e2083871eb
The API is implemented in javascript, and generates C functions that can be called from godot. This allows much cleaner code replacing all `EM_ASM` calls in our C++ code with plain C function calls. This also gets rid of few hacks and comes with few optimizations (e.g. custom cursor shapes should be much faster now).
87 lines
3.6 KiB
JavaScript
87 lines
3.6 KiB
JavaScript
/*************************************************************************/
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/* library_godot_eval.js */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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const GodotEval = {
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godot_js_eval__deps: ['$GodotOS'],
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godot_js_eval: function(p_js, p_use_global_ctx, p_union_ptr, p_byte_arr, p_byte_arr_write, p_callback) {
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const js_code = UTF8ToString(p_js);
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let eval_ret = null;
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try {
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if (p_use_global_ctx) {
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// indirect eval call grants global execution context
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const global_eval = eval;
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eval_ret = global_eval(js_code);
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} else {
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eval_ret = eval(js_code);
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}
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} catch (e) {
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err(e);
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}
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switch (typeof eval_ret) {
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case 'boolean':
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setValue(p_union_ptr, eval_ret, 'i32');
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return 1; // BOOL
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case 'number':
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setValue(p_union_ptr, eval_ret, 'double');
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return 3; // REAL
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case 'string':
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let array_ptr = GodotOS.allocString(eval_ret);
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setValue(p_union_ptr, array_ptr , '*');
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return 4; // STRING
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case 'object':
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if (eval_ret === null) {
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break;
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}
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if (ArrayBuffer.isView(eval_ret) && !(eval_ret instanceof Uint8Array)) {
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eval_ret = new Uint8Array(eval_ret.buffer);
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}
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else if (eval_ret instanceof ArrayBuffer) {
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eval_ret = new Uint8Array(eval_ret);
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}
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if (eval_ret instanceof Uint8Array) {
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const func = GodotOS.get_func(p_callback);
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const bytes_ptr = func(p_byte_arr, p_byte_arr_write, eval_ret.length);
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HEAPU8.set(eval_ret, bytes_ptr);
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return 20; // POOL_BYTE_ARRAY
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}
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break;
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}
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return 0; // NIL
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},
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}
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mergeInto(LibraryManager.library, GodotEval);
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