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quickjs_binder.cpp
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#include "core/config/engine.h"
#include "core/config/project_settings.h"
#include "core/core_bind.h"
#include "core/core_constants.h"
#include "core/io/file_access.h"
#include "core/io/json.h"
#include "core/math/expression.h"
#include "core/os/os.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_settings.h"
#endif
#include "../../javascript_instance.h"
#include "../../src/language/javascript_language.h"
#include "quickjs_binder.h"
#include "quickjs_callable.h"
#include "quickjs_worker.h"
#include <cstring>
SafeNumeric<uint32_t> QuickJSBinder::global_context_id;
SafeNumeric<uint64_t> QuickJSBinder::global_transfer_id;
HashMap<uint64_t, Variant> QuickJSBinder::transfer_deopot;
HashMap<String, const char *> QuickJSBinder::class_remap;
List<String> compiling_modules;
struct GodotMethodArguments {
Variant *arguments;
const Variant **ptr;
GodotMethodArguments(int argc) {
if (argc) {
arguments = memnew_arr(Variant, argc);
ptr = memnew_arr(const Variant *, argc);
for (int i = 0; i < argc; i++) {
ptr[i] = &arguments[i];
}
} else {
arguments = NULL;
ptr = NULL;
}
}
~GodotMethodArguments() {
if (ptr)
memdelete_arr(ptr);
if (arguments)
memdelete_arr(arguments);
}
};
_FORCE_INLINE_ static JavaScriptGCHandler *BINDING_DATA_FROM_GD(Object *p_object) {
ERR_FAIL_COND_V(p_object == NULL, NULL);
JavaScriptLanguage *lang = JavaScriptLanguage::get_singleton();
JavaScriptGCHandler *bind = (JavaScriptGCHandler *)(p_object)->get_instance_binding(lang, lang->get_instance_binding_callbacks());
return bind;
}
_FORCE_INLINE_ static JavaScriptGCHandler *BINDING_DATA_FROM_GD(JSContext *ctx, Object *p_object) {
ERR_FAIL_COND_V(p_object == NULL || ctx == NULL, NULL);
JavaScriptGCHandler *bind = BINDING_DATA_FROM_GD(p_object);
if (bind) {
if (bind->context && bind->context != ctx) {
ERR_FAIL_V_MSG(NULL, "The object is not belong to this context");
}
if (!bind->context) {
QuickJSBinder::bind_gc_object(ctx, bind, p_object);
}
}
return bind;
}
JSValue QuickJSBinder::console_functions(JSContext *ctx, JSValue this_val, int argc, JSValue *argv, int magic) {
PackedStringArray args;
args.resize(argc);
QuickJSBinder *binder = get_context_binder(ctx);
JSValue object_to_json = JS_GetPropertyStr(ctx, binder->console_object, PROP_NAME_CONSOLE_LOG_OBJECT_TO_JSON);
bool to_json = js_to_bool(ctx, object_to_json);
JS_FreeValue(ctx, object_to_json);
for (int i = 0; i < argc; ++i) {
int32_t tag = JS_VALUE_GET_TAG(argv[i]);
if (to_json && tag == JS_TAG_OBJECT && NULL == BINDING_DATA_FROM_JS(ctx, argv[i])) {
JSValue str = JS_JSONStringify(ctx, argv[i], JS_UNDEFINED, JS_UNDEFINED);
args.write[i] = js_to_string(ctx, str);
JS_FreeValue(ctx, str);
} else {
size_t size;
const char *utf8 = JS_ToCStringLen(ctx, &size, argv[i]);
args.write[i].parse_utf8(utf8, size);
JS_FreeCString(ctx, utf8);
}
}
JavaScriptStackInfo stack_top;
List<JavaScriptStackInfo> stacks;
String message = "";
for (int i = 0; i < argc; ++i) {
message += args[i];
if (i < argc - 1) {
message += " ";
}
}
if (magic == CONSOLE_ERROR || magic == CONSOLE_TRACE || magic == CONSOLE_WARN) {
if (binder->get_stacks(stacks) == OK) {
stack_top = stacks.front()->get();
message += ENDL;
message += binder->get_backtrace_message(stacks);
}
}
switch (magic) {
case CONSOLE_ERROR:
_err_print_error(stack_top.function.utf8().get_data(), stack_top.file.utf8().get_data(), stack_top.line, message, ErrorHandlerType::ERR_HANDLER_ERROR);
break;
case CONSOLE_WARN:
_err_print_error(stack_top.function.utf8().get_data(), stack_top.file.utf8().get_data(), stack_top.line, message, ErrorHandlerType::ERR_HANDLER_WARNING);
break;
case CONSOLE_LOG:
case CONSOLE_TRACE:
default:
print_line(message);
break;
}
return JS_UNDEFINED;
}
void QuickJSBinder::add_global_console() {
JSValue console = JS_NewObject(ctx);
JSValue log = JS_NewCFunctionMagic(ctx, console_functions, "log", 0, JS_CFUNC_generic_magic, CONSOLE_LOG);
JSValue warn = JS_NewCFunctionMagic(ctx, console_functions, "warn", 0, JS_CFUNC_generic_magic, CONSOLE_WARN);
JSValue err = JS_NewCFunctionMagic(ctx, console_functions, "error", 0, JS_CFUNC_generic_magic, CONSOLE_ERROR);
JSValue trace = JS_NewCFunctionMagic(ctx, console_functions, "trace", 0, JS_CFUNC_generic_magic, CONSOLE_TRACE);
JS_DefinePropertyValueStr(ctx, global_object, "console", console, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, console, "log", log, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, console, "warn", warn, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, console, "error", err, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, console, "trace", trace, PROP_DEF_DEFAULT);
console_object = JS_DupValue(ctx, console);
}
void QuickJSBinder::add_global_properties() {
// globalThis.requestAnimationFrame
JSValue js_func_requestAnimationFrame = JS_NewCFunction(ctx, global_request_animation_frame, "requestAnimationFrame", 1);
JS_DefinePropertyValueStr(ctx, global_object, "requestAnimationFrame", js_func_requestAnimationFrame, PROP_DEF_DEFAULT);
// globalThis.cancelAnimationFrame
JSValue js_func_cancelAnimationFrame = JS_NewCFunction(ctx, global_cancel_animation_frame, "cancelAnimationFrame", 1);
JS_DefinePropertyValueStr(ctx, global_object, "cancelAnimationFrame", js_func_cancelAnimationFrame, PROP_DEF_DEFAULT);
}
JSValue QuickJSBinder::object_method(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int method_id) {
JavaScriptGCHandler *bind = BINDING_DATA_FROM_JS(ctx, this_val);
ERR_FAIL_NULL_V(bind, JS_ThrowReferenceError(ctx, "Call native method without native binding data"));
ERR_FAIL_NULL_V(bind->godot_object, JS_ThrowReferenceError(ctx, "Call native method without native object caller"));
QuickJSBinder *binder = QuickJSBinder::get_context_binder(ctx);
Object *obj = bind->get_godot_object();
MethodBind *mb = binder->godot_methods[method_id];
if (!mb->is_vararg()) {
argc = MIN(argc, mb->get_argument_count());
}
GodotMethodArguments args(argc);
for (int i = 0; i < argc; ++i) {
args.arguments[i] = var_to_variant(ctx, argv[i]);
}
Callable::CallError call_err;
Variant ret_val = mb->call(obj, args.ptr, argc, call_err);
JSValue ret = variant_to_var(ctx, ret_val);
#ifdef DEBUG_METHODS_ENABLED
String err_message;
switch (call_err.error) {
case Callable::CallError::CALL_ERROR_INVALID_ARGUMENT:
err_message = vformat("Argument of type '%s' is not assignable to parameter #%d of type '%s'", Variant::get_type_name(args.arguments[call_err.argument].get_type()), call_err.argument, Variant::get_type_name((Variant::Type)call_err.expected));
break;
case Callable::CallError::CALL_ERROR_INVALID_METHOD:
err_message = vformat("Invalid method '%s' for type '%s'", mb->get_name(), obj->get_class_name());
break;
case Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS:
err_message = vformat("Too few arguments for method '%s'", mb->get_name());
break;
case Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS:
err_message = vformat("Too many arguments for method '%s'", mb->get_name());
break;
case Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL:
err_message = vformat("Attempt to call '%s' on a null instance.", mb->get_name());
break;
default:
break;
}
if (call_err.error != Callable::CallError::CALL_OK) {
List<JavaScriptStackInfo> stacks;
String stack_message;
if (binder->get_stacks(stacks) == OK) {
stack_message = binder->get_backtrace_message(stacks);
}
ERR_PRINT(obj->get_class() + "." + mb->get_name() + ENDL + err_message + ENDL + stack_message);
JS_FreeValue(ctx, ret);
ret = JS_ThrowTypeError(ctx, "%s", err_message.utf8().get_data());
}
#endif
return ret;
}
JSValue QuickJSBinder::object_indexed_property(JSContext *ctx, JSValue this_val, int argc, JSValue *argv, int property_id) {
JavaScriptGCHandler *bind = BINDING_DATA_FROM_JS(ctx, this_val);
ERR_FAIL_NULL_V(bind, JS_ThrowReferenceError(ctx, "Using indexed property without native binding data"));
ERR_FAIL_NULL_V(bind->godot_object, JS_ThrowReferenceError(ctx, "Using indexed property without native object caller"));
QuickJSBinder *binder = QuickJSBinder::get_context_binder(ctx);
bool is_setter = argc > 0;
Object *obj = bind->get_godot_object();
const ClassDB::PropertySetGet *prop = binder->godot_object_indexed_properties[property_id];
MethodBind *mb = is_setter ? prop->_setptr : prop->_getptr;
GodotMethodArguments args(2);
args.arguments[0] = prop->index;
if (is_setter) {
args.arguments[1] = var_to_variant(ctx, argv[0]);
}
Callable::CallError call_err;
Variant ret_val = mb->call(obj, args.ptr, argc + 1, call_err);
return variant_to_var(ctx, ret_val);
}
Vector<String> QuickJSBinder::get_function_args(JSContext *ctx, const JSValue p_val) {
Vector<String> args;
if (JS_IsFunction(ctx, p_val)) {
const String function = String(var_to_variant(ctx, p_val)); // Returns function as string
const int start = function.find_char('(') + 1;
const int end = function.find_char(')');
const String argsAsString = function.substr(start, end - start);
const Vector<String> resolvedArgs = argsAsString.split(",", false);
for (const String &resolved_arg : resolvedArgs) {
args.push_back(resolved_arg.strip_edges());
}
}
return args;
}
JSValue QuickJSBinder::variant_to_var(JSContext *ctx, const Variant p_var) {
switch (p_var.get_type()) {
case Variant::BOOL:
return ((bool)p_var) ? JS_TRUE : JS_FALSE;
case Variant::INT:
return JS_NewInt64(ctx, int64_t(p_var));
case Variant::FLOAT:
return JS_NewFloat64(ctx, (double)(p_var));
case Variant::NODE_PATH:
case Variant::STRING:
return to_js_string(ctx, p_var);
case Variant::OBJECT: {
Object *obj = p_var;
if (obj == NULL)
return JS_NULL;
JavaScriptGCHandler *data = BINDING_DATA_FROM_GD(ctx, obj);
ERR_FAIL_NULL_V(data, JS_UNDEFINED);
ERR_FAIL_NULL_V(data->javascript_object, JS_UNDEFINED);
ERR_FAIL_COND_V(data->context != ctx, (JS_UNDEFINED));
JSValue js_obj = JS_MKPTR(JS_TAG_OBJECT, data->javascript_object);
JS_DupValue(ctx, js_obj);
return js_obj;
}
case Variant::ARRAY: {
Array arr = p_var;
JSValue js_arr = JS_NewArray(ctx);
for (int i = 0; i < arr.size(); i++) {
JS_SetPropertyUint32(ctx, js_arr, i, variant_to_var(ctx, arr[int(i)]));
}
return js_arr;
}
case Variant::DICTIONARY: {
Dictionary dict = static_cast<Dictionary>(p_var);
JSValue obj = JS_NewObject(ctx);
Array keys = dict.keys();
for (int i = 0; i < keys.size(); i++) {
const Variant &key = keys[i];
const Variant &value = dict[key];
String key_str = keys[i];
JS_SetPropertyStr(ctx, obj, key_str.utf8().get_data(), variant_to_var(ctx, value));
}
return obj;
}
case Variant::NIL:
return JS_NULL;
default:
return QuickJSBuiltinBinder::new_object_from(ctx, p_var);
}
}
Variant QuickJSBinder::var_to_variant(JSContext *ctx, JSValue p_val) {
int64_t tag = JS_VALUE_GET_TAG(p_val);
switch (tag) {
case JS_TAG_INT:
return Variant(JS_VALUE_GET_INT(p_val));
case JS_TAG_BOOL:
return Variant(bool(JS_VALUE_GET_INT(p_val)));
case JS_TAG_FLOAT64:
return Variant(real_t(JS_VALUE_GET_FLOAT64(p_val)));
case JS_TAG_STRING:
return js_to_string(ctx, p_val);
case JS_TAG_OBJECT: {
if (JS_VALUE_GET_PTR(p_val) == NULL) {
return Variant();
}
int length = get_js_array_length(ctx, p_val);
if (length != -1) { // Array
Array arr;
arr.resize(length);
for (int i = 0; i < length; i++) {
JSValue val = JS_GetPropertyUint32(ctx, p_val, i);
arr[int(i)] = var_to_variant(ctx, val);
JS_FreeValue(ctx, val);
}
return arr;
} else if (JavaScriptGCHandler *bind = BINDING_DATA_FROM_JS(ctx, p_val)) { // Binding object
ERR_FAIL_NULL_V(bind, Variant());
ERR_FAIL_NULL_V(bind->godot_object, Variant());
return bind->get_value();
} else if (JS_IsFunction(ctx, p_val)) {
JSValue function = JS_FunctionToString(ctx, p_val);
String ret = js_to_string(ctx, function);
JS_FreeValue(ctx, function);
return ret;
} else { // Plain Object as Dictionary
List<void *> stack;
return js_to_dictionary(ctx, p_val, stack);
}
} break;
case JS_TAG_NULL:
case JS_TAG_UNDEFINED:
return Variant();
break;
default:
#ifdef JS_NAN_BOXING
if (tag > JS_TAG_FLOAT64 || tag < JS_TAG_FIRST) {
return Variant(real_t(JS_VALUE_GET_FLOAT64(p_val)));
}
#endif
return Variant();
}
}
JSValue QuickJSBinder::godot_builtin_function(JSContext *ctx, JSValue this_val, int argc, JSValue *argv, int magic) {
Variant ret;
String err_msg;
#if 0 // TODO: builtin functions
Expression::BuiltinFunc func = (Expression::BuiltinFunc)magic;
int arg_required = Expression::get_func_argument_count(func);
if (argc < arg_required) {
String func_name = Expression::get_func_name(func);
return JS_ThrowTypeError(ctx, "%d arguments expected for builtin funtion %s", arg_required, func_name.utf8().get_data());
}
QuickJSBinder *binder = get_context_binder(ctx);
GodotMethodArguments args(argc);
for (int i = 0; i < argc; ++i) {
args.arguments[i] = var_to_variant(ctx, argv[i]);
}
Expression::exec_func(func, args.ptr, &ret, err, err_msg);
#ifdef DEBUG_METHODS_ENABLED
if (err.error != Variant::CallError::CALL_OK) {
String func_name = Expression::get_func_name(func);
if (err_msg.empty()) {
switch (err.error) {
case Variant::CallError::CALL_ERROR_INVALID_ARGUMENT:
err_msg = vformat("Argument of type '%s' is not assignable to parameter #%d of type '%s'", Variant::get_type_name(args.arguments[err.argument].get_type()), err.argument, Variant::get_type_name(err.expected));
break;
case Variant::CallError::CALL_ERROR_INVALID_METHOD:
err_msg = vformat("Invalid builtin function", func_name);
break;
case Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS:
err_msg = vformat("Too few arguments builtin function", func_name);
break;
case Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS:
err_msg = vformat("Too many arguments for builtin function", func_name);
break;
default:
break;
}
}
}
#endif
if (err.error != Variant::CallError::CALL_OK) {
String func_name = Expression::get_func_name(func);
return JS_ThrowTypeError(ctx, "Call builtin function error %s: %s", func_name.utf8().get_data(), err_msg.utf8().get_data());
}
#endif
return variant_to_var(ctx, ret);
}
bool QuickJSBinder::validate_type(JSContext *ctx, Variant::Type p_type, JSValueConst &p_val) {
switch (p_type) {
case Variant::NIL:
return JS_IsNull(p_val) || JS_IsUndefined(p_val);
case Variant::BOOL:
case Variant::INT:
case Variant::FLOAT:
return JS_IsNumber(p_val) || JS_IsBool(p_val) || JS_IsNull(p_val) || JS_IsUndefined(p_val);
case Variant::STRING:
return JS_IsString(p_val);
case Variant::DICTIONARY:
return JS_IsObject(p_val);
case Variant::ARRAY:
return JS_IsArray(ctx, p_val);
default: {
JavaScriptGCHandler *bind = BINDING_DATA_FROM_JS(ctx, p_val);
return bind != NULL && bind->type == p_type;
}
}
}
void QuickJSBinder::dump_exception(JSContext *ctx, const JSValue &p_exception, JavaScriptError *r_error) {
JSValue err_file = JS_GetProperty(ctx, p_exception, JS_ATOM_fileName);
JSValue err_line = JS_GetProperty(ctx, p_exception, JS_ATOM_lineNumber);
JSValue err_msg = JS_GetProperty(ctx, p_exception, JS_ATOM_message);
JSValue err_stack = JS_GetProperty(ctx, p_exception, JS_ATOM_stack);
JS_ToInt32(ctx, &r_error->line, err_line);
r_error->message = js_to_string(ctx, err_msg);
r_error->file = js_to_string(ctx, err_file);
r_error->stack.push_back(js_to_string(ctx, err_stack));
r_error->column = 0;
JS_FreeValue(ctx, err_file);
JS_FreeValue(ctx, err_line);
JS_FreeValue(ctx, err_msg);
JS_FreeValue(ctx, err_stack);
}
String QuickJSBinder::error_to_string(const JavaScriptError &p_error) {
String message = "JavaScript Error";
if (p_error.stack.size()) {
message += p_error.stack[0];
}
message += p_error.message;
for (int i = 1; i < p_error.stack.size(); i++) {
message += p_error.stack[i];
}
return message;
}
Error QuickJSBinder::get_stacks(List<JavaScriptStackInfo> &r_stacks) {
JSValue error_constructor = JS_GetProperty(ctx, global_object, JS_ATOM_Error);
JSValue error = JS_CallConstructor(ctx, error_constructor, 0, NULL);
JSValue stack = JS_GetProperty(ctx, error, JS_ATOM_stack);
String stack_text = js_to_string(ctx, stack);
Vector<String> raw_stacks = stack_text.split("\n", false);
for (int i = 1; i < raw_stacks.size(); i++) {
String line_text = raw_stacks[i].strip_edges();
if (line_text.is_empty())
continue;
JavaScriptStackInfo s;
int colon = line_text.rfind(":");
int bracket = line_text.rfind("(");
s.line = line_text.substr(colon + 1, line_text.length() - colon - 2).to_int();
s.file = line_text.substr(bracket + 1, colon - bracket - 1);
s.function = line_text.substr(3, bracket - 4);
r_stacks.push_back(s);
}
JS_FreeValue(ctx, stack);
JS_FreeValue(ctx, error);
JS_FreeValue(ctx, error_constructor);
return OK;
}
String QuickJSBinder::get_backtrace_message(const List<JavaScriptStackInfo> &stacks) {
String message;
for (const List<JavaScriptStackInfo>::Element *E = stacks.front(); E; E = E->next()) {
message += " ";
message += vformat("at %s (%s:%d)", E->get().function, E->get().file, E->get().line);
if (E != stacks.back()) {
message += ENDL;
}
}
return message;
}
Dictionary QuickJSBinder::js_to_dictionary(JSContext *ctx, const JSValue &p_val, List<void *> &stack) {
Dictionary dict;
HashSet<String> keys;
get_own_property_names(ctx, p_val, &keys);
stack.push_back(JS_VALUE_GET_PTR(p_val));
for (const String &key : keys) {
JSValue v = JS_GetPropertyStr(ctx, p_val, key.utf8().get_data());
Variant val;
if (JS_IsObject(v)) {
void *ptr = JS_VALUE_GET_PTR(v);
if (stack.find(ptr)) {
union {
const void *p;
uint64_t i;
} u;
u.p = ptr;
ERR_PRINT(vformat("Property '%s' circular reference to 0x%X", key, u.i));
JS_FreeValue(ctx, v);
continue;
} else {
stack.push_back(ptr);
val = var_to_variant(ctx, v);
stack.pop_back();
}
} else {
val = var_to_variant(ctx, v);
}
dict[key] = val;
JS_FreeValue(ctx, v);
}
stack.pop_back();
return dict;
}
JSAtom QuickJSBinder::get_atom(JSContext *ctx, const StringName &p_key) {
String name = p_key;
CharString name_str = name.utf8();
JSAtom atom = JS_NewAtom(ctx, name_str.get_data());
return atom;
}
JSValue QuickJSBinder::godot_to_string(JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
String str = var_to_variant(ctx, this_val);
CharString ascii = str.utf8();
return JS_NewStringLen(ctx, ascii.get_data(), ascii.length());
}
JSValue QuickJSBinder::godot_get_type(JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
#ifdef DEBUG_METHODS_ENABLED
ERR_FAIL_COND_V(argc < 1, JS_ThrowTypeError(ctx, "parameter expected for %s.%s", GODOT_OBJECT_NAME, "get_type"));
#endif
Variant value;
if (argc) {
value = var_to_variant(ctx, argv[0]);
}
return JS_NewInt32(ctx, value.get_type());
}
JSValue QuickJSBinder::godot_load(JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
#ifdef DEBUG_METHODS_ENABLED
ERR_FAIL_COND_V(argc < 1 || !JS_IsString(argv[0]), JS_ThrowTypeError(ctx, "string expected for %s.%s", GODOT_OBJECT_NAME, "load"));
#endif
String path = js_to_string(ctx, argv[0]);
Ref<Resource> res = ResourceLoader::load(path);
return variant_to_var(ctx, res);
}
JSValue QuickJSBinder::godot_instance_from_id(JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
#ifdef DEBUG_METHODS_ENABLED
ERR_FAIL_COND_V(argc < 1 || !JS_IsNumber(argv[0]), JS_ThrowTypeError(ctx, "number expected for %s.%s", GODOT_OBJECT_NAME, "instance_from_id"));
#endif
ObjectID id(js_to_uint64(ctx, argv[0]));
Object *obj = ObjectDB::get_instance(id);
return variant_to_var(ctx, obj);
}
JSValue QuickJSBinder::godot_object_method_connect(JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
#ifdef DEBUG_METHODS_ENABLED
ERR_FAIL_COND_V(argc < 2 || !JS_IsString(argv[0]) || !JS_IsFunction(ctx, argv[1]), JS_ThrowTypeError(ctx, "string and function expected for %s.%s", "Object", "connect"));
#endif
JavaScriptGCHandler *bind = BINDING_DATA_FROM_JS(ctx, this_val);
const QuickJSBinder *binder = get_context_binder(ctx);
Object *obj = bind->get_godot_object();
StringName signal = binder->js_to_string(ctx, argv[0]);
Callable callable = memnew(QuickJSCallable(ctx, argv[1]));
Variant params = var_to_variant(ctx, argv[2]);
callable = callable.bind(params); // Add params to function
obj->connect(signal, callable);
return JS_UNDEFINED;
}
void QuickJSBinder::add_debug_binding_info(JSContext *ctx, JSValueConst p_obj, const JavaScriptGCHandler *p_bind) {
if (!p_bind)
return;
JSValue classname = JS_UNDEFINED;
if (p_bind->type != Variant::OBJECT) {
classname = to_js_string(ctx, Variant::get_type_name(p_bind->type));
} else {
if (p_bind->is_object()) {
classname = to_js_string(ctx, p_bind->godot_object->get_class_name());
}
}
Array arr;
String ptr_str = "0x%X";
bool err;
union {
const void *p;
uint64_t i;
} u;
u.p = p_bind->godot_object;
arr.push_back(int(u.i));
ptr_str = ptr_str.sprintf(arr, &err);
JSValue ptrvalue = to_js_string(ctx, ptr_str);
u.p = ctx;
arr[0] = int(u.i);
ptr_str = "0x%X";
ptr_str = ptr_str.sprintf(arr, &err);
JSValue ptrctx = to_js_string(ctx, ptr_str);
JS_DefinePropertyValueStr(ctx, p_obj, "__class__", classname, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, p_obj, "__ptr__", ptrvalue, PROP_DEF_DEFAULT);
JS_DefinePropertyValueStr(ctx, p_obj, "__ctx__", ptrctx, PROP_DEF_DEFAULT);
}
static HashMap<String, String> resolve_path_cache;
String QuickJSBinder::resolve_module_file(const String &file) {
if (const String *ptr = resolve_path_cache.getptr(file)) {
return *ptr;
}
String path = file;
if (FileAccess::exists(path))
return path;
// add extensions to try
String extension = file.get_extension();
List<String> extensions;
JavaScriptLanguage::get_singleton()->get_recognized_extensions(&extensions);
if (extensions.find(extension) == NULL) {
for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
path = file + "." + E->get();
if (FileAccess::exists(path)) {
return path;
}
}
}
// try index file under the folder
for (List<String>::Element *E = extensions.front(); E; E = E->next()) {
path = file + "/index." + E->get();
if (FileAccess::exists(path)) {
return path;
}
}
return "";
}
JSModuleDef *QuickJSBinder::js_module_loader(JSContext *ctx, const char *module_name, void *opaque) {
JSModuleDef *m = NULL;
Error err;
String resolving_file;
resolving_file.parse_utf8(module_name);
String file = resolve_module_file(resolving_file);
ERR_FAIL_COND_V_MSG(file.is_empty(), NULL, "Failed to resolve module: '" + resolving_file + "'.");
resolve_path_cache.insert(resolving_file, file);
QuickJSBinder *binder = QuickJSBinder::get_context_binder(ctx);
if (ModuleCache *ptr = binder->module_cache.getptr(file)) {
m = ptr->module;
}
if (!m) {
List<String> extensions;
JavaScriptLanguage::get_singleton()->get_recognized_extensions(&extensions);
if (extensions.find(file.get_extension()) != NULL) {
Ref<JavaScriptModule> em = ResourceFormatLoaderJavaScriptModule::load_static(file, "", &err);
if (err != OK || !em.is_valid()) {
JS_ThrowReferenceError(ctx, "Could not load module '%s'", file.utf8().get_data());
return NULL;
}
JavaScriptError es_err;
const Vector<uint8_t> &bytecode = em->get_bytecode();
if (bytecode.size()) {
JavaScriptGCHandler js;
if (binder->load_bytecode(bytecode, file, &js) == OK) {
m = static_cast<JSModuleDef *>(js.javascript_object);
}
} else {
String code = em->get_source_code();
if (file.ends_with(EXT_JSON)) {
code = "export default " + code;
}
if (ModuleCache *module = binder->js_compile_and_cache_module(ctx, code, file, &es_err)) {
m = module->module;
}
}
} else { // Try load as Resource
Ref<Resource> res = ResourceLoader::load(file);
if (res.is_null()) {
JS_ThrowReferenceError(ctx, "Could not load module '%s'", file.utf8().get_data());
return NULL;
}
JSValue val = variant_to_var(ctx, res);
m = js_make_module(ctx, file, val);
JS_FreeValue(ctx, val);
ModuleCache module;
Variant hash_var = res;
module.hash = hash_var.hash();
module.module = m;
module.res = res;
module.res->reference(); // Avoid auto release as module don't release automatically
module.res_value = val;
module.flags = MODULE_FLAG_RESOURCE;
module.module = m;
binder->module_cache.insert(file, module);
}
}
return m;
}
JSModuleDef *QuickJSBinder::js_make_module(JSContext *ctx, const String &p_id, const JSValue &p_value) {
JSModuleDef *m = JS_NewCModule(ctx, p_id.utf8().get_data(), resource_module_initializer);
JS_AddModuleExport(ctx, m, "default");
JSValue func = JS_MKPTR(JS_TAG_MODULE, m);
JS_DupValue(ctx, func);
JS_EvalFunction(ctx, func);
JS_SetModuleExport(ctx, m, "default", JS_DupValue(ctx, p_value));
return m;
}
QuickJSBinder::ModuleCache QuickJSBinder::js_compile_module(JSContext *ctx, const String &p_code, const String &p_filename, JavaScriptError *r_error) {
if (NULL != compiling_modules.find(p_filename)) {
String chain;
for (List<String>::Element *E = compiling_modules.front(); E; E = E->next()) {
chain += E->get();
if (E->next() != NULL) {
chain += " <- ";
}
}
ERR_FAIL_V_MSG(ModuleCache(), vformat("Cyclic module import detected:\r\n %s", chain));
}
ModuleCache module;
module.flags = 0;
module.module = NULL;
module.hash = p_code.hash();
CharString code = p_code.utf8();
CharString filename = p_filename.utf8();
const char *cfilename = filename.get_data();
const char *cfilesource = code.get_data();
compiling_modules.push_back(p_filename);
JSValue func = JS_Eval(ctx, cfilesource, code.length(), cfilename, JS_EVAL_TYPE_MODULE | JS_EVAL_FLAG_COMPILE_ONLY);
compiling_modules.pop_back();
if (!JS_IsException(func)) {
module.flags = MODULE_FLAG_SCRIPT;
module.module = static_cast<JSModuleDef *>(JS_VALUE_GET_PTR(func));
module.res_value = JS_UNDEFINED;
} else {
JSValue e = JS_GetException(ctx);
dump_exception(ctx, e, r_error);
JS_Throw(ctx, e);
}
return module;
}
QuickJSBinder::ModuleCache *QuickJSBinder::js_compile_and_cache_module(JSContext *ctx, const String &p_code, const String &p_filename, JavaScriptError *r_error) {
QuickJSBinder *binder = QuickJSBinder::get_context_binder(ctx);
ModuleCache *last_module = binder->module_cache.getptr(p_filename);
if (last_module) {
if (last_module->hash == p_code.hash()) {
#if MODULE_HAS_REFCOUNT
if (last_module->module) {
JSValue val = JS_MKPTR(JS_TAG_MODULE, last_module->module);
JS_DupValue(ctx, val);
}
#endif
return last_module;
} else {
#if MODULE_HAS_REFCOUNT
JSModuleDef *m = last_module->module;
if (m) {
JSValue val = JS_MKPTR(JS_TAG_MODULE, m);
JS_FreeValue(ctx, val);
}
#endif
}
}
ModuleCache mc = js_compile_module(ctx, p_code, p_filename, r_error);
mc.hash = p_code.hash();
if (mc.module) {
binder->module_cache.insert(p_filename, mc);
}
return binder->module_cache.getptr(p_filename);
}
QuickJSBinder::ModuleCache *QuickJSBinder::js_compile_and_cache_module(JSContext *ctx, const Vector<uint8_t> &p_bytecode, const String &p_filename, JavaScriptError *r_error) {
QuickJSBinder *binder = get_context_binder(ctx);
JavaScriptGCHandler module;
if (OK == binder->load_bytecode(p_bytecode, p_filename, &module)) {
return module_cache.getptr(p_filename);
}
return NULL;
}
Error QuickJSBinder::js_evalute_module(JSContext *ctx, QuickJSBinder::ModuleCache *p_module, JavaScriptError *r_error) {
if (p_module->flags & MODULE_FLAG_EVALUATED)
return OK;
JSValue module = JS_MKPTR(JS_TAG_MODULE, p_module->module);
if (JS_IsException(module)) {
JSValue e = JS_GetException(ctx);
dump_exception(ctx, e, r_error);
JS_Throw(ctx, e);
return ERR_PARSE_ERROR;
}
if (!(p_module->flags & MODULE_FLAG_EVALUATED)) {
JSValue ret = JS_EvalFunction(ctx, module);
if (JS_IsException(ret)) {
JSValue e = JS_GetException(ctx);
dump_exception(ctx, e, r_error);
JS_Throw(ctx, e);
return ERR_PARSE_ERROR;
} else {
p_module->flags |= MODULE_FLAG_EVALUATED;
}
JS_FreeValue(ctx, ret);
}
return OK;
}
int QuickJSBinder::resource_module_initializer(JSContext *ctx, JSModuleDef *m) {
return JS_SetModuleExport(ctx, m, "default", JS_UNDEFINED);
}
JSClassID QuickJSBinder::register_class(const ClassDB::ClassInfo *p_cls) {
ClassBindData data;
data.class_id = 0;
data.base_class = NULL;
if (class_remap.has(p_cls->name)) {
data.class_name = class_remap[p_cls->name];
data.jsclass.class_name = class_remap[p_cls->name];
if (strcmp(data.jsclass.class_name, "") == 0) {
return 0;
}
} else {
data.class_name = String(p_cls->name).utf8();
data.jsclass.class_name = data.class_name.get_data();
}
data.jsclass.exotic = NULL;
data.jsclass.gc_mark = NULL;
data.jsclass.call = NULL;
data.gdclass = p_cls;
data.prototype = JS_NewObject(ctx);
// methods
HashMap<StringName, JSValue> methods;
{
godot_methods.resize(internal_godot_method_id + p_cls->method_map.size());
for (const KeyValue<StringName, MethodBind *> &pair : p_cls->method_map) {
if (p_cls->name == "Object") {
const char *connect = "connect";
if (pair.key == connect) {
JSValue func = JS_NewCFunction(ctx, godot_object_method_connect, connect, 3);
JS_DefinePropertyValueStr(ctx, data.prototype, connect, func, PROP_DEF_DEFAULT);
continue;
}
}
MethodBind *mb = pair.value;
godot_methods.set(internal_godot_method_id, mb);
CharString name = String(pair.key).utf8();
JSValue method = JS_NewCFunctionMagic(ctx, &QuickJSBinder::object_method, name.get_data(), mb->get_argument_count(), JS_CFUNC_generic_magic, internal_godot_method_id);
JS_DefinePropertyValueStr(ctx, data.prototype, name.get_data(), method, PROP_DEF_DEFAULT);
methods.insert(pair.key, method);
++internal_godot_method_id;
}
if (p_cls->name == "Object") {
// toString()
JSValue to_string_func = JS_NewCFunction(ctx, godot_to_string, TO_STRING_LITERAL, 0);
JS_DefinePropertyValueStr(ctx, data.prototype, TO_STRING_LITERAL, to_string_func, PROP_DEF_DEFAULT);
// free()
const char *free_func_name = "free";
JSValue free_func = JS_NewCFunction(ctx, object_free, free_func_name, 0);
JS_DefinePropertyValueStr(ctx, data.prototype, free_func_name, free_func, PROP_DEF_DEFAULT);
}
}
// properties
{
for (const KeyValue<StringName, ClassDB::PropertySetGet> &i : p_cls->property_setget) {
const StringName &prop_name = i.key;
const ClassDB::PropertySetGet &prop = i.value;
JSValue setter = JS_UNDEFINED;
JSValue getter = JS_UNDEFINED;
if (prop.index >= 0) {
int size = godot_object_indexed_properties.size();
if (size <= internal_godot_indexed_property_id) {
godot_object_indexed_properties.resize(size + 128);
}
godot_object_indexed_properties.write[internal_godot_indexed_property_id] = ∝
CharString name = String(prop_name).utf8();
getter = JS_NewCFunctionMagic(ctx, &QuickJSBinder::object_indexed_property, name.get_data(), 0, JS_CFUNC_generic_magic, internal_godot_indexed_property_id);
setter = JS_NewCFunctionMagic(ctx, &QuickJSBinder::object_indexed_property, name.get_data(), 1, JS_CFUNC_generic_magic, internal_godot_indexed_property_id);
++internal_godot_indexed_property_id;
} else {
if (HashMap<StringName, JSValue>::ConstIterator it = methods.find(prop.setter)) {
setter = it->value;
JS_DupValue(ctx, setter);
} else if (MethodBind *mb = prop._setptr) {
if (godot_methods.size() >= internal_godot_method_id) {
godot_methods.resize(godot_methods.size() + 1);
}
godot_methods.write[internal_godot_method_id] = mb;
String setter_name = prop.setter;
setter = JS_NewCFunctionMagic(ctx, &QuickJSBinder::object_method, setter_name.utf8().get_data(), mb->get_argument_count(), JS_CFUNC_generic_magic, internal_godot_method_id);
++internal_godot_method_id;
}
if (HashMap<StringName, JSValue>::ConstIterator it = methods.find(prop.getter)) {
getter = it->value;
JS_DupValue(ctx, getter);
} else if (MethodBind *mb = prop._getptr) {
if (godot_methods.size() >= internal_godot_method_id) {
godot_methods.resize(godot_methods.size() + 1);
}
godot_methods.write[internal_godot_method_id] = mb;
String getter_name = prop.getter;
getter = JS_NewCFunctionMagic(ctx, &QuickJSBinder::object_method, getter_name.utf8().get_data(), mb->get_argument_count(), JS_CFUNC_generic_magic, internal_godot_method_id);
++internal_godot_method_id;
}
}
JSAtom atom = get_atom(ctx, prop_name);
JS_DefinePropertyGetSet(ctx, data.prototype, atom, getter, setter, PROP_DEF_DEFAULT);
JS_FreeAtom(ctx, atom);
}
}
JS_NewClassID(&data.class_id);
JS_NewClass(JS_GetRuntime(ctx), data.class_id, &data.jsclass);
JS_SetClassProto(ctx, data.class_id, data.prototype);
data.constructor = JS_NewCFunctionMagic(ctx, object_constructor, data.jsclass.class_name, data.class_name.size(), JS_CFUNC_constructor_magic, (int)data.class_id);
JS_SetConstructor(ctx, data.constructor, data.prototype);
JS_DefinePropertyValue(ctx, data.prototype, js_key_godot_classid, JS_NewInt32(ctx, data.class_id), PROP_DEF_DEFAULT);
JS_DefinePropertyValue(ctx, data.constructor, js_key_godot_classid, JS_NewInt32(ctx, data.class_id), PROP_DEF_DEFAULT);
// constants
for (const KeyValue<StringName, int64_t> &pair : p_cls->constant_map) {
JSAtom atom = get_atom(ctx, pair.key);
JS_DefinePropertyValue(ctx, data.constructor, atom, JS_NewInt64(ctx, pair.value), PROP_DEF_DEFAULT);
JS_FreeAtom(ctx, atom);
}
// enumeration
for (const KeyValue<StringName, ClassDB::ClassInfo::EnumInfo> &pair : p_cls->enum_map) {
JSValue enum_obj = JS_NewObject(ctx);
JSAtom atom = get_atom(ctx, pair.key);
const List<StringName> &const_keys = pair.value.constants;
for (const List<StringName>::Element *E = const_keys.front(); E; E = E->next()) {
int value = p_cls->constant_map.get(E->get());
JSAtom atom_key = get_atom(ctx, E->get());
JS_DefinePropertyValue(ctx, enum_obj, atom_key, JS_NewInt32(ctx, value), PROP_DEF_DEFAULT);
JS_FreeAtom(ctx, atom_key);
}
JS_DefinePropertyValue(ctx, data.constructor, atom, enum_obj, PROP_DEF_DEFAULT);
JS_FreeAtom(ctx, atom);
}
// signals
for (const KeyValue<StringName, MethodInfo> &pair : p_cls->signal_map) {
JSAtom atom = get_atom(ctx, pair.key);
JS_DefinePropertyValue(ctx, data.constructor, atom, to_js_string(ctx, pair.key), PROP_DEF_DEFAULT);
JS_FreeAtom(ctx, atom);
}
class_bindings.insert(data.class_id, data);
classname_bindings.insert(p_cls->name, class_bindings.getptr(data.class_id));
return data.class_id;
}
void QuickJSBinder::add_godot_origin() {
godot_origin_class.class_id = 0;
godot_origin_class.class_name = "GodotOrigin";
godot_origin_class.jsclass.class_name = godot_origin_class.class_name.get_data();
godot_origin_class.jsclass.finalizer = origin_finalizer;
godot_origin_class.jsclass.exotic = NULL;
godot_origin_class.jsclass.call = NULL;