virtualx-engine/modules/gdnative/nativescript/api_generator.cpp
George Marques ad7141703e
GDNative: Use VariantWriter for the API JSON generator
Instead of the String representation, which can be finicky to work with.
VariantWriter is more robust since changes to it affects the whole
system thus it's changed less often and it's never ambiguous.
2021-06-14 10:30:58 -03:00

952 lines
33 KiB
C++

/*************************************************************************/
/* api_generator.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "api_generator.h"
#ifdef TOOLS_ENABLED
#include "core/config/engine.h"
#include "core/core_constants.h"
#include "core/io/file_access.h"
#include "core/object/class_db.h"
#include "core/string/string_builder.h"
#include "core/templates/pair.h"
#include "core/variant/variant_parser.h"
// helper stuff
static Error save_file(const String &p_path, const List<String> &p_content) {
FileAccessRef file = FileAccess::open(p_path, FileAccess::WRITE);
ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
for (const List<String>::Element *e = p_content.front(); e != nullptr; e = e->next()) {
file->store_string(e->get());
}
file->close();
return OK;
}
// helper stuff end
struct MethodAPI {
String method_name;
String return_type;
List<String> argument_types;
List<String> argument_names;
Map<int, Variant> default_arguments;
int argument_count = 0;
bool has_varargs = false;
bool is_editor = false;
bool is_noscript = false;
bool is_const = false;
bool is_static = false; // For builtin types.
bool is_reverse = false;
bool is_virtual = false;
bool is_from_script = false;
};
struct PropertyAPI {
String name;
String getter;
String setter;
String type;
int index = 0;
};
struct ConstantAPI {
String constant_name;
int constant_value = 0;
Variant builtin_constant_value; // For builtin types;
String builtin_constant_type; // For builtin types;
};
struct SignalAPI {
String name;
List<String> argument_types;
List<String> argument_names;
Map<int, Variant> default_arguments;
};
struct EnumAPI {
String name;
List<Pair<int, String>> values;
};
struct OperatorAPI { // For builtin types;
String name;
int oper = Variant::OP_MAX;
String other_type;
String return_type;
};
struct ClassAPI {
String class_name;
String super_class_name;
ClassDB::APIType api_type = ClassDB::API_NONE;
bool is_singleton = false;
String singleton_name;
bool is_instantiable = false;
// @Unclear
bool is_ref_counted = false;
bool has_indexing = false; // For builtin types.
String indexed_type; // For builtin types.
bool is_keyed = false; // For builtin types.
List<MethodAPI> methods;
List<MethodAPI> constructors; // For builtin types.
List<PropertyAPI> properties;
List<ConstantAPI> constants;
List<SignalAPI> signals_;
List<EnumAPI> enums;
List<OperatorAPI> operators; // For builtin types.
};
static String get_type_name(const PropertyInfo &info) {
if (info.type == Variant::INT && (info.usage & PROPERTY_USAGE_CLASS_IS_ENUM)) {
return String("enum.") + String(info.class_name).replace(".", "::");
}
if (info.class_name != StringName()) {
return info.class_name;
}
if (info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
return info.class_name;
}
if (info.type == Variant::NIL && (info.usage & PROPERTY_USAGE_NIL_IS_VARIANT)) {
return "Variant";
}
if (info.type == Variant::NIL) {
return "void";
}
return Variant::get_type_name(info.type);
}
/*
* Some comparison helper functions we need
*/
struct MethodInfoComparator {
StringName::AlphCompare compare;
bool operator()(const MethodInfo &p_a, const MethodInfo &p_b) const {
return compare(p_a.name, p_b.name);
}
};
struct PropertyInfoComparator {
StringName::AlphCompare compare;
bool operator()(const PropertyInfo &p_a, const PropertyInfo &p_b) const {
return compare(p_a.name, p_b.name);
}
};
struct ConstantAPIComparator {
NoCaseComparator compare;
bool operator()(const ConstantAPI &p_a, const ConstantAPI &p_b) const {
return compare(p_a.constant_name, p_b.constant_name);
}
};
/*
* Reads the entire Godot API to a list
*/
List<ClassAPI> generate_c_api_classes() {
List<ClassAPI> api;
List<StringName> classes;
ClassDB::get_class_list(&classes);
classes.sort_custom<StringName::AlphCompare>();
// Register global constants as a fake CoreConstants singleton class
{
ClassAPI global_constants_api;
global_constants_api.class_name = "CoreConstants";
global_constants_api.api_type = ClassDB::API_CORE;
global_constants_api.is_singleton = true;
global_constants_api.singleton_name = "CoreConstants";
global_constants_api.is_instantiable = false;
const int constants_count = CoreConstants::get_global_constant_count();
Map<StringName, EnumAPI> enum_api_map;
for (int i = 0; i < constants_count; ++i) {
StringName enum_name = CoreConstants::get_global_constant_enum(i);
String name = String(CoreConstants::get_global_constant_name(i));
int value = CoreConstants::get_global_constant_value(i);
if (enum_name == StringName()) {
ConstantAPI constant_api;
constant_api.constant_name = name;
constant_api.constant_value = value;
global_constants_api.constants.push_back(constant_api);
} else {
EnumAPI enum_api;
if (enum_api_map.has(enum_name)) {
enum_api = enum_api_map[enum_name];
} else {
enum_api.name = String(enum_name);
}
enum_api.values.push_back(Pair(value, name));
enum_api_map[enum_name] = enum_api;
}
}
for (const Map<StringName, EnumAPI>::Element *E = enum_api_map.front(); E; E = E->next()) {
global_constants_api.enums.push_back(E->get());
}
global_constants_api.constants.sort_custom<ConstantAPIComparator>();
api.push_back(global_constants_api);
}
for (List<StringName>::Element *e = classes.front(); e != nullptr; e = e->next()) {
StringName class_name = e->get();
if (!ClassDB::is_class_exposed(class_name)) {
continue;
}
ClassAPI class_api;
class_api.api_type = ClassDB::get_api_type(e->get());
class_api.class_name = class_name;
class_api.super_class_name = ClassDB::get_parent_class(class_name);
{
String name = class_name;
if (name.begins_with("_")) {
name.remove(0);
}
class_api.is_singleton = Engine::get_singleton()->has_singleton(name);
if (class_api.is_singleton) {
class_api.singleton_name = name;
}
}
class_api.is_instantiable = !class_api.is_singleton && ClassDB::can_instance(class_name);
{
List<StringName> inheriters;
ClassDB::get_inheriters_from_class("RefCounted", &inheriters);
bool is_ref_counted = !!inheriters.find(class_name) || class_name == "RefCounted";
// @Unclear
class_api.is_ref_counted = !class_api.is_singleton && is_ref_counted;
}
// constants
{
List<String> constant;
ClassDB::get_integer_constant_list(class_name, &constant, true);
constant.sort_custom<NoCaseComparator>();
for (List<String>::Element *c = constant.front(); c != nullptr; c = c->next()) {
ConstantAPI constant_api;
constant_api.constant_name = c->get();
constant_api.constant_value = ClassDB::get_integer_constant(class_name, c->get());
class_api.constants.push_back(constant_api);
}
}
// signals
{
List<MethodInfo> signals_;
ClassDB::get_signal_list(class_name, &signals_, true);
signals_.sort_custom<MethodInfoComparator>();
for (int i = 0; i < signals_.size(); i++) {
SignalAPI signal;
MethodInfo method_info = signals_[i];
signal.name = method_info.name;
for (int j = 0; j < method_info.arguments.size(); j++) {
PropertyInfo argument = method_info.arguments[j];
String type;
String name = argument.name;
if (argument.name.find(":") != -1) {
type = argument.name.get_slice(":", 1);
name = argument.name.get_slice(":", 0);
} else {
type = get_type_name(argument);
}
signal.argument_names.push_back(name);
signal.argument_types.push_back(type);
}
Vector<Variant> default_arguments = method_info.default_arguments;
int default_start = signal.argument_names.size() - default_arguments.size();
for (int j = 0; j < default_arguments.size(); j++) {
signal.default_arguments[default_start + j] = default_arguments[j];
}
class_api.signals_.push_back(signal);
}
}
//properties
{
List<PropertyInfo> properties;
ClassDB::get_property_list(class_name, &properties, true);
properties.sort_custom<PropertyInfoComparator>();
for (List<PropertyInfo>::Element *p = properties.front(); p != nullptr; p = p->next()) {
PropertyAPI property_api;
property_api.name = p->get().name;
property_api.getter = ClassDB::get_property_getter(class_name, p->get().name);
property_api.setter = ClassDB::get_property_setter(class_name, p->get().name);
if (p->get().name.find(":") != -1) {
property_api.type = p->get().name.get_slice(":", 1);
property_api.name = p->get().name.get_slice(":", 0);
} else {
MethodInfo minfo;
ClassDB::get_method_info(class_name, property_api.getter, &minfo, true, false);
property_api.type = get_type_name(minfo.return_val);
}
property_api.index = ClassDB::get_property_index(class_name, p->get().name);
if (!property_api.setter.is_empty() || !property_api.getter.is_empty()) {
class_api.properties.push_back(property_api);
}
}
}
//methods
{
List<MethodInfo> methods;
ClassDB::get_method_list(class_name, &methods, true);
methods.sort_custom<MethodInfoComparator>();
for (List<MethodInfo>::Element *m = methods.front(); m != nullptr; m = m->next()) {
MethodAPI method_api;
MethodBind *method_bind = ClassDB::get_method(class_name, m->get().name);
MethodInfo &method_info = m->get();
//method name
method_api.method_name = method_info.name;
//method return type
if (method_api.method_name.find(":") != -1) {
method_api.return_type = method_api.method_name.get_slice(":", 1);
method_api.method_name = method_api.method_name.get_slice(":", 0);
} else {
method_api.return_type = get_type_name(m->get().return_val);
}
method_api.argument_count = method_info.arguments.size();
method_api.has_varargs = method_bind && method_bind->is_vararg();
// Method flags
method_api.is_virtual = false;
if (method_info.flags) {
const uint32_t flags = method_info.flags;
method_api.is_editor = flags & METHOD_FLAG_EDITOR;
method_api.is_noscript = flags & METHOD_FLAG_NOSCRIPT;
method_api.is_const = flags & METHOD_FLAG_CONST;
method_api.is_reverse = flags & METHOD_FLAG_REVERSE;
method_api.is_virtual = flags & METHOD_FLAG_VIRTUAL;
method_api.is_from_script = flags & METHOD_FLAG_FROM_SCRIPT;
}
method_api.is_virtual = method_api.is_virtual || method_api.method_name[0] == '_';
// method argument name and type
for (int i = 0; i < method_api.argument_count; i++) {
String arg_name;
String arg_type;
PropertyInfo arg_info = method_info.arguments[i];
arg_name = arg_info.name;
if (arg_info.name.find(":") != -1) {
arg_type = arg_info.name.get_slice(":", 1);
arg_name = arg_info.name.get_slice(":", 0);
} else if (arg_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
arg_type = arg_info.class_name;
} else if (arg_info.type == Variant::NIL) {
arg_type = "Variant";
} else if (arg_info.type == Variant::OBJECT) {
arg_type = arg_info.class_name;
if (arg_type == "") {
arg_type = Variant::get_type_name(arg_info.type);
}
} else {
arg_type = Variant::get_type_name(arg_info.type);
}
method_api.argument_names.push_back(arg_name);
method_api.argument_types.push_back(arg_type);
if (method_bind && method_bind->has_default_argument(i)) {
method_api.default_arguments[i] = method_bind->get_default_argument(i);
}
}
class_api.methods.push_back(method_api);
}
}
// enums
{
List<EnumAPI> enums;
List<StringName> enum_names;
ClassDB::get_enum_list(class_name, &enum_names, true);
for (List<StringName>::Element *E = enum_names.front(); E; E = E->next()) {
List<StringName> value_names;
EnumAPI enum_api;
enum_api.name = E->get();
ClassDB::get_enum_constants(class_name, E->get(), &value_names, true);
for (List<StringName>::Element *val_e = value_names.front(); val_e; val_e = val_e->next()) {
int int_val = ClassDB::get_integer_constant(class_name, val_e->get(), nullptr);
enum_api.values.push_back(Pair<int, String>(int_val, val_e->get()));
}
enum_api.values.sort_custom<PairSort<int, String>>();
class_api.enums.push_back(enum_api);
}
}
api.push_back(class_api);
}
return api;
}
/*
* Reads the builtin Variant API to a list
*/
List<ClassAPI> generate_c_builtin_api_types() {
List<ClassAPI> api;
// Special class for the utility methods.
{
ClassAPI utility_api;
utility_api.class_name = "Utilities";
utility_api.is_instantiable = false;
List<StringName> utility_functions;
Variant::get_utility_function_list(&utility_functions);
for (const List<StringName>::Element *E = utility_functions.front(); E; E = E->next()) {
const StringName &function_name = E->get();
MethodAPI function_api;
function_api.method_name = function_name;
function_api.has_varargs = Variant::is_utility_function_vararg(function_name);
function_api.argument_count = function_api.has_varargs ? 0 : Variant::get_utility_function_argument_count(function_name);
function_api.is_const = Variant::get_utility_function_type(function_name) == Variant::UTILITY_FUNC_TYPE_MATH;
for (int i = 0; i < function_api.argument_count; i++) {
function_api.argument_names.push_back(Variant::get_utility_function_argument_name(function_name, i));
Variant::Type arg_type = Variant::get_utility_function_argument_type(function_name, i);
function_api.argument_types.push_back(arg_type == Variant::NIL ? "Variant" : Variant::get_type_name(arg_type));
}
if (Variant::has_utility_function_return_value(function_name)) {
Variant::Type ret_type = Variant::get_utility_function_return_type(function_name);
function_api.return_type = ret_type == Variant::NIL ? "Variant" : Variant::get_type_name(ret_type);
} else {
function_api.return_type = "void";
}
utility_api.methods.push_back(function_api);
}
api.push_back(utility_api);
}
for (int t = 0; t < Variant::VARIANT_MAX; t++) {
Variant::Type type = (Variant::Type)t;
ClassAPI class_api;
class_api.class_name = Variant::get_type_name(type);
class_api.is_instantiable = true;
class_api.has_indexing = Variant::has_indexing(type);
class_api.indexed_type = Variant::get_type_name(Variant::get_indexed_element_type(type));
class_api.is_keyed = Variant::is_keyed(type);
// Types that are passed by reference.
switch (type) {
case Variant::OBJECT:
case Variant::DICTIONARY:
case Variant::ARRAY:
case Variant::PACKED_BYTE_ARRAY:
case Variant::PACKED_INT32_ARRAY:
case Variant::PACKED_INT64_ARRAY:
case Variant::PACKED_FLOAT32_ARRAY:
case Variant::PACKED_FLOAT64_ARRAY:
case Variant::PACKED_STRING_ARRAY:
case Variant::PACKED_VECTOR2_ARRAY:
case Variant::PACKED_VECTOR3_ARRAY:
case Variant::PACKED_COLOR_ARRAY:
class_api.is_ref_counted = true;
break;
default:
class_api.is_ref_counted = false;
break;
}
// Methods.
List<StringName> methods;
Variant::get_builtin_method_list(type, &methods);
for (const List<StringName>::Element *E = methods.front(); E; E = E->next()) {
const StringName &method_name = E->get();
MethodAPI method_api;
method_api.method_name = method_name;
method_api.argument_count = Variant::get_builtin_method_argument_count(type, method_name);
method_api.has_varargs = Variant::is_builtin_method_vararg(type, method_name);
method_api.is_const = Variant::is_builtin_method_const(type, method_name);
method_api.is_static = Variant::is_builtin_method_static(type, method_name);
for (int i = 0; i < method_api.argument_count; i++) {
method_api.argument_names.push_back(Variant::get_builtin_method_argument_name(type, method_name, i));
Variant::Type arg_type = Variant::get_builtin_method_argument_type(type, method_name, i);
method_api.argument_types.push_back(arg_type == Variant::NIL ? "Variant" : Variant::get_type_name(arg_type));
}
Vector<Variant> default_arguments = Variant::get_builtin_method_default_arguments(type, method_name);
int default_start = method_api.argument_names.size() - default_arguments.size();
for (int i = 0; i < default_arguments.size(); i++) {
method_api.default_arguments[default_start + i] = default_arguments[i];
}
if (Variant::has_builtin_method_return_value(type, method_name)) {
Variant::Type ret_type = Variant::get_builtin_method_return_type(type, method_name);
method_api.return_type = ret_type == Variant::NIL ? "Variant" : Variant::get_type_name(ret_type);
} else {
method_api.return_type = "void";
}
class_api.methods.push_back(method_api);
}
// Constructors.
for (int c = 0; c < Variant::get_constructor_count(type); c++) {
MethodAPI constructor_api;
constructor_api.method_name = Variant::get_type_name(type);
constructor_api.argument_count = Variant::get_constructor_argument_count(type, c);
constructor_api.return_type = Variant::get_type_name(type);
for (int i = 0; i < constructor_api.argument_count; i++) {
constructor_api.argument_names.push_back(Variant::get_constructor_argument_name(type, c, i));
Variant::Type arg_type = Variant::get_constructor_argument_type(type, c, i);
constructor_api.argument_types.push_back(arg_type == Variant::NIL ? "Variant" : Variant::get_type_name(arg_type));
}
class_api.constructors.push_back(constructor_api);
}
// Constants.
List<StringName> constants;
Variant::get_constants_for_type(type, &constants);
for (const List<StringName>::Element *E = constants.front(); E; E = E->next()) {
const StringName &constant_name = E->get();
ConstantAPI constant_api;
constant_api.constant_name = constant_name;
constant_api.builtin_constant_value = Variant::get_constant_value(type, constant_name);
constant_api.builtin_constant_type = Variant::get_type_name(constant_api.builtin_constant_value.get_type());
class_api.constants.push_back(constant_api);
}
// Members.
List<StringName> members;
Variant::get_member_list(type, &members);
for (const List<StringName>::Element *E = members.front(); E; E = E->next()) {
const StringName &member_name = E->get();
PropertyAPI member_api;
member_api.name = member_name;
Variant::Type member_type = Variant::get_member_type(type, member_name);
member_api.type = member_type == Variant::NIL ? "Variant" : Variant::get_type_name(member_type);
class_api.properties.push_back(member_api);
}
// Operators.
for (int op = 0; op < Variant::OP_MAX; op++) {
Variant::Operator oper = (Variant::Operator)op;
for (int ot = 0; ot < Variant::VARIANT_MAX; ot++) {
Variant::Type other_type = (Variant::Type)ot;
if (!Variant::get_validated_operator_evaluator(oper, type, other_type)) {
continue;
}
OperatorAPI oper_api;
oper_api.name = Variant::get_operator_name(oper);
oper_api.oper = oper;
oper_api.other_type = Variant::get_type_name(other_type);
oper_api.return_type = Variant::get_type_name(Variant::get_operator_return_type(oper, type, other_type));
class_api.operators.push_back(oper_api);
}
}
api.push_back(class_api);
}
return api;
}
/*
* Generates the JSON source from the API in p_api
*/
static List<String> generate_c_api_json(const List<ClassAPI> &p_api) {
// I'm sorry for the \t mess
List<String> source;
VariantWriter writer;
source.push_back("[\n");
for (const List<ClassAPI>::Element *c = p_api.front(); c != nullptr; c = c->next()) {
ClassAPI api = c->get();
source.push_back("\t{\n");
source.push_back("\t\t\"name\": \"" + api.class_name + "\",\n");
source.push_back("\t\t\"base_class\": \"" + api.super_class_name + "\",\n");
source.push_back(String("\t\t\"api_type\": \"") + (api.api_type == ClassDB::API_CORE ? "core" : (api.api_type == ClassDB::API_EDITOR ? "tools" : "none")) + "\",\n");
source.push_back(String("\t\t\"singleton\": ") + (api.is_singleton ? "true" : "false") + ",\n");
source.push_back("\t\t\"singleton_name\": \"" + api.singleton_name + "\",\n");
source.push_back(String("\t\t\"instantiable\": ") + (api.is_instantiable ? "true" : "false") + ",\n");
source.push_back(String("\t\t\"is_ref_counted\": ") + (api.is_ref_counted ? "true" : "false") + ",\n");
source.push_back("\t\t\"constants\": {\n");
for (List<ConstantAPI>::Element *e = api.constants.front(); e; e = e->next()) {
source.push_back("\t\t\t\"" + e->get().constant_name + "\": " + String::num_int64(e->get().constant_value) + (e->next() ? "," : "") + "\n");
}
source.push_back("\t\t},\n");
source.push_back("\t\t\"properties\": [\n");
for (List<PropertyAPI>::Element *e = api.properties.front(); e; e = e->next()) {
source.push_back("\t\t\t{\n");
source.push_back("\t\t\t\t\"name\": \"" + e->get().name + "\",\n");
source.push_back("\t\t\t\t\"type\": \"" + e->get().type + "\",\n");
source.push_back("\t\t\t\t\"getter\": \"" + e->get().getter + "\",\n");
source.push_back("\t\t\t\t\"setter\": \"" + e->get().setter + "\",\n");
source.push_back(String("\t\t\t\t\"index\": ") + itos(e->get().index) + "\n");
source.push_back(String("\t\t\t}") + (e->next() ? "," : "") + "\n");
}
source.push_back("\t\t],\n");
source.push_back("\t\t\"signals\": [\n");
for (List<SignalAPI>::Element *e = api.signals_.front(); e; e = e->next()) {
source.push_back("\t\t\t{\n");
source.push_back("\t\t\t\t\"name\": \"" + e->get().name + "\",\n");
source.push_back("\t\t\t\t\"arguments\": [\n");
for (int i = 0; i < e->get().argument_names.size(); i++) {
source.push_back("\t\t\t\t\t{\n");
source.push_back("\t\t\t\t\t\t\"name\": \"" + e->get().argument_names[i] + "\",\n");
source.push_back("\t\t\t\t\t\t\"type\": \"" + e->get().argument_types[i] + "\",\n");
source.push_back(String("\t\t\t\t\t\t\"has_default_value\": ") + (e->get().default_arguments.has(i) ? "true" : "false") + ",\n");
String default_value;
if (e->get().default_arguments.has(i)) {
writer.write_to_string(e->get().default_arguments[i], default_value);
default_value = default_value.replace("\n", "").json_escape();
}
source.push_back("\t\t\t\t\t\t\"default_value\": \"" + default_value + "\"\n");
source.push_back(String("\t\t\t\t\t}") + ((i < e->get().argument_names.size() - 1) ? "," : "") + "\n");
}
source.push_back("\t\t\t\t]\n");
source.push_back(String("\t\t\t}") + (e->next() ? "," : "") + "\n");
}
source.push_back("\t\t],\n");
source.push_back("\t\t\"methods\": [\n");
for (List<MethodAPI>::Element *e = api.methods.front(); e; e = e->next()) {
source.push_back("\t\t\t{\n");
source.push_back("\t\t\t\t\"name\": \"" + e->get().method_name + "\",\n");
source.push_back("\t\t\t\t\"return_type\": \"" + e->get().return_type + "\",\n");
source.push_back(String("\t\t\t\t\"is_editor\": ") + (e->get().is_editor ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"is_noscript\": ") + (e->get().is_noscript ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"is_const\": ") + (e->get().is_const ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"is_reverse\": ") + (e->get().is_reverse ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"is_virtual\": ") + (e->get().is_virtual ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"has_varargs\": ") + (e->get().has_varargs ? "true" : "false") + ",\n");
source.push_back(String("\t\t\t\t\"is_from_script\": ") + (e->get().is_from_script ? "true" : "false") + ",\n");
source.push_back("\t\t\t\t\"arguments\": [\n");
for (int i = 0; i < e->get().argument_names.size(); i++) {
source.push_back("\t\t\t\t\t{\n");
source.push_back("\t\t\t\t\t\t\"name\": \"" + e->get().argument_names[i] + "\",\n");
source.push_back("\t\t\t\t\t\t\"type\": \"" + e->get().argument_types[i] + "\",\n");
source.push_back(String("\t\t\t\t\t\t\"has_default_value\": ") + (e->get().default_arguments.has(i) ? "true" : "false") + ",\n");
String default_value;
if (e->get().default_arguments.has(i)) {
writer.write_to_string(e->get().default_arguments[i], default_value);
default_value = default_value.replace("\n", "").json_escape();
}
source.push_back("\t\t\t\t\t\t\"default_value\": \"" + default_value + "\"\n");
source.push_back(String("\t\t\t\t\t}") + ((i < e->get().argument_names.size() - 1) ? "," : "") + "\n");
}
source.push_back("\t\t\t\t]\n");
source.push_back(String("\t\t\t}") + (e->next() ? "," : "") + "\n");
}
source.push_back("\t\t],\n");
source.push_back("\t\t\"enums\": [\n");
for (List<EnumAPI>::Element *e = api.enums.front(); e; e = e->next()) {
source.push_back("\t\t\t{\n");
source.push_back("\t\t\t\t\"name\": \"" + e->get().name + "\",\n");
source.push_back("\t\t\t\t\"values\": {\n");
for (List<Pair<int, String>>::Element *val_e = e->get().values.front(); val_e; val_e = val_e->next()) {
source.push_back("\t\t\t\t\t\"" + val_e->get().second + "\": " + itos(val_e->get().first));
source.push_back(String((val_e->next() ? "," : "")) + "\n");
}
source.push_back("\t\t\t\t}\n");
source.push_back(String("\t\t\t}") + (e->next() ? "," : "") + "\n");
}
source.push_back("\t\t]\n");
source.push_back(String("\t}") + (c->next() ? "," : "") + "\n");
}
source.push_back("]");
return source;
}
static int indent_level = 0;
static void append_indented(StringBuilder &p_source, const String &p_text) {
for (int i = 0; i < indent_level; i++) {
p_source.append("\t");
}
p_source.append(p_text);
p_source.append("\n");
}
static void append_indented(StringBuilder &p_source, const char *p_text) {
for (int i = 0; i < indent_level; i++) {
p_source.append("\t");
}
p_source.append(p_text);
p_source.append("\n");
}
static void write_builtin_method(StringBuilder &p_source, const MethodAPI &p_method) {
VariantWriter writer;
append_indented(p_source, vformat(R"("name": "%s",)", p_method.method_name));
append_indented(p_source, vformat(R"("return_type": "%s",)", p_method.return_type));
append_indented(p_source, vformat(R"("is_const": %s,)", p_method.is_const ? "true" : "false"));
append_indented(p_source, vformat(R"("is_static": %s,)", p_method.is_static ? "true" : "false"));
append_indented(p_source, vformat(R"("has_varargs": %s,)", p_method.has_varargs ? "true" : "false"));
append_indented(p_source, R"("arguments": [)");
indent_level++;
for (int i = 0; i < p_method.argument_count; i++) {
append_indented(p_source, "{");
indent_level++;
append_indented(p_source, vformat(R"("name": "%s",)", p_method.argument_names[i]));
append_indented(p_source, vformat(R"("type": "%s",)", p_method.argument_types[i]));
append_indented(p_source, vformat(R"("has_default_value": %s,)", p_method.default_arguments.has(i) ? "true" : "false"));
String default_value;
if (p_method.default_arguments.has(i)) {
writer.write_to_string(p_method.default_arguments[i], default_value);
default_value = default_value.replace("\n", "").json_escape();
}
append_indented(p_source, vformat(R"("default_value": "%s")", default_value));
indent_level--;
append_indented(p_source, i < p_method.argument_count - 1 ? "}," : "}");
}
indent_level--;
append_indented(p_source, "]");
}
static List<String> generate_c_builtin_api_json(const List<ClassAPI> &p_api) {
StringBuilder source;
source.append("[\n");
indent_level = 1;
for (const List<ClassAPI>::Element *C = p_api.front(); C; C = C->next()) {
const ClassAPI &class_api = C->get();
append_indented(source, "{");
indent_level++;
append_indented(source, vformat(R"("name": "%s",)", class_api.class_name));
append_indented(source, vformat(R"("is_instantiable": %s,)", class_api.is_instantiable ? "true" : "false"));
append_indented(source, vformat(R"("is_ref_counted": %s,)", class_api.is_ref_counted ? "true" : "false"));
append_indented(source, vformat(R"("has_indexing": %s,)", class_api.has_indexing ? "true" : "false"));
append_indented(source, vformat(R"("indexed_type": "%s",)", class_api.has_indexing && class_api.indexed_type == "Nil" ? "Variant" : class_api.indexed_type));
append_indented(source, vformat(R"("is_keyed": %s,)", class_api.is_keyed ? "true" : "false"));
// Constructors.
append_indented(source, R"("constructors": [)");
indent_level++;
for (const List<MethodAPI>::Element *E = class_api.constructors.front(); E; E = E->next()) {
const MethodAPI &constructor = E->get();
append_indented(source, "{");
indent_level++;
write_builtin_method(source, constructor);
indent_level--;
append_indented(source, E->next() ? "}," : "}");
}
indent_level--;
append_indented(source, "],");
// Constants.
append_indented(source, R"("constants": [)");
indent_level++;
for (const List<ConstantAPI>::Element *E = class_api.constants.front(); E; E = E->next()) {
const ConstantAPI &constant = E->get();
append_indented(source, "{");
indent_level++;
append_indented(source, vformat(R"("name": "%s",)", constant.constant_name));
append_indented(source, vformat(R"("type": "%s",)", constant.builtin_constant_type));
append_indented(source, vformat(R"("value": "%s")", constant.builtin_constant_value.operator String()));
indent_level--;
append_indented(source, E->next() ? "}," : "}");
}
indent_level--;
append_indented(source, "],");
// Methods.
append_indented(source, R"("methods": [)");
indent_level++;
for (const List<MethodAPI>::Element *E = class_api.methods.front(); E; E = E->next()) {
const MethodAPI &method = E->get();
append_indented(source, "{");
indent_level++;
write_builtin_method(source, method);
indent_level--;
append_indented(source, E->next() ? "}," : "}");
}
indent_level--;
append_indented(source, "],");
// Members.
append_indented(source, R"("members": [)");
indent_level++;
for (const List<PropertyAPI>::Element *E = class_api.properties.front(); E; E = E->next()) {
const PropertyAPI &member = E->get();
append_indented(source, "{");
indent_level++;
append_indented(source, vformat(R"("name": "%s",)", member.name));
append_indented(source, vformat(R"("type": "%s")", member.type));
indent_level--;
append_indented(source, E->next() ? "}," : "}");
}
indent_level--;
append_indented(source, "],");
// Operators.
append_indented(source, R"("operators": [)");
indent_level++;
for (const List<OperatorAPI>::Element *E = class_api.operators.front(); E; E = E->next()) {
const OperatorAPI &oper = E->get();
append_indented(source, "{");
indent_level++;
append_indented(source, vformat(R"("name": "%s",)", oper.name));
append_indented(source, vformat(R"("operator": %d,)", oper.oper));
append_indented(source, vformat(R"("other_type": "%s",)", oper.other_type));
append_indented(source, vformat(R"("return_type": "%s")", oper.return_type));
indent_level--;
append_indented(source, E->next() ? "}," : "}");
}
indent_level--;
append_indented(source, "]");
indent_level--;
append_indented(source, C->next() ? "}," : "}");
}
indent_level--;
source.append("]\n");
List<String> result;
result.push_back(source.as_string());
return result;
}
#endif
/*
* Saves the whole Godot API to a JSON file located at
* p_path
*/
Error generate_c_api(const String &p_path) {
#ifndef TOOLS_ENABLED
return ERR_BUG;
#else
List<ClassAPI> api = generate_c_api_classes();
List<String> json_source = generate_c_api_json(api);
return save_file(p_path, json_source);
#endif
}
/*
* Saves the builtin Godot API to a JSON file located at
* p_path
*/
Error generate_c_builtin_api(const String &p_path) {
#ifndef TOOLS_ENABLED
return ERR_BUG;
#else
List<ClassAPI> api = generate_c_builtin_api_types();
List<String> json_source = generate_c_builtin_api_json(api);
return save_file(p_path, json_source);
#endif
}