Merge pull request #37271 from akien-mga/cleanup-unused-classes

Remove unused classes and stray headers

1 files changed, 1217 insertions, 0 deletions

diff --git a/editor/doc_data.cpp b/editor/doc_data.cpp
new file mode 100644
index 0000000000..66134b4428
--- /dev/null
+++ b/editor/doc_data.cpp
@@ -0,0 +1,1217 @@
+/*************************************************************************/
+/*  doc_data.cpp                                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2020 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 "doc_data.h"
+
+#include "core/engine.h"
+#include "core/global_constants.h"
+#include "core/io/compression.h"
+#include "core/io/marshalls.h"
+#include "core/os/dir_access.h"
+#include "core/project_settings.h"
+#include "core/script_language.h"
+#include "core/version.h"
+#include "scene/resources/theme.h"
+
+void DocData::merge_from(const DocData &p_data) {
+
+	for (Map<String, ClassDoc>::Element *E = class_list.front(); E; E = E->next()) {
+
+		ClassDoc &c = E->get();
+
+		if (!p_data.class_list.has(c.name))
+			continue;
+
+		const ClassDoc &cf = p_data.class_list[c.name];
+
+		c.description = cf.description;
+		c.brief_description = cf.brief_description;
+		c.tutorials = cf.tutorials;
+
+		for (int i = 0; i < c.methods.size(); i++) {
+
+			MethodDoc &m = c.methods.write[i];
+
+			for (int j = 0; j < cf.methods.size(); j++) {
+
+				if (cf.methods[j].name != m.name)
+					continue;
+				if (cf.methods[j].arguments.size() != m.arguments.size())
+					continue;
+				// since polymorphic functions are allowed we need to check the type of
+				// the arguments so we make sure they are different.
+				int arg_count = cf.methods[j].arguments.size();
+				Vector<bool> arg_used;
+				arg_used.resize(arg_count);
+				for (int l = 0; l < arg_count; ++l)
+					arg_used.write[l] = false;
+				// also there is no guarantee that argument ordering will match, so we
+				// have to check one by one so we make sure we have an exact match
+				for (int k = 0; k < arg_count; ++k) {
+					for (int l = 0; l < arg_count; ++l)
+						if (cf.methods[j].arguments[k].type == m.arguments[l].type && !arg_used[l]) {
+							arg_used.write[l] = true;
+							break;
+						}
+				}
+				bool not_the_same = false;
+				for (int l = 0; l < arg_count; ++l)
+					if (!arg_used[l]) // at least one of the arguments was different
+						not_the_same = true;
+				if (not_the_same)
+					continue;
+
+				const MethodDoc &mf = cf.methods[j];
+
+				m.description = mf.description;
+				break;
+			}
+		}
+
+		for (int i = 0; i < c.signals.size(); i++) {
+
+			MethodDoc &m = c.signals.write[i];
+
+			for (int j = 0; j < cf.signals.size(); j++) {
+
+				if (cf.signals[j].name != m.name)
+					continue;
+				const MethodDoc &mf = cf.signals[j];
+
+				m.description = mf.description;
+				break;
+			}
+		}
+
+		for (int i = 0; i < c.constants.size(); i++) {
+
+			ConstantDoc &m = c.constants.write[i];
+
+			for (int j = 0; j < cf.constants.size(); j++) {
+
+				if (cf.constants[j].name != m.name)
+					continue;
+				const ConstantDoc &mf = cf.constants[j];
+
+				m.description = mf.description;
+				break;
+			}
+		}
+
+		for (int i = 0; i < c.properties.size(); i++) {
+
+			PropertyDoc &p = c.properties.write[i];
+
+			for (int j = 0; j < cf.properties.size(); j++) {
+
+				if (cf.properties[j].name != p.name)
+					continue;
+				const PropertyDoc &pf = cf.properties[j];
+
+				p.description = pf.description;
+				break;
+			}
+		}
+
+		for (int i = 0; i < c.theme_properties.size(); i++) {
+
+			PropertyDoc &p = c.theme_properties.write[i];
+
+			for (int j = 0; j < cf.theme_properties.size(); j++) {
+
+				if (cf.theme_properties[j].name != p.name)
+					continue;
+				const PropertyDoc &pf = cf.theme_properties[j];
+
+				p.description = pf.description;
+				break;
+			}
+		}
+	}
+}
+
+void DocData::remove_from(const DocData &p_data) {
+	for (Map<String, ClassDoc>::Element *E = p_data.class_list.front(); E; E = E->next()) {
+		if (class_list.has(E->key()))
+			class_list.erase(E->key());
+	}
+}
+
+static void return_doc_from_retinfo(DocData::MethodDoc &p_method, const PropertyInfo &p_retinfo) {
+
+	if (p_retinfo.type == Variant::INT && p_retinfo.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+		p_method.return_enum = p_retinfo.class_name;
+		if (p_method.return_enum.begins_with("_")) //proxy class
+			p_method.return_enum = p_method.return_enum.substr(1, p_method.return_enum.length());
+		p_method.return_type = "int";
+	} else if (p_retinfo.class_name != StringName()) {
+		p_method.return_type = p_retinfo.class_name;
+	} else if (p_retinfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+		p_method.return_type = p_retinfo.hint_string;
+	} else if (p_retinfo.type == Variant::NIL && p_retinfo.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
+		p_method.return_type = "Variant";
+	} else if (p_retinfo.type == Variant::NIL) {
+		p_method.return_type = "void";
+	} else {
+		p_method.return_type = Variant::get_type_name(p_retinfo.type);
+	}
+}
+
+static void argument_doc_from_arginfo(DocData::ArgumentDoc &p_argument, const PropertyInfo &p_arginfo) {
+
+	p_argument.name = p_arginfo.name;
+
+	if (p_arginfo.type == Variant::INT && p_arginfo.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+		p_argument.enumeration = p_arginfo.class_name;
+		if (p_argument.enumeration.begins_with("_")) //proxy class
+			p_argument.enumeration = p_argument.enumeration.substr(1, p_argument.enumeration.length());
+		p_argument.type = "int";
+	} else if (p_arginfo.class_name != StringName()) {
+		p_argument.type = p_arginfo.class_name;
+	} else if (p_arginfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+		p_argument.type = p_arginfo.hint_string;
+	} else if (p_arginfo.type == Variant::NIL) {
+		// Parameters cannot be void, so PROPERTY_USAGE_NIL_IS_VARIANT is not necessary
+		p_argument.type = "Variant";
+	} else {
+		p_argument.type = Variant::get_type_name(p_arginfo.type);
+	}
+}
+
+static Variant get_documentation_default_value(const StringName &p_class_name, const StringName &p_property_name, bool &r_default_value_valid) {
+
+	Variant default_value = Variant();
+	r_default_value_valid = false;
+
+	if (ClassDB::can_instance(p_class_name)) {
+		default_value = ClassDB::class_get_default_property_value(p_class_name, p_property_name, &r_default_value_valid);
+	} else {
+		// Cannot get default value of classes that can't be instanced
+		List<StringName> inheriting_classes;
+		ClassDB::get_direct_inheriters_from_class(p_class_name, &inheriting_classes);
+		for (List<StringName>::Element *E2 = inheriting_classes.front(); E2; E2 = E2->next()) {
+			if (ClassDB::can_instance(E2->get())) {
+				default_value = ClassDB::class_get_default_property_value(E2->get(), p_property_name, &r_default_value_valid);
+				if (r_default_value_valid)
+					break;
+			}
+		}
+	}
+
+	return default_value;
+}
+
+void DocData::generate(bool p_basic_types) {
+
+	List<StringName> classes;
+	ClassDB::get_class_list(&classes);
+	classes.sort_custom<StringName::AlphCompare>();
+	// Move ProjectSettings, so that other classes can register properties there.
+	classes.move_to_back(classes.find("ProjectSettings"));
+
+	bool skip_setter_getter_methods = true;
+
+	while (classes.size()) {
+
+		Set<StringName> setters_getters;
+
+		String name = classes.front()->get();
+		String cname = name;
+		if (cname.begins_with("_")) //proxy class
+			cname = cname.substr(1, name.length());
+
+		class_list[cname] = ClassDoc();
+		ClassDoc &c = class_list[cname];
+		c.name = cname;
+		c.inherits = ClassDB::get_parent_class(name);
+
+		List<PropertyInfo> properties;
+		List<PropertyInfo> own_properties;
+		if (name == "ProjectSettings") {
+			//special case for project settings, so settings can be documented
+			ProjectSettings::get_singleton()->get_property_list(&properties);
+			own_properties = properties;
+		} else {
+			ClassDB::get_property_list(name, &properties);
+			ClassDB::get_property_list(name, &own_properties, true);
+		}
+
+		List<PropertyInfo>::Element *EO = own_properties.front();
+		for (List<PropertyInfo>::Element *E = properties.front(); E; E = E->next()) {
+			bool inherited = EO == NULL;
+			if (EO && EO->get() == E->get()) {
+				inherited = false;
+				EO = EO->next();
+			}
+
+			if (E->get().usage & PROPERTY_USAGE_GROUP || E->get().usage & PROPERTY_USAGE_CATEGORY || E->get().usage & PROPERTY_USAGE_INTERNAL)
+				continue;
+
+			PropertyDoc prop;
+
+			prop.name = E->get().name;
+
+			prop.overridden = inherited;
+
+			bool default_value_valid = false;
+			Variant default_value;
+
+			if (name == "ProjectSettings") {
+				// Special case for project settings, so that settings are not taken from the current project's settings
+				if (E->get().name == "script" ||
+						ProjectSettings::get_singleton()->get_order(E->get().name) >= ProjectSettings::NO_BUILTIN_ORDER_BASE) {
+					continue;
+				}
+				if (E->get().usage & PROPERTY_USAGE_EDITOR) {
+					default_value = ProjectSettings::get_singleton()->property_get_revert(E->get().name);
+					default_value_valid = true;
+				}
+			} else {
+				default_value = get_documentation_default_value(name, E->get().name, default_value_valid);
+
+				if (inherited) {
+					bool base_default_value_valid = false;
+					Variant base_default_value = get_documentation_default_value(ClassDB::get_parent_class(name), E->get().name, base_default_value_valid);
+					if (!default_value_valid || !base_default_value_valid || default_value == base_default_value)
+						continue;
+				}
+			}
+
+			//used to track uninitialized values using valgrind
+			//print_line("getting default value for " + String(name) + "." + String(E->get().name));
+			if (default_value_valid && default_value.get_type() != Variant::OBJECT) {
+				prop.default_value = default_value.get_construct_string().replace("\n", "");
+			}
+
+			StringName setter = ClassDB::get_property_setter(name, E->get().name);
+			StringName getter = ClassDB::get_property_getter(name, E->get().name);
+
+			prop.setter = setter;
+			prop.getter = getter;
+
+			bool found_type = false;
+			if (getter != StringName()) {
+				MethodBind *mb = ClassDB::get_method(name, getter);
+				if (mb) {
+					PropertyInfo retinfo = mb->get_return_info();
+
+					found_type = true;
+					if (retinfo.type == Variant::INT && retinfo.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
+						prop.enumeration = retinfo.class_name;
+						prop.type = "int";
+					} else if (retinfo.class_name != StringName()) {
+						prop.type = retinfo.class_name;
+					} else if (retinfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
+
+						prop.type = retinfo.hint_string;
+					} else if (retinfo.type == Variant::NIL && retinfo.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
+
+						prop.type = "Variant";
+					} else if (retinfo.type == Variant::NIL) {
+						prop.type = "void";
+					} else {
+						prop.type = Variant::get_type_name(retinfo.type);
+					}
+				}
+
+				setters_getters.insert(getter);
+			}
+
+			if (setter != StringName()) {
+
+				setters_getters.insert(setter);
+			}
+
+			if (!found_type) {
+
+				if (E->get().type == Variant::OBJECT && E->get().hint == PROPERTY_HINT_RESOURCE_TYPE)
+					prop.type = E->get().hint_string;
+				else
+					prop.type = Variant::get_type_name(E->get().type);
+			}
+
+			c.properties.push_back(prop);
+		}
+
+		List<MethodInfo> method_list;
+		ClassDB::get_method_list(name, &method_list, true);
+		method_list.sort();
+
+		for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
+
+			if (E->get().name == "" || (E->get().name[0] == '_' && !(E->get().flags & METHOD_FLAG_VIRTUAL)))
+				continue; //hidden, don't count
+
+			if (skip_setter_getter_methods && setters_getters.has(E->get().name)) {
+				// Don't skip parametric setters and getters, i.e. method which require
+				// one or more parameters to define what property should be set or retrieved.
+				// E.g. CPUParticles::set_param(Parameter param, float value).
+				if (E->get().arguments.size() == 0 /* getter */ || (E->get().arguments.size() == 1 && E->get().return_val.type == Variant::NIL /* setter */)) {
+					continue;
+				}
+			}
+
+			MethodDoc method;
+
+			method.name = E->get().name;
+
+			if (E->get().flags & METHOD_FLAG_VIRTUAL)
+				method.qualifiers = "virtual";
+
+			if (E->get().flags & METHOD_FLAG_CONST) {
+				if (method.qualifiers != "")
+					method.qualifiers += " ";
+				method.qualifiers += "const";
+			} else if (E->get().flags & METHOD_FLAG_VARARG) {
+				if (method.qualifiers != "")
+					method.qualifiers += " ";
+				method.qualifiers += "vararg";
+			}
+
+			for (int i = -1; i < E->get().arguments.size(); i++) {
+
+				if (i == -1) {
+#ifdef DEBUG_METHODS_ENABLED
+					return_doc_from_retinfo(method, E->get().return_val);
+#endif
+				} else {
+
+					const PropertyInfo &arginfo = E->get().arguments[i];
+					ArgumentDoc argument;
+					argument_doc_from_arginfo(argument, arginfo);
+
+					int darg_idx = i - (E->get().arguments.size() - E->get().default_arguments.size());
+					if (darg_idx >= 0) {
+						Variant default_arg = E->get().default_arguments[darg_idx];
+						argument.default_value = default_arg.get_construct_string();
+					}
+
+					method.arguments.push_back(argument);
+				}
+			}
+
+			c.methods.push_back(method);
+		}
+
+		List<MethodInfo> signal_list;
+		ClassDB::get_signal_list(name, &signal_list, true);
+
+		if (signal_list.size()) {
+
+			for (List<MethodInfo>::Element *EV = signal_list.front(); EV; EV = EV->next()) {
+
+				MethodDoc signal;
+				signal.name = EV->get().name;
+				for (int i = 0; i < EV->get().arguments.size(); i++) {
+
+					const PropertyInfo &arginfo = EV->get().arguments[i];
+					ArgumentDoc argument;
+					argument_doc_from_arginfo(argument, arginfo);
+
+					signal.arguments.push_back(argument);
+				}
+
+				c.signals.push_back(signal);
+			}
+		}
+
+		List<String> constant_list;
+		ClassDB::get_integer_constant_list(name, &constant_list, true);
+
+		for (List<String>::Element *E = constant_list.front(); E; E = E->next()) {
+
+			ConstantDoc constant;
+			constant.name = E->get();
+			constant.value = itos(ClassDB::get_integer_constant(name, E->get()));
+			constant.enumeration = ClassDB::get_integer_constant_enum(name, E->get());
+			c.constants.push_back(constant);
+		}
+
+		//theme stuff
+
+		{
+			List<StringName> l;
+			Theme::get_default()->get_constant_list(cname, &l);
+			for (List<StringName>::Element *E = l.front(); E; E = E->next()) {
+
+				PropertyDoc pd;
+				pd.name = E->get();
+				pd.type = "int";
+				pd.default_value = itos(Theme::get_default()->get_constant(E->get(), cname));
+				c.theme_properties.push_back(pd);
+			}
+
+			l.clear();
+			Theme::get_default()->get_color_list(cname, &l);
+			for (List<StringName>::Element *E = l.front(); E; E = E->next()) {
+
+				PropertyDoc pd;
+				pd.name = E->get();
+				pd.type = "Color";
+				pd.default_value = Variant(Theme::get_default()->get_color(E->get(), cname)).get_construct_string();
+				c.theme_properties.push_back(pd);
+			}
+
+			l.clear();
+			Theme::get_default()->get_icon_list(cname, &l);
+			for (List<StringName>::Element *E = l.front(); E; E = E->next()) {
+
+				PropertyDoc pd;
+				pd.name = E->get();
+				pd.type = "Texture2D";
+				c.theme_properties.push_back(pd);
+			}
+			l.clear();
+			Theme::get_default()->get_font_list(cname, &l);
+			for (List<StringName>::Element *E = l.front(); E; E = E->next()) {
+
+				PropertyDoc pd;
+				pd.name = E->get();
+				pd.type = "Font";
+				c.theme_properties.push_back(pd);
+			}
+			l.clear();
+			Theme::get_default()->get_stylebox_list(cname, &l);
+			for (List<StringName>::Element *E = l.front(); E; E = E->next()) {
+
+				PropertyDoc pd;
+				pd.name = E->get();
+				pd.type = "StyleBox";
+				c.theme_properties.push_back(pd);
+			}
+		}
+
+		classes.pop_front();
+	}
+
+	{
+		// So we can document the concept of Variant even if it's not a usable class per se.
+		class_list["Variant"] = ClassDoc();
+		class_list["Variant"].name = "Variant";
+	}
+
+	if (!p_basic_types)
+		return;
+
+	// Add Variant types.
+	for (int i = 0; i < Variant::VARIANT_MAX; i++) {
+		if (i == Variant::NIL)
+			continue; // Not exposed outside of 'null', should not be in class list.
+		if (i == Variant::OBJECT)
+			continue; // Use the core type instead.
+
+		String cname = Variant::get_type_name(Variant::Type(i));
+
+		class_list[cname] = ClassDoc();
+		ClassDoc &c = class_list[cname];
+		c.name = cname;
+
+		Callable::CallError cerror;
+		Variant v = Variant::construct(Variant::Type(i), NULL, 0, cerror);
+
+		List<MethodInfo> method_list;
+		v.get_method_list(&method_list);
+		method_list.sort();
+		Variant::get_constructor_list(Variant::Type(i), &method_list);
+
+		for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
+
+			MethodInfo &mi = E->get();
+			MethodDoc method;
+
+			method.name = mi.name;
+
+			for (int j = 0; j < mi.arguments.size(); j++) {
+
+				PropertyInfo arginfo = mi.arguments[j];
+				ArgumentDoc ad;
+				argument_doc_from_arginfo(ad, mi.arguments[j]);
+				ad.name = arginfo.name;
+
+				int darg_idx = mi.default_arguments.size() - mi.arguments.size() + j;
+				if (darg_idx >= 0) {
+					Variant default_arg = mi.default_arguments[darg_idx];
+					ad.default_value = default_arg.get_construct_string();
+				}
+
+				method.arguments.push_back(ad);
+			}
+
+			return_doc_from_retinfo(method, mi.return_val);
+
+			if (mi.flags & METHOD_FLAG_VARARG) {
+				if (method.qualifiers != "")
+					method.qualifiers += " ";
+				method.qualifiers += "vararg";
+			}
+
+			c.methods.push_back(method);
+		}
+
+		List<PropertyInfo> properties;
+		v.get_property_list(&properties);
+		for (List<PropertyInfo>::Element *E = properties.front(); E; E = E->next()) {
+
+			PropertyInfo pi = E->get();
+			PropertyDoc property;
+			property.name = pi.name;
+			property.type = Variant::get_type_name(pi.type);
+			property.default_value = v.get(pi.name).get_construct_string();
+
+			c.properties.push_back(property);
+		}
+
+		List<StringName> constants;
+		Variant::get_constants_for_type(Variant::Type(i), &constants);
+
+		for (List<StringName>::Element *E = constants.front(); E; E = E->next()) {
+
+			ConstantDoc constant;
+			constant.name = E->get();
+			Variant value = Variant::get_constant_value(Variant::Type(i), E->get());
+			constant.value = value.get_type() == Variant::INT ? itos(value) : value.get_construct_string();
+			c.constants.push_back(constant);
+		}
+	}
+
+	//built in constants and functions
+
+	{
+
+		String cname = "@GlobalScope";
+		class_list[cname] = ClassDoc();
+		ClassDoc &c = class_list[cname];
+		c.name = cname;
+
+		for (int i = 0; i < GlobalConstants::get_global_constant_count(); i++) {
+
+			ConstantDoc cd;
+			cd.name = GlobalConstants::get_global_constant_name(i);
+			cd.value = itos(GlobalConstants::get_global_constant_value(i));
+			cd.enumeration = GlobalConstants::get_global_constant_enum(i);
+			c.constants.push_back(cd);
+		}
+
+		List<Engine::Singleton> singletons;
+		Engine::get_singleton()->get_singletons(&singletons);
+
+		//servers (this is kind of hackish)
+		for (List<Engine::Singleton>::Element *E = singletons.front(); E; E = E->next()) {
+
+			PropertyDoc pd;
+			Engine::Singleton &s = E->get();
+			if (!s.ptr) {
+				continue;
+			}
+			pd.name = s.name;
+			pd.type = s.ptr->get_class();
+			while (String(ClassDB::get_parent_class(pd.type)) != "Object")
+				pd.type = ClassDB::get_parent_class(pd.type);
+			if (pd.type.begins_with("_"))
+				pd.type = pd.type.substr(1, pd.type.length());
+			c.properties.push_back(pd);
+		}
+	}
+
+	//built in script reference
+
+	{
+
+		for (int i = 0; i < ScriptServer::get_language_count(); i++) {
+
+			ScriptLanguage *lang = ScriptServer::get_language(i);
+			String cname = "@" + lang->get_name();
+			class_list[cname] = ClassDoc();
+			ClassDoc &c = class_list[cname];
+			c.name = cname;
+
+			List<MethodInfo> minfo;
+
+			lang->get_public_functions(&minfo);
+
+			for (List<MethodInfo>::Element *E = minfo.front(); E; E = E->next()) {
+
+				MethodInfo &mi = E->get();
+				MethodDoc md;
+				md.name = mi.name;
+
+				if (mi.flags & METHOD_FLAG_VARARG) {
+					if (md.qualifiers != "")
+						md.qualifiers += " ";
+					md.qualifiers += "vararg";
+				}
+
+				return_doc_from_retinfo(md, mi.return_val);
+
+				for (int j = 0; j < mi.arguments.size(); j++) {
+
+					ArgumentDoc ad;
+					argument_doc_from_arginfo(ad, mi.arguments[j]);
+
+					int darg_idx = j - (mi.arguments.size() - mi.default_arguments.size());
+					if (darg_idx >= 0) {
+						Variant default_arg = E->get().default_arguments[darg_idx];
+						ad.default_value = default_arg.get_construct_string();
+					}
+
+					md.arguments.push_back(ad);
+				}
+
+				c.methods.push_back(md);
+			}
+
+			List<Pair<String, Variant>> cinfo;
+			lang->get_public_constants(&cinfo);
+
+			for (List<Pair<String, Variant>>::Element *E = cinfo.front(); E; E = E->next()) {
+
+				ConstantDoc cd;
+				cd.name = E->get().first;
+				cd.value = E->get().second;
+				c.constants.push_back(cd);
+			}
+		}
+	}
+}
+
+static Error _parse_methods(Ref<XMLParser> &parser, Vector<DocData::MethodDoc> &methods) {
+
+	String section = parser->get_node_name();
+	String element = section.substr(0, section.length() - 1);
+
+	while (parser->read() == OK) {
+
+		if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+			if (parser->get_node_name() == element) {
+
+				DocData::MethodDoc method;
+				ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+				method.name = parser->get_attribute_value("name");
+				if (parser->has_attribute("qualifiers"))
+					method.qualifiers = parser->get_attribute_value("qualifiers");
+
+				while (parser->read() == OK) {
+
+					if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+						String name = parser->get_node_name();
+						if (name == "return") {
+
+							ERR_FAIL_COND_V(!parser->has_attribute("type"), ERR_FILE_CORRUPT);
+							method.return_type = parser->get_attribute_value("type");
+							if (parser->has_attribute("enum")) {
+								method.return_enum = parser->get_attribute_value("enum");
+							}
+						} else if (name == "argument") {
+
+							DocData::ArgumentDoc argument;
+							ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+							argument.name = parser->get_attribute_value("name");
+							ERR_FAIL_COND_V(!parser->has_attribute("type"), ERR_FILE_CORRUPT);
+							argument.type = parser->get_attribute_value("type");
+							if (parser->has_attribute("enum")) {
+								argument.enumeration = parser->get_attribute_value("enum");
+							}
+
+							method.arguments.push_back(argument);
+
+						} else if (name == "description") {
+
+							parser->read();
+							if (parser->get_node_type() == XMLParser::NODE_TEXT)
+								method.description = parser->get_node_data();
+						}
+
+					} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == element)
+						break;
+				}
+
+				methods.push_back(method);
+
+			} else {
+				ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + parser->get_node_name() + ".");
+			}
+
+		} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == section)
+			break;
+	}
+
+	return OK;
+}
+
+Error DocData::load_classes(const String &p_dir) {
+
+	Error err;
+	DirAccessRef da = DirAccess::open(p_dir, &err);
+	if (!da) {
+		return err;
+	}
+
+	da->list_dir_begin();
+	String path;
+	path = da->get_next();
+	while (path != String()) {
+		if (!da->current_is_dir() && path.ends_with("xml")) {
+			Ref<XMLParser> parser = memnew(XMLParser);
+			Error err2 = parser->open(p_dir.plus_file(path));
+			if (err2)
+				return err2;
+
+			_load(parser);
+		}
+		path = da->get_next();
+	}
+
+	da->list_dir_end();
+
+	return OK;
+}
+Error DocData::erase_classes(const String &p_dir) {
+
+	Error err;
+	DirAccessRef da = DirAccess::open(p_dir, &err);
+	if (!da) {
+		return err;
+	}
+
+	List<String> to_erase;
+
+	da->list_dir_begin();
+	String path;
+	path = da->get_next();
+	while (path != String()) {
+		if (!da->current_is_dir() && path.ends_with("xml")) {
+			to_erase.push_back(path);
+		}
+		path = da->get_next();
+	}
+	da->list_dir_end();
+
+	while (to_erase.size()) {
+		da->remove(to_erase.front()->get());
+		to_erase.pop_front();
+	}
+
+	return OK;
+}
+Error DocData::_load(Ref<XMLParser> parser) {
+
+	Error err = OK;
+
+	while ((err = parser->read()) == OK) {
+
+		if (parser->get_node_type() == XMLParser::NODE_ELEMENT && parser->get_node_name() == "?xml") {
+			parser->skip_section();
+		}
+
+		if (parser->get_node_type() != XMLParser::NODE_ELEMENT)
+			continue; //no idea what this may be, but skipping anyway
+
+		ERR_FAIL_COND_V(parser->get_node_name() != "class", ERR_FILE_CORRUPT);
+
+		ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+		String name = parser->get_attribute_value("name");
+		class_list[name] = ClassDoc();
+		ClassDoc &c = class_list[name];
+
+		c.name = name;
+		if (parser->has_attribute("inherits"))
+			c.inherits = parser->get_attribute_value("inherits");
+
+		while (parser->read() == OK) {
+
+			if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+				String name2 = parser->get_node_name();
+
+				if (name2 == "brief_description") {
+
+					parser->read();
+					if (parser->get_node_type() == XMLParser::NODE_TEXT)
+						c.brief_description = parser->get_node_data();
+
+				} else if (name2 == "description") {
+					parser->read();
+					if (parser->get_node_type() == XMLParser::NODE_TEXT)
+						c.description = parser->get_node_data();
+				} else if (name2 == "tutorials") {
+					while (parser->read() == OK) {
+
+						if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+							String name3 = parser->get_node_name();
+
+							if (name3 == "link") {
+
+								parser->read();
+								if (parser->get_node_type() == XMLParser::NODE_TEXT)
+									c.tutorials.push_back(parser->get_node_data().strip_edges());
+							} else {
+								ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + name3 + ".");
+							}
+						} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == "tutorials")
+							break; // End of <tutorials>.
+					}
+				} else if (name2 == "methods") {
+
+					Error err2 = _parse_methods(parser, c.methods);
+					ERR_FAIL_COND_V(err2, err2);
+
+				} else if (name2 == "signals") {
+
+					Error err2 = _parse_methods(parser, c.signals);
+					ERR_FAIL_COND_V(err2, err2);
+				} else if (name2 == "members") {
+
+					while (parser->read() == OK) {
+
+						if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+							String name3 = parser->get_node_name();
+
+							if (name3 == "member") {
+
+								PropertyDoc prop2;
+
+								ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+								prop2.name = parser->get_attribute_value("name");
+								ERR_FAIL_COND_V(!parser->has_attribute("type"), ERR_FILE_CORRUPT);
+								prop2.type = parser->get_attribute_value("type");
+								if (parser->has_attribute("setter"))
+									prop2.setter = parser->get_attribute_value("setter");
+								if (parser->has_attribute("getter"))
+									prop2.getter = parser->get_attribute_value("getter");
+								if (parser->has_attribute("enum"))
+									prop2.enumeration = parser->get_attribute_value("enum");
+								if (!parser->is_empty()) {
+									parser->read();
+									if (parser->get_node_type() == XMLParser::NODE_TEXT)
+										prop2.description = parser->get_node_data();
+								}
+								c.properties.push_back(prop2);
+							} else {
+								ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + name3 + ".");
+							}
+
+						} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == "members")
+							break; // End of <members>.
+					}
+
+				} else if (name2 == "theme_items") {
+
+					while (parser->read() == OK) {
+
+						if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+							String name3 = parser->get_node_name();
+
+							if (name3 == "theme_item") {
+
+								PropertyDoc prop2;
+
+								ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+								prop2.name = parser->get_attribute_value("name");
+								ERR_FAIL_COND_V(!parser->has_attribute("type"), ERR_FILE_CORRUPT);
+								prop2.type = parser->get_attribute_value("type");
+								if (!parser->is_empty()) {
+									parser->read();
+									if (parser->get_node_type() == XMLParser::NODE_TEXT)
+										prop2.description = parser->get_node_data();
+								}
+								c.theme_properties.push_back(prop2);
+							} else {
+								ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + name3 + ".");
+							}
+
+						} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == "theme_items")
+							break; // End of <theme_items>.
+					}
+
+				} else if (name2 == "constants") {
+
+					while (parser->read() == OK) {
+
+						if (parser->get_node_type() == XMLParser::NODE_ELEMENT) {
+
+							String name3 = parser->get_node_name();
+
+							if (name3 == "constant") {
+
+								ConstantDoc constant2;
+								ERR_FAIL_COND_V(!parser->has_attribute("name"), ERR_FILE_CORRUPT);
+								constant2.name = parser->get_attribute_value("name");
+								ERR_FAIL_COND_V(!parser->has_attribute("value"), ERR_FILE_CORRUPT);
+								constant2.value = parser->get_attribute_value("value");
+								if (parser->has_attribute("enum")) {
+									constant2.enumeration = parser->get_attribute_value("enum");
+								}
+								if (!parser->is_empty()) {
+									parser->read();
+									if (parser->get_node_type() == XMLParser::NODE_TEXT)
+										constant2.description = parser->get_node_data();
+								}
+								c.constants.push_back(constant2);
+							} else {
+								ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + name3 + ".");
+							}
+
+						} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == "constants")
+							break; // End of <constants>.
+					}
+
+				} else {
+
+					ERR_FAIL_V_MSG(ERR_FILE_CORRUPT, "Invalid tag in doc file: " + name2 + ".");
+				}
+
+			} else if (parser->get_node_type() == XMLParser::NODE_ELEMENT_END && parser->get_node_name() == "class")
+				break; // End of <class>.
+		}
+	}
+
+	return OK;
+}
+
+static void _write_string(FileAccess *f, int p_tablevel, const String &p_string) {
+
+	if (p_string == "")
+		return;
+	String tab;
+	for (int i = 0; i < p_tablevel; i++)
+		tab += "\t";
+	f->store_string(tab + p_string + "\n");
+}
+
+Error DocData::save_classes(const String &p_default_path, const Map<String, String> &p_class_path) {
+
+	for (Map<String, ClassDoc>::Element *E = class_list.front(); E; E = E->next()) {
+
+		ClassDoc &c = E->get();
+
+		String save_path;
+		if (p_class_path.has(c.name)) {
+			save_path = p_class_path[c.name];
+		} else {
+			save_path = p_default_path;
+		}
+
+		Error err;
+		String save_file = save_path.plus_file(c.name + ".xml");
+		FileAccessRef f = FileAccess::open(save_file, FileAccess::WRITE, &err);
+
+		ERR_CONTINUE_MSG(err != OK, "Can't write doc file: " + save_file + ".");
+
+		_write_string(f, 0, "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
+
+		String header = "<class name=\"" + c.name + "\"";
+		if (c.inherits != "")
+			header += " inherits=\"" + c.inherits + "\"";
+		header += String(" version=\"") + VERSION_BRANCH + "\"";
+		header += ">";
+		_write_string(f, 0, header);
+
+		_write_string(f, 1, "<brief_description>");
+		_write_string(f, 2, c.brief_description.strip_edges().xml_escape());
+		_write_string(f, 1, "</brief_description>");
+
+		_write_string(f, 1, "<description>");
+		_write_string(f, 2, c.description.strip_edges().xml_escape());
+		_write_string(f, 1, "</description>");
+
+		_write_string(f, 1, "<tutorials>");
+		for (int i = 0; i < c.tutorials.size(); i++) {
+			_write_string(f, 2, "<link>" + c.tutorials.get(i).xml_escape() + "</link>");
+		}
+		_write_string(f, 1, "</tutorials>");
+
+		_write_string(f, 1, "<methods>");
+
+		c.methods.sort();
+
+		for (int i = 0; i < c.methods.size(); i++) {
+
+			const MethodDoc &m = c.methods[i];
+
+			String qualifiers;
+			if (m.qualifiers != "")
+				qualifiers += " qualifiers=\"" + m.qualifiers.xml_escape() + "\"";
+
+			_write_string(f, 2, "<method name=\"" + m.name + "\"" + qualifiers + ">");
+
+			if (m.return_type != "") {
+
+				String enum_text;
+				if (m.return_enum != String()) {
+					enum_text = " enum=\"" + m.return_enum + "\"";
+				}
+				_write_string(f, 3, "<return type=\"" + m.return_type + "\"" + enum_text + ">");
+				_write_string(f, 3, "</return>");
+			}
+
+			for (int j = 0; j < m.arguments.size(); j++) {
+
+				const ArgumentDoc &a = m.arguments[j];
+
+				String enum_text;
+				if (a.enumeration != String()) {
+					enum_text = " enum=\"" + a.enumeration + "\"";
+				}
+
+				if (a.default_value != "")
+					_write_string(f, 3, "<argument index=\"" + itos(j) + "\" name=\"" + a.name.xml_escape() + "\" type=\"" + a.type.xml_escape() + "\"" + enum_text + " default=\"" + a.default_value.xml_escape(true) + "\">");
+				else
+					_write_string(f, 3, "<argument index=\"" + itos(j) + "\" name=\"" + a.name.xml_escape() + "\" type=\"" + a.type.xml_escape() + "\"" + enum_text + ">");
+
+				_write_string(f, 3, "</argument>");
+			}
+
+			_write_string(f, 3, "<description>");
+			_write_string(f, 4, m.description.strip_edges().xml_escape());
+			_write_string(f, 3, "</description>");
+
+			_write_string(f, 2, "</method>");
+		}
+
+		_write_string(f, 1, "</methods>");
+
+		if (c.properties.size()) {
+			_write_string(f, 1, "<members>");
+
+			c.properties.sort();
+
+			for (int i = 0; i < c.properties.size(); i++) {
+
+				String additional_attributes;
+				if (c.properties[i].enumeration != String()) {
+					additional_attributes += " enum=\"" + c.properties[i].enumeration + "\"";
+				}
+				if (c.properties[i].default_value != String()) {
+					additional_attributes += " default=\"" + c.properties[i].default_value.xml_escape(true) + "\"";
+				}
+
+				const PropertyDoc &p = c.properties[i];
+
+				if (c.properties[i].overridden) {
+					_write_string(f, 2, "<member name=\"" + p.name + "\" type=\"" + p.type + "\" setter=\"" + p.setter + "\" getter=\"" + p.getter + "\" override=\"true\"" + additional_attributes + " />");
+				} else {
+					_write_string(f, 2, "<member name=\"" + p.name + "\" type=\"" + p.type + "\" setter=\"" + p.setter + "\" getter=\"" + p.getter + "\"" + additional_attributes + ">");
+					_write_string(f, 3, p.description.strip_edges().xml_escape());
+					_write_string(f, 2, "</member>");
+				}
+			}
+			_write_string(f, 1, "</members>");
+		}
+
+		if (c.signals.size()) {
+
+			c.signals.sort();
+
+			_write_string(f, 1, "<signals>");
+			for (int i = 0; i < c.signals.size(); i++) {
+
+				const MethodDoc &m = c.signals[i];
+				_write_string(f, 2, "<signal name=\"" + m.name + "\">");
+				for (int j = 0; j < m.arguments.size(); j++) {
+
+					const ArgumentDoc &a = m.arguments[j];
+					_write_string(f, 3, "<argument index=\"" + itos(j) + "\" name=\"" + a.name.xml_escape() + "\" type=\"" + a.type.xml_escape() + "\">");
+					_write_string(f, 3, "</argument>");
+				}
+
+				_write_string(f, 3, "<description>");
+				_write_string(f, 4, m.description.strip_edges().xml_escape());
+				_write_string(f, 3, "</description>");
+
+				_write_string(f, 2, "</signal>");
+			}
+
+			_write_string(f, 1, "</signals>");
+		}
+
+		_write_string(f, 1, "<constants>");
+
+		for (int i = 0; i < c.constants.size(); i++) {
+
+			const ConstantDoc &k = c.constants[i];
+			if (k.enumeration != String()) {
+				_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\" enum=\"" + k.enumeration + "\">");
+			} else {
+				_write_string(f, 2, "<constant name=\"" + k.name + "\" value=\"" + k.value + "\">");
+			}
+			_write_string(f, 3, k.description.strip_edges().xml_escape());
+			_write_string(f, 2, "</constant>");
+		}
+
+		_write_string(f, 1, "</constants>");
+
+		if (c.theme_properties.size()) {
+
+			c.theme_properties.sort();
+
+			_write_string(f, 1, "<theme_items>");
+			for (int i = 0; i < c.theme_properties.size(); i++) {
+
+				const PropertyDoc &p = c.theme_properties[i];
+
+				if (p.default_value != "")
+					_write_string(f, 2, "<theme_item name=\"" + p.name + "\" type=\"" + p.type + "\" default=\"" + p.default_value.xml_escape(true) + "\">");
+				else
+					_write_string(f, 2, "<theme_item name=\"" + p.name + "\" type=\"" + p.type + "\">");
+
+				_write_string(f, 3, p.description.strip_edges().xml_escape());
+
+				_write_string(f, 2, "</theme_item>");
+			}
+			_write_string(f, 1, "</theme_items>");
+		}
+
+		_write_string(f, 0, "</class>");
+	}
+
+	return OK;
+}
+
+Error DocData::load_compressed(const uint8_t *p_data, int p_compressed_size, int p_uncompressed_size) {
+
+	Vector<uint8_t> data;
+	data.resize(p_uncompressed_size);
+	Compression::decompress(data.ptrw(), p_uncompressed_size, p_data, p_compressed_size, Compression::MODE_DEFLATE);
+	class_list.clear();
+
+	Ref<XMLParser> parser = memnew(XMLParser);
+	Error err = parser->open_buffer(data);
+	if (err)
+		return err;
+
+	_load(parser);
+
+	return OK;
+}