82 lines
3.6 KiB
C++
82 lines
3.6 KiB
C++
/*************************************************************************/
|
|
/* javascript_eval.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. */
|
|
/*************************************************************************/
|
|
|
|
#ifdef JAVASCRIPT_EVAL_ENABLED
|
|
|
|
#include "api/javascript_eval.h"
|
|
#include "emscripten.h"
|
|
|
|
extern "C" {
|
|
union js_eval_ret {
|
|
uint32_t b;
|
|
double d;
|
|
char *s;
|
|
};
|
|
|
|
extern int godot_js_eval(const char *p_js, int p_use_global_ctx, union js_eval_ret *p_union_ptr, void *p_byte_arr, void *p_byte_arr_write, void *(*p_callback)(void *p_ptr, void *p_ptr2, int p_len));
|
|
}
|
|
|
|
void *resize_poolbytearray_and_open_write(void *p_arr, void *r_write, int p_len) {
|
|
|
|
PoolByteArray *arr = (PoolByteArray *)p_arr;
|
|
PoolByteArray::Write *write = (PoolByteArray::Write *)r_write;
|
|
arr->resize(p_len);
|
|
*write = arr->write();
|
|
return write->ptr();
|
|
}
|
|
|
|
Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
|
|
|
|
PoolByteArray arr;
|
|
PoolByteArray::Write arr_write;
|
|
union js_eval_ret js_data;
|
|
memset(&js_data, 0, sizeof(js_data));
|
|
Variant::Type return_type = static_cast<Variant::Type>(godot_js_eval(p_code.utf8().get_data(), p_use_global_exec_context, &js_data, &arr, &arr_write, resize_poolbytearray_and_open_write));
|
|
|
|
switch (return_type) {
|
|
case Variant::BOOL:
|
|
return js_data.b == 1;
|
|
case Variant::REAL:
|
|
return js_data.d;
|
|
case Variant::STRING: {
|
|
String str = String::utf8(js_data.s);
|
|
free(js_data.s); // Must free the string allocated in JS.
|
|
return str;
|
|
}
|
|
case Variant::POOL_BYTE_ARRAY:
|
|
arr_write = PoolByteArray::Write();
|
|
return arr;
|
|
default:
|
|
return Variant();
|
|
}
|
|
}
|
|
|
|
#endif // JAVASCRIPT_EVAL_ENABLED
|