r_error);
+	Variant *var_ret = (Variant *)&ret;
+	return *var_ret;
+}
+
+#if 0 // TODO: Don't rely on default implementations provided by ScriptInstance ?
+void PluginScriptInstance::call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount) {
+
+#if 0
+    PluginScript *sptr=script.ptr();
+    Variant::CallError ce;
+
+    while(sptr) {
+        Map<StringName,GDFunction*>::Element *E = sptr->member_functions.find(p_method);
+        if (E) {
+            E->get()->call(this,p_args,p_argcount,ce);
+        }
+        sptr = sptr->_base;
+    }
+#endif
+
+}
+
+#if 0
+void PluginScriptInstance::_ml_call_reversed(PluginScript *sptr,const StringName& p_method,const Variant** p_args,int p_argcount) {
+
+    if (sptr->_base)
+        _ml_call_reversed(sptr->_base,p_method,p_args,p_argcount);
+
+    Variant::CallError ce;
+
+    Map<StringName,GDFunction*>::Element *E = sptr->member_functions.find(p_method);
+    if (E) {
+        E->get()->call(this,p_args,p_argcount,ce);
+    }
+
+}
+#endif
+
+
+void PluginScriptInstance::call_multilevel_reversed(const StringName& p_method,const Variant** p_args,int p_argcount) {
+
+#if 0
+    if (script.ptr()) {
+        _ml_call_reversed(script.ptr(),p_method,p_args,p_argcount);
+    }
+#endif
+}
+#endif // Multilevel stuff
+
+void PluginScriptInstance::notification(int p_notification) {
+	_desc->notification(_data, p_notification);
+}
+
+ScriptInstance::RPCMode PluginScriptInstance::get_rpc_mode(const StringName &p_method) const {
+	return _script->get_rpc_mode(p_method);
+}
+
+ScriptInstance::RPCMode PluginScriptInstance::get_rset_mode(const StringName &p_variable) const {
+	return _script->get_rset_mode(p_variable);
+}
+
+void PluginScriptInstance::refcount_incremented() {
+	if (_desc->refcount_decremented) {
+		_desc->refcount_incremented(_data);
+	}
+}
+
+bool PluginScriptInstance::refcount_decremented() {
+	// Return true if it can die
+	if (_desc->refcount_decremented) {
+		return _desc->refcount_decremented(_data);
+	}
+	return true;
+}
+
+PluginScriptInstance::PluginScriptInstance() {
+}
+
+bool PluginScriptInstance::init(PluginScript *p_script, Object *p_owner) {
+	_owner = p_owner;
+	_owner_variant = Variant(p_owner);
+	_script = Ref<PluginScript>(p_script);
+	_desc = &p_script->_desc->instance_desc;
+	_data = _desc->init(p_script->_data, (godot_object *)p_owner);
+	ERR_FAIL_COND_V(_data == NULL, false);
+	p_owner->set_script_instance(this);
+	return true;
+}
+
+PluginScriptInstance::~PluginScriptInstance() {
+	_desc->finish(_data);
+	_script->_language->lock();
+	_script->_instances.erase(_owner);
+	_script->_language->unlock();
+}
diff --git a/modules/gdnative/pluginscript/pluginscript_instance.h b/modules/gdnative/pluginscript/pluginscript_instance.h
new file mode 100644
index 0000000000..68696b4417
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_instance.h
@@ -0,0 +1,90 @@
+/*************************************************************************/
+/*  pluginscript_instance.h                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+#ifndef PLUGINSCRIPT_INSTANCE_H
+#define PLUGINSCRIPT_INSTANCE_H
+
+// Godot imports
+#include "core/script_language.h"
+// PluginScript imports
+#include <pluginscript/godot_pluginscript.h>
+
+class PluginScript;
+
+class PluginScriptInstance : public ScriptInstance {
+	friend class PluginScript;
+
+private:
+	Ref<PluginScript> _script;
+	Object *_owner;
+	Variant _owner_variant;
+	godot_pluginscript_instance_data *_data;
+	const godot_pluginscript_instance_desc *_desc;
+
+public:
+	_FORCE_INLINE_ Object *get_owner() { return _owner; }
+
+	virtual bool set(const StringName &p_name, const Variant &p_value);
+	virtual bool get(const StringName &p_name, Variant &r_ret) const;
+	virtual void get_property_list(List<PropertyInfo> *p_properties) const;
+	virtual Variant::Type get_property_type(const StringName &p_name, bool *r_is_valid = NULL) const;
+
+	virtual void get_method_list(List<MethodInfo> *p_list) const;
+	virtual bool has_method(const StringName &p_method) const;
+
+	virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Variant::CallError &r_error);
+#if 0
+    // Rely on default implementations provided by ScriptInstance for the moment.
+    // Note that multilevel call could be removed in 3.0 release, so stay tunned
+    // (see https://godotengine.org/qa/9244/can-override-the-_ready-and-_process-functions-child-classes)
+    virtual void call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount);
+    virtual void call_multilevel_reversed(const StringName& p_method,const Variant** p_args,int p_argcount);
+#endif
+
+	virtual void notification(int p_notification);
+
+	virtual Ref<Script> get_script() const;
+
+	virtual ScriptLanguage *get_language();
+
+	void set_path(const String &p_path);
+
+	virtual RPCMode get_rpc_mode(const StringName &p_method) const;
+	virtual RPCMode get_rset_mode(const StringName &p_variable) const;
+
+	virtual void refcount_incremented();
+	virtual bool refcount_decremented();
+
+	PluginScriptInstance();
+	bool init(PluginScript *p_script, Object *p_owner);
+	virtual ~PluginScriptInstance();
+};
+
+#endif // PLUGINSCRIPT_INSTANCE_H
diff --git a/modules/gdnative/pluginscript/pluginscript_language.cpp b/modules/gdnative/pluginscript/pluginscript_language.cpp
new file mode 100644
index 0000000000..2198e66ae4
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_language.cpp
@@ -0,0 +1,432 @@
+/*************************************************************************/
+/*  pluginscript_language.cpp                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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 <stdlib.h>
+// Godot imports
+#include "core/os/file_access.h"
+#include "core/os/os.h"
+#include "core/project_settings.h"
+// PluginScript imports
+#include "pluginscript_language.h"
+#include "pluginscript_script.h"
+
+String PluginScriptLanguage::get_name() const {
+	return String(_desc.name);
+}
+
+void PluginScriptLanguage::init() {
+	_data = _desc.init();
+}
+
+String PluginScriptLanguage::get_type() const {
+	return String(_desc.type);
+}
+
+String PluginScriptLanguage::get_extension() const {
+	return String(_desc.extension);
+}
+
+Error PluginScriptLanguage::execute_file(const String &p_path) {
+	// TODO: pretty sure this method is totally deprecated and should be removed...
+	return OK;
+}
+
+void PluginScriptLanguage::finish() {
+	_desc.finish(_data);
+}
+
+/* EDITOR FUNCTIONS */
+
+void PluginScriptLanguage::get_reserved_words(List<String> *p_words) const {
+	if (_desc.reserved_words) {
+		const char **w = _desc.reserved_words;
+		while (*w) {
+			p_words->push_back(*w);
+			w++;
+		}
+	}
+}
+
+void PluginScriptLanguage::get_comment_delimiters(List<String> *p_delimiters) const {
+	if (_desc.comment_delimiters) {
+		const char **w = _desc.comment_delimiters;
+		while (*w) {
+			p_delimiters->push_back(*w);
+			w++;
+		}
+	}
+}
+
+void PluginScriptLanguage::get_string_delimiters(List<String> *p_delimiters) const {
+	if (_desc.string_delimiters) {
+		const char **w = _desc.string_delimiters;
+		while (*w) {
+			p_delimiters->push_back(*w);
+			w++;
+		}
+	}
+}
+
+Ref<Script> PluginScriptLanguage::get_template(const String &p_class_name, const String &p_base_class_name) const {
+	Script *ns = create_script();
+	Ref<Script> script = Ref<Script>(ns);
+	if (_desc.get_template_source_code) {
+		godot_string src = _desc.get_template_source_code(_data, (godot_string *)&p_class_name, (godot_string *)&p_base_class_name);
+		script->set_source_code(*(String *)&src);
+	}
+	return script;
+}
+
+bool PluginScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions) const {
+	PoolStringArray functions;
+	if (_desc.validate) {
+		bool ret = _desc.validate(
+				_data,
+				(godot_string *)&p_script,
+				&r_line_error,
+				&r_col_error,
+				(godot_string *)&r_test_error,
+				(godot_string *)&p_path,
+				(godot_pool_string_array *)&functions);
+		for (int i = 0; i < functions.size(); i++) {
+			r_functions->push_back(functions[i]);
+		}
+		return ret;
+	}
+	return true;
+}
+
+Script *PluginScriptLanguage::create_script() const {
+	PluginScript *script = memnew(PluginScript());
+	// I'm hurting kittens doing this I guess...
+	script->init(const_cast<PluginScriptLanguage *>(this));
+	return script;
+}
+
+bool PluginScriptLanguage::has_named_classes() const {
+	return _desc.has_named_classes;
+}
+
+int PluginScriptLanguage::find_function(const String &p_function, const String &p_code) const {
+	if (_desc.find_function) {
+		return _desc.find_function(_data, (godot_string *)&p_function, (godot_string *)&p_code);
+	}
+	return -1;
+}
+
+String PluginScriptLanguage::make_function(const String &p_class, const String &p_name, const PoolStringArray &p_args) const {
+	if (_desc.make_function) {
+		godot_string tmp = _desc.make_function(_data, (godot_string *)&p_class, (godot_string *)&p_name, (godot_pool_string_array *)&p_args);
+		String ret = *(String *)&tmp;
+		godot_string_destroy(&tmp);
+		return ret;
+	}
+	return String();
+}
+
+Error PluginScriptLanguage::complete_code(const String &p_code, const String &p_base_path, Object *p_owner, List<String> *r_options, bool &r_force, String &r_call_hint) {
+	if (_desc.complete_code) {
+		Array options;
+		godot_error tmp = _desc.complete_code(
+				_data,
+				(godot_string *)&p_code,
+				(godot_string *)&p_base_path,
+				(godot_object *)p_owner,
+				(godot_array *)&options,
+				&r_force,
+				(godot_string *)&r_call_hint);
+		for (int i = 0; i < options.size(); i++) {
+			r_options->push_back(String(options[i]));
+		}
+		Error err = *(Error *)tmp;
+		return err;
+	}
+	return ERR_UNAVAILABLE;
+}
+
+void PluginScriptLanguage::auto_indent_code(String &p_code, int p_from_line, int p_to_line) const {
+	if (_desc.auto_indent_code) {
+		_desc.auto_indent_code(_data, (godot_string *)&p_code, p_from_line, p_to_line);
+	}
+	return;
+}
+
+void PluginScriptLanguage::add_global_constant(const StringName &p_variable, const Variant &p_value) {
+	const String variable = String(p_variable);
+	_desc.add_global_constant(_data, (godot_string *)&variable, (godot_variant *)&p_value);
+}
+
+/* LOADER FUNCTIONS */
+
+void PluginScriptLanguage::get_recognized_extensions(List<String> *p_extensions) const {
+	for (int i = 0; _desc.recognized_extensions[i]; ++i) {
+		p_extensions->push_back(String(_desc.recognized_extensions[i]));
+	}
+}
+
+void PluginScriptLanguage::get_public_functions(List<MethodInfo> *p_functions) const {
+	// TODO: provid this statically in `godot_pluginscript_language_desc` ?
+	if (_desc.get_public_functions) {
+		Array functions;
+		_desc.get_public_functions(_data, (godot_array *)&functions);
+		for (int i = 0; i < functions.size(); i++) {
+			MethodInfo mi = MethodInfo::from_dict(functions[i]);
+			p_functions->push_back(mi);
+		}
+	}
+}
+
+void PluginScriptLanguage::get_public_constants(List<Pair<String, Variant> > *p_constants) const {
+	// TODO: provid this statically in `godot_pluginscript_language_desc` ?
+	if (_desc.get_public_constants) {
+		Dictionary constants;
+		_desc.get_public_constants(_data, (godot_dictionary *)&constants);
+		for (const Variant *key = constants.next(); key; key = constants.next(key)) {
+			Variant value = constants[key];
+			p_constants->push_back(Pair<String, Variant>(*key, value));
+		}
+	}
+}
+
+void PluginScriptLanguage::profiling_start() {
+#ifdef DEBUG_ENABLED
+	if (_desc.profiling_start) {
+		lock();
+		_desc.profiling_start(_data);
+		unlock();
+	}
+#endif
+}
+
+void PluginScriptLanguage::profiling_stop() {
+#ifdef DEBUG_ENABLED
+	if (_desc.profiling_stop) {
+		lock();
+		_desc.profiling_stop(_data);
+		unlock();
+	}
+#endif
+}
+
+int PluginScriptLanguage::profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max) {
+	int info_count = 0;
+#ifdef DEBUG_ENABLED
+	if (_desc.profiling_get_accumulated_data) {
+		godot_pluginscript_profiling_data *info = (godot_pluginscript_profiling_data *)memalloc(
+				sizeof(godot_pluginscript_profiling_data) * p_info_max);
+		info_count = _desc.profiling_get_accumulated_data(_data, info, p_info_max);
+		for (int i = 0; i < info_count; ++i) {
+			p_info_arr[i].signature = *(StringName *)&info[i].signature;
+			p_info_arr[i].call_count = info[i].call_count;
+			p_info_arr[i].total_time = info[i].total_time;
+			p_info_arr[i].self_time = info[i].self_time;
+			godot_string_name_destroy(&info[i].signature);
+		}
+	}
+#endif
+	return info_count;
+}
+
+int PluginScriptLanguage::profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max) {
+	int info_count = 0;
+#ifdef DEBUG_ENABLED
+	if (_desc.profiling_get_frame_data) {
+		godot_pluginscript_profiling_data *info = (godot_pluginscript_profiling_data *)memalloc(
+				sizeof(godot_pluginscript_profiling_data) * p_info_max);
+		info_count = _desc.profiling_get_frame_data(_data, info, p_info_max);
+		for (int i = 0; i < info_count; ++i) {
+			p_info_arr[i].signature = *(StringName *)&info[i].signature;
+			p_info_arr[i].call_count = info[i].call_count;
+			p_info_arr[i].total_time = info[i].total_time;
+			p_info_arr[i].self_time = info[i].self_time;
+			godot_string_name_destroy(&info[i].signature);
+		}
+	}
+#endif
+	return info_count;
+}
+
+void PluginScriptLanguage::frame() {
+#ifdef DEBUG_ENABLED
+	if (_desc.profiling_frame) {
+		_desc.profiling_frame(_data);
+	}
+#endif
+}
+
+/* DEBUGGER FUNCTIONS */
+
+String PluginScriptLanguage::debug_get_error() const {
+	if (_desc.debug_get_error) {
+		godot_string tmp = _desc.debug_get_error(_data);
+		String ret = *(String *)&tmp;
+		godot_string_destroy(&tmp);
+		return ret;
+	}
+	return String("Nothing");
+}
+
+int PluginScriptLanguage::debug_get_stack_level_count() const {
+	if (_desc.debug_get_stack_level_count) {
+		return _desc.debug_get_stack_level_count(_data);
+	}
+	return 1;
+}
+
+int PluginScriptLanguage::debug_get_stack_level_line(int p_level) const {
+	if (_desc.debug_get_stack_level_line) {
+		return _desc.debug_get_stack_level_line(_data, p_level);
+	}
+	return 1;
+}
+
+String PluginScriptLanguage::debug_get_stack_level_function(int p_level) const {
+	if (_desc.debug_get_stack_level_function) {
+		godot_string tmp = _desc.debug_get_stack_level_function(_data, p_level);
+		String ret = *(String *)&tmp;
+		godot_string_destroy(&tmp);
+		return ret;
+	}
+	return String("Nothing");
+}
+
+String PluginScriptLanguage::debug_get_stack_level_source(int p_level) const {
+	if (_desc.debug_get_stack_level_source) {
+		godot_string tmp = _desc.debug_get_stack_level_source(_data, p_level);
+		String ret = *(String *)&tmp;
+		godot_string_destroy(&tmp);
+		return ret;
+	}
+	return String("Nothing");
+}
+
+void PluginScriptLanguage::debug_get_stack_level_locals(int p_level, List<String> *p_locals, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
+	if (_desc.debug_get_stack_level_locals) {
+		PoolStringArray locals;
+		Array values;
+		_desc.debug_get_stack_level_locals(_data, p_level, (godot_pool_string_array *)&locals, (godot_array *)&values, p_max_subitems, p_max_depth);
+		for (int i = 0; i < locals.size(); i++) {
+			p_locals->push_back(locals[i]);
+		}
+		for (int i = 0; i < values.size(); i++) {
+			p_values->push_back(values[i]);
+		}
+	}
+}
+
+void PluginScriptLanguage::debug_get_stack_level_members(int p_level, List<String> *p_members, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
+	if (_desc.debug_get_stack_level_members) {
+		PoolStringArray members;
+		Array values;
+		_desc.debug_get_stack_level_members(_data, p_level, (godot_pool_string_array *)&members, (godot_array *)&values, p_max_subitems, p_max_depth);
+		for (int i = 0; i < members.size(); i++) {
+			p_members->push_back(members[i]);
+		}
+		for (int i = 0; i < values.size(); i++) {
+			p_values->push_back(values[i]);
+		}
+	}
+}
+
+void PluginScriptLanguage::debug_get_globals(List<String> *p_locals, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
+	if (_desc.debug_get_globals) {
+		PoolStringArray locals;
+		Array values;
+		_desc.debug_get_globals(_data, (godot_pool_string_array *)&locals, (godot_array *)&values, p_max_subitems, p_max_depth);
+		for (int i = 0; i < locals.size(); i++) {
+			p_locals->push_back(locals[i]);
+		}
+		for (int i = 0; i < values.size(); i++) {
+			p_values->push_back(values[i]);
+		}
+	}
+}
+
+String PluginScriptLanguage::debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems, int p_max_depth) {
+	if (_desc.debug_parse_stack_level_expression) {
+		godot_string tmp = _desc.debug_parse_stack_level_expression(_data, p_level, (godot_string *)&p_expression, p_max_subitems, p_max_depth);
+		String ret = *(String *)&tmp;
+		godot_string_destroy(&tmp);
+		return ret;
+	}
+	return String("Nothing");
+}
+
+void PluginScriptLanguage::reload_all_scripts() {
+	// TODO
+}
+
+void PluginScriptLanguage::reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload) {
+#ifdef DEBUG_ENABLED
+	lock();
+	// TODO
+	unlock();
+#endif
+}
+
+void PluginScriptLanguage::lock() {
+#ifndef NO_THREADS
+	if (_lock) {
+		_lock->lock();
+	}
+#endif
+}
+
+void PluginScriptLanguage::unlock() {
+#ifndef NO_THREADS
+	if (_lock) {
+		_lock->unlock();
+	}
+#endif
+}
+
+PluginScriptLanguage::PluginScriptLanguage(const godot_pluginscript_language_desc *desc)
+	: _desc(*desc) {
+	_resource_loader = memnew(ResourceFormatLoaderPluginScript(this));
+	_resource_saver = memnew(ResourceFormatSaverPluginScript(this));
+
+// TODO: totally remove _lock attribute if NO_THREADS is set
+#ifdef NO_THREADS
+	_lock = NULL;
+#else
+	_lock = Mutex::create();
+#endif
+}
+
+PluginScriptLanguage::~PluginScriptLanguage() {
+	memdelete(_resource_loader);
+	memdelete(_resource_saver);
+#ifndef NO_THREADS
+	if (_lock) {
+		memdelete(_lock);
+		_lock = NULL;
+	}
+#endif
+}
diff --git a/modules/gdnative/pluginscript/pluginscript_language.h b/modules/gdnative/pluginscript/pluginscript_language.h
new file mode 100644
index 0000000000..a48dde97ce
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_language.h
@@ -0,0 +1,131 @@
+/*************************************************************************/
+/*  pluginscript_language.h                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+#ifndef PLUGINSCRIPT_LANGUAGE_H
+#define PLUGINSCRIPT_LANGUAGE_H
+
+// Godot imports
+#include "core/io/resource_loader.h"
+#include "core/io/resource_saver.h"
+#include "core/map.h"
+#include "core/script_language.h"
+#include "core/self_list.h"
+// PluginScript imports
+#include "pluginscript_loader.h"
+#include <pluginscript/godot_pluginscript.h>
+
+class PluginScript;
+class PluginScriptInstance;
+
+class PluginScriptLanguage : public ScriptLanguage {
+	friend class PluginScript;
+	friend class PluginScriptInstance;
+
+	ResourceFormatLoaderPluginScript *_resource_loader;
+	ResourceFormatSaverPluginScript *_resource_saver;
+	const godot_pluginscript_language_desc _desc;
+	godot_pluginscript_language_data *_data;
+
+	Mutex *_lock;
+	SelfList<PluginScript>::List _script_list;
+
+public:
+	virtual String get_name() const;
+
+	_FORCE_INLINE_ ResourceFormatLoaderPluginScript *get_resource_loader() { return _resource_loader; };
+	_FORCE_INLINE_ ResourceFormatSaverPluginScript *get_resource_saver() { return _resource_saver; };
+
+	/* LANGUAGE FUNCTIONS */
+	virtual void init();
+	virtual String get_type() const;
+	virtual String get_extension() const;
+	virtual Error execute_file(const String &p_path);
+	virtual void finish();
+
+	/* EDITOR FUNCTIONS */
+	virtual void get_reserved_words(List<String> *p_words) const;
+	virtual void get_comment_delimiters(List<String> *p_delimiters) const;
+	virtual void get_string_delimiters(List<String> *p_delimiters) const;
+	virtual Ref<Script> get_template(const String &p_class_name, const String &p_base_class_name) const;
+	virtual bool validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path = "", List<String> *r_functions = NULL) const;
+	virtual Script *create_script() const;
+	virtual bool has_named_classes() const;
+	virtual bool can_inherit_from_file() { return true; }
+	virtual int find_function(const String &p_function, const String &p_code) const;
+	virtual String make_function(const String &p_class, const String &p_name, const PoolStringArray &p_args) const;
+	virtual Error complete_code(const String &p_code, const String &p_base_path, Object *p_owner, List<String> *r_options, bool &r_force, String &r_call_hint);
+	virtual void auto_indent_code(String &p_code, int p_from_line, int p_to_line) const;
+	virtual void add_global_constant(const StringName &p_variable, const Variant &p_value);
+
+	/* MULTITHREAD FUNCTIONS */
+
+	//some VMs need to be notified of thread creation/exiting to allocate a stack
+	// void thread_enter() {}
+	// void thread_exit() {}
+
+	/* DEBUGGER FUNCTIONS */
+
+	virtual String debug_get_error() const;
+	virtual int debug_get_stack_level_count() const;
+	virtual int debug_get_stack_level_line(int p_level) const;
+	virtual String debug_get_stack_level_function(int p_level) const;
+	virtual String debug_get_stack_level_source(int p_level) const;
+	virtual void debug_get_stack_level_locals(int p_level, List<String> *p_locals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
+	virtual void debug_get_stack_level_members(int p_level, List<String> *p_members, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
+	virtual void debug_get_globals(List<String> *p_locals, List<Variant> *p_values, int p_max_subitems = -1, int p_max_depth = -1);
+	virtual String debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems = -1, int p_max_depth = -1);
+
+	// virtual Vector<StackInfo> debug_get_current_stack_info() { return Vector<StackInfo>(); }
+
+	virtual void reload_all_scripts();
+	virtual void reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload);
+
+	/* LOADER FUNCTIONS */
+
+	virtual void get_recognized_extensions(List<String> *p_extensions) const;
+	virtual void get_public_functions(List<MethodInfo> *p_functions) const;
+	virtual void get_public_constants(List<Pair<String, Variant> > *p_constants) const;
+
+	virtual void profiling_start();
+	virtual void profiling_stop();
+
+	virtual int profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max);
+	virtual int profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max);
+
+	virtual void frame();
+
+	void lock();
+	void unlock();
+
+	PluginScriptLanguage(const godot_pluginscript_language_desc *desc);
+	virtual ~PluginScriptLanguage();
+};
+
+#endif // PLUGINSCRIPT_LANGUAGE_H
diff --git a/modules/gdnative/pluginscript/pluginscript_loader.cpp b/modules/gdnative/pluginscript/pluginscript_loader.cpp
new file mode 100644
index 0000000000..3648e1a5b4
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_loader.cpp
@@ -0,0 +1,113 @@
+/*************************************************************************/
+/*  pluginscript_loader.cpp                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+// Godot imports
+#include "os/file_access.h"
+// Pythonscript imports
+#include "pluginscript_language.h"
+#include "pluginscript_loader.h"
+#include "pluginscript_script.h"
+
+ResourceFormatLoaderPluginScript::ResourceFormatLoaderPluginScript(PluginScriptLanguage *language) {
+	_language = language;
+}
+
+RES ResourceFormatLoaderPluginScript::load(const String &p_path, const String &p_original_path, Error *r_error) {
+	if (r_error)
+		*r_error = ERR_FILE_CANT_OPEN;
+
+	PluginScript *script = memnew(PluginScript);
+	script->init(_language);
+
+	Ref<PluginScript> scriptres(script);
+
+	Error err = script->load_source_code(p_path);
+	ERR_FAIL_COND_V(err != OK, RES());
+
+	script->set_path(p_original_path);
+
+	script->reload();
+
+	if (r_error)
+		*r_error = OK;
+
+	return scriptres;
+}
+
+void ResourceFormatLoaderPluginScript::get_recognized_extensions(List<String> *p_extensions) const {
+	p_extensions->push_back(_language->get_extension());
+}
+
+bool ResourceFormatLoaderPluginScript::handles_type(const String &p_type) const {
+	return p_type == "Script" || p_type == _language->get_type();
+}
+
+String ResourceFormatLoaderPluginScript::get_resource_type(const String &p_path) const {
+	String el = p_path.get_extension().to_lower();
+	if (el == _language->get_extension())
+		return _language->get_type();
+	return "";
+}
+
+ResourceFormatSaverPluginScript::ResourceFormatSaverPluginScript(PluginScriptLanguage *language) {
+	_language = language;
+}
+
+Error ResourceFormatSaverPluginScript::save(const String &p_path, const RES &p_resource, uint32_t p_flags) {
+	Ref<PluginScript> sqscr = p_resource;
+	ERR_FAIL_COND_V(sqscr.is_null(), ERR_INVALID_PARAMETER);
+
+	String source = sqscr->get_source_code();
+
+	Error err;
+	FileAccess *file = FileAccess::open(p_path, FileAccess::WRITE, &err);
+	ERR_FAIL_COND_V(err, err);
+
+	file->store_string(source);
+	if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) {
+		memdelete(file);
+		return ERR_CANT_CREATE;
+	}
+	file->close();
+	memdelete(file);
+	return OK;
+}
+
+void ResourceFormatSaverPluginScript::get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const {
+
+	if (Object::cast_to<PluginScript>(*p_resource)) {
+		p_extensions->push_back(_language->get_extension());
+	}
+}
+
+bool ResourceFormatSaverPluginScript::recognize(const RES &p_resource) const {
+
+	return Object::cast_to<PluginScript>(*p_resource) != NULL;
+}
diff --git a/modules/gdnative/pluginscript/pluginscript_loader.h b/modules/gdnative/pluginscript/pluginscript_loader.h
new file mode 100644
index 0000000000..b85e7725a1
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_loader.h
@@ -0,0 +1,62 @@
+/*************************************************************************/
+/*  pluginscript_loader.h                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+#ifndef PYTHONSCRIPT_PY_LOADER_H
+#define PYTHONSCRIPT_PY_LOADER_H
+
+// Godot imports
+#include "core/script_language.h"
+#include "io/resource_loader.h"
+#include "io/resource_saver.h"
+
+class PluginScriptLanguage;
+
+class ResourceFormatLoaderPluginScript : public ResourceFormatLoader {
+	PluginScriptLanguage *_language;
+
+public:
+	ResourceFormatLoaderPluginScript(PluginScriptLanguage *language);
+	virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
+	virtual void get_recognized_extensions(List<String> *p_extensions) const;
+	virtual bool handles_type(const String &p_type) const;
+	virtual String get_resource_type(const String &p_path) const;
+};
+
+class ResourceFormatSaverPluginScript : public ResourceFormatSaver {
+	PluginScriptLanguage *_language;
+
+public:
+	ResourceFormatSaverPluginScript(PluginScriptLanguage *language);
+	virtual Error save(const String &p_path, const RES &p_resource, uint32_t p_flags = 0);
+	virtual void get_recognized_extensions(const RES &p_resource, List<String> *p_extensions) const;
+	virtual bool recognize(const RES &p_resource) const;
+};
+
+#endif // PYTHONSCRIPT_PY_LOADER_H
diff --git a/modules/gdnative/pluginscript/pluginscript_script.cpp b/modules/gdnative/pluginscript/pluginscript_script.cpp
new file mode 100644
index 0000000000..7dd10a8bdf
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_script.cpp
@@ -0,0 +1,454 @@
+/*************************************************************************/
+/*  pluginscript_script.cpp                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+// Godot imports
+#include "core/os/file_access.h"
+// PluginScript imports
+#include "pluginscript_instance.h"
+#include "pluginscript_script.h"
+
+#if DEBUG_ENABLED
+#define __ASSERT_SCRIPT_REASON "Cannot retrieve pluginscript class for this script, is you code correct ?"
+#define ASSERT_SCRIPT_VALID()                \
+	{                                        \
+		ERR_EXPLAIN(__ASSERT_SCRIPT_REASON); \
+		ERR_FAIL_COND(!can_instance())       \
+	}
+#define ASSERT_SCRIPT_VALID_V(ret)            \
+	{                                         \
+		ERR_EXPLAIN(__ASSERT_SCRIPT_REASON);  \
+		ERR_FAIL_COND_V(!can_instance(), ret) \
+	}
+#else
+#define ASSERT_SCRIPT_VALID()
+#define ASSERT_SCRIPT_VALID_V(ret)
+#endif
+
+void PluginScript::_bind_methods() {
+}
+
+#ifdef TOOLS_ENABLED
+
+void PluginScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {
+	placeholders.erase(p_placeholder);
+}
+
+#endif
+
+bool PluginScript::can_instance() const {
+	bool can = _valid || (!_tool && !ScriptServer::is_scripting_enabled());
+	return can;
+}
+
+Ref<Script> PluginScript::get_base_script() const {
+	if (_ref_base_parent.is_valid()) {
+		return Ref<PluginScript>(_ref_base_parent);
+	} else {
+		return Ref<Script>();
+	}
+}
+
+StringName PluginScript::get_instance_base_type() const {
+	if (_native_parent)
+		return _native_parent;
+	if (_ref_base_parent.is_valid())
+		return _ref_base_parent->get_instance_base_type();
+	return StringName();
+}
+
+void PluginScript::update_exports() {
+// TODO
+#ifdef TOOLS_ENABLED
+#if 0
+	ASSERT_SCRIPT_VALID();
+	if (/*changed &&*/ placeholders.size()) { //hm :(
+
+		//update placeholders if any
+		Map<StringName, Variant> propdefvalues;
+		List<PropertyInfo> propinfos;
+		const String *props = (const String *)pybind_get_prop_list(_py_exposed_class);
+		for (int i = 0; props[i] != ""; ++i) {
+			const String propname = props[i];
+			pybind_get_prop_default_value(_py_exposed_class, propname.c_str(), (godot_variant *)&propdefvalues[propname]);
+			pybind_prop_info raw_info;
+			pybind_get_prop_info(_py_exposed_class, propname.c_str(), &raw_info);
+			PropertyInfo info;
+			info.type = (Variant::Type)raw_info.type;
+			info.name = propname;
+			info.hint = (PropertyHint)raw_info.hint;
+			info.hint_string = *(String *)&raw_info.hint_string;
+			info.usage = raw_info.usage;
+			propinfos.push_back(info);
+		}
+		for (Set<PlaceHolderScriptInstance *>::Element *E = placeholders.front(); E; E = E->next()) {
+			E->get()->update(propinfos, propdefvalues);
+		}
+	}
+#endif
+#endif
+}
+
+// TODO: rename p_this "p_owner" ?
+ScriptInstance *PluginScript::instance_create(Object *p_this) {
+	ASSERT_SCRIPT_VALID_V(NULL);
+	// TODO check script validity ?
+	if (!_tool && !ScriptServer::is_scripting_enabled()) {
+#ifdef TOOLS_ENABLED
+		// Instance a fake script for editing the values
+		PlaceHolderScriptInstance *si = memnew(PlaceHolderScriptInstance(get_language(), Ref<Script>(this), p_this));
+		placeholders.insert(si);
+		update_exports();
+		return si;
+#else
+		return NULL;
+#endif
+	}
+
+	PluginScript *top = this;
+	// TODO: can be optimized by storing a PluginScript::_base_parent direct pointer
+	while (top->_ref_base_parent.is_valid())
+		top = top->_ref_base_parent.ptr();
+	if (top->_native_parent) {
+		if (!ClassDB::is_parent_class(p_this->get_class_name(), top->_native_parent)) {
+			String msg = "Script inherits from native type '" + String(top->_native_parent) + "', so it can't be instanced in object of type: '" + p_this->get_class() + "'";
+			// TODO: implement PluginscriptLanguage::debug_break_parse
+			// if (ScriptDebugger::get_singleton()) {
+			// 	_language->debug_break_parse(get_path(), 0, msg);
+			// }
+			ERR_EXPLAIN(msg);
+			ERR_FAIL_V(NULL);
+		}
+	}
+
+	PluginScriptInstance *instance = memnew(PluginScriptInstance());
+	const bool success = instance->init(this, p_this);
+	if (success) {
+		_language->lock();
+		_instances.insert(instance->get_owner());
+		_language->unlock();
+		return instance;
+	} else {
+		memdelete(instance);
+		ERR_FAIL_V(NULL);
+	}
+}
+
+bool PluginScript::instance_has(const Object *p_this) const {
+	_language->lock();
+	bool hasit = _instances.has((Object *)p_this);
+	_language->unlock();
+	return hasit;
+}
+
+bool PluginScript::has_source_code() const {
+	bool has = _source != "";
+	return has;
+}
+
+String PluginScript::get_source_code() const {
+	return _source;
+}
+
+void PluginScript::set_source_code(const String &p_code) {
+	if (_source == p_code)
+		return;
+	_source = p_code;
+}
+
+Error PluginScript::reload(bool p_keep_state) {
+	_language->lock();
+	ERR_FAIL_COND_V(!p_keep_state && _instances.size(), ERR_ALREADY_IN_USE);
+	_language->unlock();
+
+	_valid = false;
+	String basedir = _path;
+
+	if (basedir == "")
+		basedir = get_path();
+
+	if (basedir != "")
+		basedir = basedir.get_base_dir();
+
+	if (_data) {
+		_desc->finish(_data);
+	}
+
+	Error err;
+	godot_pluginscript_script_manifest manifest = _desc->init(
+			_language->_data,
+			(godot_string *)&_path,
+			(godot_string *)&_source,
+			(godot_error *)&err);
+	if (err) {
+		// TODO: GDscript uses `ScriptDebugger` here to jump into the parsing error
+		return err;
+	}
+	_valid = true;
+	// Use the manifest to configure this script object
+	_data = manifest.data;
+	_name = *(StringName *)&manifest.name;
+	_tool = manifest.is_tool;
+	// Base name is either another PluginScript or a regular class accessible
+	// through ClassDB
+	StringName *base_name = (StringName *)&manifest.base;
+	for (SelfList<PluginScript> *e = _language->_script_list.first(); e != NULL; e = e->next()) {
+		if (e->self()->_name == *base_name) {
+			// Found you, base is a PluginScript !
+			_ref_base_parent = Ref<PluginScript>(e->self());
+			break;
+		}
+	}
+	if (!_ref_base_parent.is_valid()) {
+		// Base is a native ClassDB
+		if (!ClassDB::class_exists(*base_name)) {
+			ERR_EXPLAIN("Unknown script '" + String(_name) + "' parent '" + String(*base_name) + "'.");
+			ERR_FAIL_V(ERR_PARSE_ERROR);
+		}
+		_native_parent = *base_name;
+	}
+
+	Dictionary *members = (Dictionary *)&manifest.member_lines;
+	for (const Variant *key = members->next(); key != NULL; key = members->next(key)) {
+		_member_lines[*key] = (*members)[key];
+	}
+	Array *methods = (Array *)&manifest.methods;
+	for (int i = 0; i < methods->size(); ++i) {
+		Dictionary v = (*methods)[i];
+		MethodInfo mi = MethodInfo::from_dict(v);
+		_methods_info[mi.name] = mi;
+		// rpc_mode is passed as an optional field and is not part of MethodInfo
+		Variant var = v["rpc_mode"];
+		if (var == Variant()) {
+			_methods_rpc_mode[mi.name] = ScriptInstance::RPC_MODE_DISABLED;
+		} else {
+			_methods_rpc_mode[mi.name] = ScriptInstance::RPCMode(int(var));
+		}
+	}
+	Array *signals = (Array *)&manifest.signals;
+	for (int i = 0; i < signals->size(); ++i) {
+		Variant v = (*signals)[i];
+		MethodInfo mi = MethodInfo::from_dict(v);
+		_signals_info[mi.name] = mi;
+	}
+	Array *properties = (Array *)&manifest.properties;
+	for (int i = 0; i < properties->size(); ++i) {
+		Dictionary v = (*properties)[i];
+		PropertyInfo pi = PropertyInfo::from_dict(v);
+		_properties_info[pi.name] = pi;
+		_properties_default_values[pi.name] = v["default_value"];
+		// rset_mode is passed as an optional field and is not part of PropertyInfo
+		Variant var = v["rset_mode"];
+		if (var == Variant()) {
+			_methods_rpc_mode[pi.name] = ScriptInstance::RPC_MODE_DISABLED;
+		} else {
+			_methods_rpc_mode[pi.name] = ScriptInstance::RPCMode(int(var));
+		}
+	}
+	// Manifest's attributes must be explicitly freed
+	godot_string_name_destroy(&manifest.name);
+	godot_string_name_destroy(&manifest.base);
+	godot_dictionary_destroy(&manifest.member_lines);
+	godot_array_destroy(&manifest.methods);
+	godot_array_destroy(&manifest.signals);
+	godot_array_destroy(&manifest.properties);
+
+#ifdef TOOLS_ENABLED
+/*for (Set<PlaceHolderScriptInstance*>::Element *E=placeholders.front();E;E=E->next()) {
+
+        _update_placeholder(E->get());
+    }*/
+#endif
+	return OK;
+}
+
+void PluginScript::get_script_method_list(List<MethodInfo> *r_methods) const {
+	ASSERT_SCRIPT_VALID();
+	for (Map<StringName, MethodInfo>::Element *e = _methods_info.front(); e != NULL; e = e->next()) {
+		r_methods->push_back(e->get());
+	}
+}
+
+void PluginScript::get_script_property_list(List<PropertyInfo> *r_properties) const {
+	ASSERT_SCRIPT_VALID();
+	for (Map<StringName, PropertyInfo>::Element *e = _properties_info.front(); e != NULL; e = e->next()) {
+		r_properties->push_back(e->get());
+	}
+}
+
+bool PluginScript::has_method(const StringName &p_method) const {
+	ASSERT_SCRIPT_VALID_V(false);
+	return _methods_info.has(p_method);
+}
+
+MethodInfo PluginScript::get_method_info(const StringName &p_method) const {
+	ASSERT_SCRIPT_VALID_V(MethodInfo());
+	const Map<StringName, MethodInfo>::Element *e = _methods_info.find(p_method);
+	if (e != NULL) {
+		return e->get();
+	} else {
+		return MethodInfo();
+	}
+}
+
+bool PluginScript::has_property(const StringName &p_method) const {
+	ASSERT_SCRIPT_VALID_V(false);
+	return _properties_info.has(p_method);
+}
+
+PropertyInfo PluginScript::get_property_info(const StringName &p_property) const {
+	ASSERT_SCRIPT_VALID_V(PropertyInfo());
+	const Map<StringName, PropertyInfo>::Element *e = _properties_info.find(p_property);
+	if (e != NULL) {
+		return e->get();
+	} else {
+		return PropertyInfo();
+	}
+}
+
+bool PluginScript::get_property_default_value(const StringName &p_property, Variant &r_value) const {
+	ASSERT_SCRIPT_VALID_V(false);
+#ifdef TOOLS_ENABLED
+	const Map<StringName, Variant>::Element *e = _properties_default_values.find(p_property);
+	if (e != NULL) {
+		r_value = e->get();
+		return true;
+	} else {
+		return false;
+	}
+#endif
+	return false;
+}
+
+String PluginScript::get_node_type() const {
+	// Even GDscript doesn't know what to put here !
+	return ""; // ?
+}
+
+ScriptLanguage *PluginScript::get_language() const {
+	return _language;
+}
+
+Error PluginScript::load_source_code(const String &p_path) {
+
+	PoolVector<uint8_t> sourcef;
+	Error err;
+	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
+	if (err) {
+		ERR_FAIL_COND_V(err, err);
+	}
+
+	int len = f->get_len();
+	sourcef.resize(len + 1);
+	PoolVector<uint8_t>::Write w = sourcef.write();
+	int r = f->get_buffer(w.ptr(), len);
+	f->close();
+	memdelete(f);
+	ERR_FAIL_COND_V(r != len, ERR_CANT_OPEN);
+	w[len] = 0;
+
+	String s;
+	if (s.parse_utf8((const char *)w.ptr())) {
+		ERR_EXPLAIN("Script '" + p_path + "' contains invalid unicode (utf-8), so it was not loaded. Please ensure that scripts are saved in valid utf-8 unicode.");
+		ERR_FAIL_V(ERR_INVALID_DATA);
+	}
+
+	_source = s;
+#ifdef TOOLS_ENABLED
+// source_changed_cache=true;
+#endif
+	_path = p_path;
+	return OK;
+}
+
+bool PluginScript::has_script_signal(const StringName &p_signal) const {
+	ASSERT_SCRIPT_VALID_V(false);
+	return _signals_info.has(p_signal);
+}
+
+void PluginScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
+	ASSERT_SCRIPT_VALID();
+	for (Map<StringName, MethodInfo>::Element *e = _signals_info.front(); e != NULL; e = e->next()) {
+		r_signals->push_back(e->get());
+	}
+}
+
+int PluginScript::get_member_line(const StringName &p_member) const {
+#ifdef TOOLS_ENABLED
+	if (_member_lines.has(p_member))
+		return _member_lines[p_member];
+	else
+#endif
+		return -1;
+}
+
+ScriptInstance::RPCMode PluginScript::get_rpc_mode(const StringName &p_method) const {
+	ASSERT_SCRIPT_VALID_V(ScriptInstance::RPC_MODE_DISABLED);
+	const Map<StringName, ScriptInstance::RPCMode>::Element *e = _methods_rpc_mode.find(p_method);
+	if (e != NULL) {
+		return e->get();
+	} else {
+		return ScriptInstance::RPC_MODE_DISABLED;
+	}
+}
+
+ScriptInstance::RPCMode PluginScript::get_rset_mode(const StringName &p_variable) const {
+	ASSERT_SCRIPT_VALID_V(ScriptInstance::RPC_MODE_DISABLED);
+	const Map<StringName, ScriptInstance::RPCMode>::Element *e = _variables_rset_mode.find(p_variable);
+	if (e != NULL) {
+		return e->get();
+	} else {
+		return ScriptInstance::RPC_MODE_DISABLED;
+	}
+}
+
+PluginScript::PluginScript()
+	: _data(NULL), _tool(false), _valid(false), _script_list(this) {
+}
+
+void PluginScript::init(PluginScriptLanguage *language) {
+	_desc = &language->_desc.script_desc;
+	_language = language;
+
+#ifdef DEBUG_ENABLED
+	_language->lock();
+	_language->_script_list.add(&_script_list);
+	_language->unlock();
+#endif
+}
+
+PluginScript::~PluginScript() {
+	_desc->finish(_data);
+
+#ifdef DEBUG_ENABLED
+	_language->lock();
+	_language->_script_list.remove(&_script_list);
+	_language->unlock();
+#endif
+}
diff --git a/modules/gdnative/pluginscript/pluginscript_script.h b/modules/gdnative/pluginscript/pluginscript_script.h
new file mode 100644
index 0000000000..051ef46bae
--- /dev/null
+++ b/modules/gdnative/pluginscript/pluginscript_script.h
@@ -0,0 +1,130 @@
+/*************************************************************************/
+/*  pluginscript_script.h                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+
+#ifndef PLUGINSCRIPT_SCRIPT_H
+#define PLUGINSCRIPT_SCRIPT_H
+
+#include <iostream>
+// Godot imports
+#include "core/script_language.h"
+// PluginScript imports
+#include "pluginscript_language.h"
+#include <pluginscript/godot_pluginscript.h>
+
+class PyInstance;
+
+class PluginScript : public Script {
+
+	GDCLASS(PluginScript, Script);
+
+	friend class PluginScriptInstance;
+	friend class PluginScriptLanguage;
+
+private:
+	godot_pluginscript_script_data *_data;
+	const godot_pluginscript_script_desc *_desc;
+	PluginScriptLanguage *_language;
+	bool _tool;
+	bool _valid;
+
+	Ref<PluginScript> _ref_base_parent;
+	StringName _native_parent;
+	SelfList<PluginScript> _script_list;
+
+	Map<StringName, int> _member_lines;
+	Map<StringName, Variant> _properties_default_values;
+	Map<StringName, PropertyInfo> _properties_info;
+	Map<StringName, MethodInfo> _signals_info;
+	Map<StringName, MethodInfo> _methods_info;
+	Map<StringName, ScriptInstance::RPCMode> _variables_rset_mode;
+	Map<StringName, ScriptInstance::RPCMode> _methods_rpc_mode;
+
+	Set<Object *> _instances;
+	//exported members
+	String _source;
+	String _path;
+	StringName _name;
+
+protected:
+	static void _bind_methods();
+
+#ifdef TOOLS_ENABLED
+	Set<PlaceHolderScriptInstance *> placeholders;
+	//void _update_placeholder(PlaceHolderScriptInstance *p_placeholder);
+	virtual void _placeholder_erased(PlaceHolderScriptInstance *p_placeholder);
+#endif
+public:
+	virtual bool can_instance() const;
+
+	virtual Ref<Script> get_base_script() const; //for script inheritance
+
+	virtual StringName get_instance_base_type() const; // this may not work in all scripts, will return empty if so
+	virtual ScriptInstance *instance_create(Object *p_this);
+	virtual bool instance_has(const Object *p_this) const;
+
+	virtual bool has_source_code() const;
+	virtual String get_source_code() const;
+	virtual void set_source_code(const String &p_code);
+	virtual Error reload(bool p_keep_state = false);
+	// TODO: load_source_code only allow utf-8 file, should handle bytecode as well ?
+	virtual Error load_source_code(const String &p_path);
+
+	virtual bool has_method(const StringName &p_method) const;
+	virtual MethodInfo get_method_info(const StringName &p_method) const;
+
+	bool has_property(const StringName &p_method) const;
+	PropertyInfo get_property_info(const StringName &p_property) const;
+
+	bool is_tool() const { return _tool; }
+
+	virtual String get_node_type() const;
+
+	virtual ScriptLanguage *get_language() const;
+
+	virtual bool has_script_signal(const StringName &p_signal) const;
+	virtual void get_script_signal_list(List<MethodInfo> *r_signals) const;
+
+	virtual bool get_property_default_value(const StringName &p_property, Variant &r_value) const;
+
+	virtual void update_exports();
+	virtual void get_script_method_list(List<MethodInfo> *r_methods) const;
+	virtual void get_script_property_list(List<PropertyInfo> *r_propertieslist) const;
+
+	virtual int get_member_line(const StringName &p_member) const;
+
+	ScriptInstance::RPCMode get_rpc_mode(const StringName &p_method) const;
+	ScriptInstance::RPCMode get_rset_mode(const StringName &p_variable) const;
+
+	PluginScript();
+	void init(PluginScriptLanguage *language);
+	virtual ~PluginScript();
+};
+
+#endif // PLUGINSCRIPT_SCRIPT_H
diff --git a/modules/gdnative/pluginscript/register_types.cpp b/modules/gdnative/pluginscript/register_types.cpp
new file mode 100644
index 0000000000..5829d08dff
--- /dev/null
+++ b/modules/gdnative/pluginscript/register_types.cpp
@@ -0,0 +1,118 @@
+/*************************************************************************/
+/*  register_types.cpp                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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 "register_types.h"
+
+#include "core/project_settings.h"
+#include "io/resource_loader.h"
+#include "io/resource_saver.h"
+#include "os/dir_access.h"
+#include "os/os.h"
+#include "scene/main/scene_tree.h"
+
+#include "pluginscript_language.h"
+#include "pluginscript_script.h"
+#include <pluginscript/godot_pluginscript.h>
+
+static List<PluginScriptLanguage *> pluginscript_languages;
+
+static Error _check_language_desc(const godot_pluginscript_language_desc *desc) {
+	ERR_FAIL_COND_V(!desc->name || desc->name == String(), ERR_BUG);
+	ERR_FAIL_COND_V(!desc->type || desc->type == String(), ERR_BUG);
+	ERR_FAIL_COND_V(!desc->extension || desc->extension == String(), ERR_BUG);
+	ERR_FAIL_COND_V(!desc->recognized_extensions || !desc->recognized_extensions[0], ERR_BUG);
+	ERR_FAIL_COND_V(!desc->init, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->finish, ERR_BUG);
+
+	// desc->reserved_words is not mandatory
+	// desc->comment_delimiters is not mandatory
+	// desc->string_delimiters is not mandatory
+
+	// desc->get_template_source_code is not mandatory
+	// desc->validate is not mandatory
+
+	// desc->get_template_source_code is not mandatory
+	// desc->validate is not mandatory
+	// desc->find_function is not mandatory
+	// desc->make_function is not mandatory
+	// desc->complete_code is not mandatory
+	// desc->auto_indent_code is not mandatory
+	// desc->add_global_constant is not mandatory
+	// desc->debug_get_error is not mandatory
+	// desc->debug_get_stack_level_count is not mandatory
+	// desc->debug_get_stack_level_line is not mandatory
+	// desc->debug_get_stack_level_function is not mandatory
+	// desc->debug_get_stack_level_source is not mandatory
+	// desc->debug_get_stack_level_locals is not mandatory
+	// desc->debug_get_stack_level_members is not mandatory
+	// desc->debug_get_globals is not mandatory
+	// desc->debug_parse_stack_level_expression is not mandatory
+	// desc->profiling_start is not mandatory
+	// desc->profiling_stop is not mandatory
+	// desc->profiling_get_accumulated_data is not mandatory
+	// desc->profiling_get_frame_data is not mandatory
+	// desc->frame is not mandatory
+
+	ERR_FAIL_COND_V(!desc->script_desc.init, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.finish, ERR_BUG);
+
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.init, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.finish, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.set_prop, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.get_prop, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.call_method, ERR_BUG);
+	ERR_FAIL_COND_V(!desc->script_desc.instance_desc.notification, ERR_BUG);
+	// desc->script_desc.instance_desc.refcount_incremented is not mandatory
+	// desc->script_desc.instance_desc.refcount_decremented is not mandatory
+	return OK;
+}
+
+void GDAPI godot_pluginscript_register_language(const godot_pluginscript_language_desc *language_desc) {
+	Error ret = _check_language_desc(language_desc);
+	if (ret) {
+		ERR_FAIL();
+	}
+	PluginScriptLanguage *language = memnew(PluginScriptLanguage(language_desc));
+	ScriptServer::register_language(language);
+	ResourceLoader::add_resource_format_loader(language->get_resource_loader());
+	ResourceSaver::add_resource_format_saver(language->get_resource_saver());
+	pluginscript_languages.push_back(language);
+}
+
+void register_pluginscript_types() {
+	ClassDB::register_class<PluginScript>();
+}
+
+void unregister_pluginscript_types() {
+	for (List<PluginScriptLanguage *>::Element *e = pluginscript_languages.front(); e; e = e->next()) {
+		PluginScriptLanguage *language = e->get();
+		ScriptServer::unregister_language(language);
+		memdelete(language);
+	}
+}
diff --git a/modules/gdnative/pluginscript/register_types.h b/modules/gdnative/pluginscript/register_types.h
new file mode 100644
index 0000000000..70bbb16c62
--- /dev/null
+++ b/modules/gdnative/pluginscript/register_types.h
@@ -0,0 +1,31 @@
+/*************************************************************************/
+/*  register_types.h                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2017 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.                */
+/*************************************************************************/
+void register_pluginscript_types();
+void unregister_pluginscript_types();
diff --git a/modules/gdnative/register_types.cpp b/modules/gdnative/register_types.cpp
index 8e5f58524b..d2a3e29849 100644
--- a/modules/gdnative/register_types.cpp
+++ b/modules/gdnative/register_types.cpp
@@ -37,6 +37,7 @@
 
 #include "nativearvr/register_types.h"
 #include "nativescript/register_types.h"
+#include "pluginscript/register_types.h"
 
 #include "core/engine.h"
 #include "core/os/os.h"
@@ -158,6 +159,7 @@ void register_gdnative_types() {
 
 	register_nativearvr_types();
 	register_nativescript_types();
+	register_pluginscript_types();
 
 	// run singletons
 
@@ -207,8 +209,9 @@ void unregister_gdnative_types() {
 	}
 	singleton_gdnatives.clear();
 
-	unregister_nativearvr_types();
+	unregister_pluginscript_types();
 	unregister_nativescript_types();
+	unregister_nativearvr_types();
 
 	memdelete(GDNativeCallRegistry::singleton);