346 lines
11 KiB
JavaScript
346 lines
11 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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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 GodotJSWrapper = {
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$GodotJSWrapper__deps: ['$GodotRuntime', '$IDHandler'],
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$GodotJSWrapper__postset: 'GodotJSWrapper.proxies = new Map();',
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$GodotJSWrapper: {
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proxies: null,
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cb_ret: null,
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MyProxy: function (val) {
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const id = IDHandler.add(this);
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GodotJSWrapper.proxies.set(val, id);
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let refs = 1;
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this.ref = function () {
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refs++;
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};
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this.unref = function () {
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refs--;
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if (refs === 0) {
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IDHandler.remove(id);
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GodotJSWrapper.proxies.delete(val);
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}
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};
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this.get_val = function () {
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return val;
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};
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this.get_id = function () {
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return id;
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};
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},
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get_proxied: function (val) {
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const id = GodotJSWrapper.proxies.get(val);
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if (id === undefined) {
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const proxy = new GodotJSWrapper.MyProxy(val);
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return proxy.get_id();
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}
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IDHandler.get(id).ref();
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return id;
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},
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get_proxied_value: function (id) {
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const proxy = IDHandler.get(id);
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if (proxy === undefined) {
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return undefined;
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}
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return proxy.get_val();
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},
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variant2js: function (type, val) {
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switch (type) {
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case 0:
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return null;
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case 1:
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return !!GodotRuntime.getHeapValue(val, 'i64');
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case 2:
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return GodotRuntime.getHeapValue(val, 'i64');
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case 3:
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return GodotRuntime.getHeapValue(val, 'double');
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case 4:
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return GodotRuntime.parseString(GodotRuntime.getHeapValue(val, '*'));
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case 24: // OBJECT
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return GodotJSWrapper.get_proxied_value(GodotRuntime.getHeapValue(val, 'i64'));
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default:
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return undefined;
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}
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},
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js2variant: function (p_val, p_exchange) {
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if (p_val === undefined || p_val === null) {
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return 0; // NIL
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}
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const type = typeof (p_val);
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if (type === 'boolean') {
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GodotRuntime.setHeapValue(p_exchange, p_val, 'i64');
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return 1; // BOOL
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} else if (type === 'number') {
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if (Number.isInteger(p_val)) {
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GodotRuntime.setHeapValue(p_exchange, p_val, 'i64');
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return 2; // INT
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}
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GodotRuntime.setHeapValue(p_exchange, p_val, 'double');
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return 3; // REAL
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} else if (type === 'string') {
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const c_str = GodotRuntime.allocString(p_val);
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GodotRuntime.setHeapValue(p_exchange, c_str, '*');
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return 4; // STRING
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}
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const id = GodotJSWrapper.get_proxied(p_val);
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GodotRuntime.setHeapValue(p_exchange, id, 'i64');
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return 24; // OBJECT
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},
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},
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godot_js_wrapper_interface_get__sig: 'ii',
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godot_js_wrapper_interface_get: function (p_name) {
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const name = GodotRuntime.parseString(p_name);
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if (typeof (window[name]) !== 'undefined') {
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return GodotJSWrapper.get_proxied(window[name]);
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}
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return 0;
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},
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godot_js_wrapper_object_get__sig: 'iiii',
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godot_js_wrapper_object_get: function (p_id, p_exchange, p_prop) {
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const obj = GodotJSWrapper.get_proxied_value(p_id);
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if (obj === undefined) {
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return 0;
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}
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if (p_prop) {
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const prop = GodotRuntime.parseString(p_prop);
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try {
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return GodotJSWrapper.js2variant(obj[prop], p_exchange);
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} catch (e) {
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GodotRuntime.error(`Error getting variable ${prop} on object`, obj);
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return 0; // NIL
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}
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}
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return GodotJSWrapper.js2variant(obj, p_exchange);
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},
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godot_js_wrapper_object_set__sig: 'viiii',
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godot_js_wrapper_object_set: function (p_id, p_name, p_type, p_exchange) {
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const obj = GodotJSWrapper.get_proxied_value(p_id);
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if (obj === undefined) {
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return;
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}
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const name = GodotRuntime.parseString(p_name);
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try {
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obj[name] = GodotJSWrapper.variant2js(p_type, p_exchange);
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} catch (e) {
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GodotRuntime.error(`Error setting variable ${name} on object`, obj);
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}
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},
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godot_js_wrapper_object_call__sig: 'iiiiiiiii',
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godot_js_wrapper_object_call: function (p_id, p_method, p_args, p_argc, p_convert_callback, p_exchange, p_lock, p_free_lock_callback) {
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const obj = GodotJSWrapper.get_proxied_value(p_id);
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if (obj === undefined) {
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return -1;
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}
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const method = GodotRuntime.parseString(p_method);
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const convert = GodotRuntime.get_func(p_convert_callback);
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const freeLock = GodotRuntime.get_func(p_free_lock_callback);
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const args = new Array(p_argc);
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for (let i = 0; i < p_argc; i++) {
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const type = convert(p_args, i, p_exchange, p_lock);
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const lock = GodotRuntime.getHeapValue(p_lock, '*');
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args[i] = GodotJSWrapper.variant2js(type, p_exchange);
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if (lock) {
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freeLock(p_lock, type);
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}
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}
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try {
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const res = obj[method](...args);
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return GodotJSWrapper.js2variant(res, p_exchange);
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} catch (e) {
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GodotRuntime.error(`Error calling method ${method} on:`, obj, 'error:', e);
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return -1;
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}
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},
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godot_js_wrapper_object_unref__sig: 'vi',
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godot_js_wrapper_object_unref: function (p_id) {
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const proxy = IDHandler.get(p_id);
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if (proxy !== undefined) {
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proxy.unref();
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}
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},
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godot_js_wrapper_create_cb__sig: 'iii',
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godot_js_wrapper_create_cb: function (p_ref, p_func) {
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const func = GodotRuntime.get_func(p_func);
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let id = 0;
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const cb = function () {
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if (!GodotJSWrapper.get_proxied_value(id)) {
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return undefined;
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}
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// The callback will store the returned value in this variable via
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// "godot_js_wrapper_object_set_cb_ret" upon calling the user function.
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// This is safe! JavaScript is single threaded (and using it in threads is not a good idea anyway).
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GodotJSWrapper.cb_ret = null;
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const args = Array.from(arguments);
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func(p_ref, GodotJSWrapper.get_proxied(args), args.length);
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const ret = GodotJSWrapper.cb_ret;
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GodotJSWrapper.cb_ret = null;
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return ret;
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};
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id = GodotJSWrapper.get_proxied(cb);
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return id;
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},
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godot_js_wrapper_object_set_cb_ret__sig: 'vii',
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godot_js_wrapper_object_set_cb_ret: function (p_val_type, p_val_ex) {
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GodotJSWrapper.cb_ret = GodotJSWrapper.variant2js(p_val_type, p_val_ex);
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},
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godot_js_wrapper_object_getvar__sig: 'iiii',
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godot_js_wrapper_object_getvar: function (p_id, p_type, p_exchange) {
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const obj = GodotJSWrapper.get_proxied_value(p_id);
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if (obj === undefined) {
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return -1;
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}
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const prop = GodotJSWrapper.variant2js(p_type, p_exchange);
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if (prop === undefined || prop === null) {
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return -1;
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}
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try {
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return GodotJSWrapper.js2variant(obj[prop], p_exchange);
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} catch (e) {
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GodotRuntime.error(`Error getting variable ${prop} on object`, obj, e);
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return -1;
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}
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},
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godot_js_wrapper_object_setvar__sig: 'iiiiii',
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godot_js_wrapper_object_setvar: function (p_id, p_key_type, p_key_ex, p_val_type, p_val_ex) {
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const obj = GodotJSWrapper.get_proxied_value(p_id);
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if (obj === undefined) {
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return -1;
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}
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const key = GodotJSWrapper.variant2js(p_key_type, p_key_ex);
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try {
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obj[key] = GodotJSWrapper.variant2js(p_val_type, p_val_ex);
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return 0;
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} catch (e) {
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GodotRuntime.error(`Error setting variable ${key} on object`, obj);
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return -1;
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}
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},
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godot_js_wrapper_create_object__sig: 'iiiiiiii',
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godot_js_wrapper_create_object: function (p_object, p_args, p_argc, p_convert_callback, p_exchange, p_lock, p_free_lock_callback) {
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const name = GodotRuntime.parseString(p_object);
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if (typeof (window[name]) === 'undefined') {
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return -1;
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}
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const convert = GodotRuntime.get_func(p_convert_callback);
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const freeLock = GodotRuntime.get_func(p_free_lock_callback);
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const args = new Array(p_argc);
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for (let i = 0; i < p_argc; i++) {
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const type = convert(p_args, i, p_exchange, p_lock);
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const lock = GodotRuntime.getHeapValue(p_lock, '*');
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args[i] = GodotJSWrapper.variant2js(type, p_exchange);
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if (lock) {
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freeLock(p_lock, type);
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}
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}
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try {
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const res = new window[name](...args);
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return GodotJSWrapper.js2variant(res, p_exchange);
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} catch (e) {
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GodotRuntime.error(`Error calling constructor ${name} with args:`, args, 'error:', e);
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return -1;
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}
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},
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};
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autoAddDeps(GodotJSWrapper, '$GodotJSWrapper');
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mergeInto(LibraryManager.library, GodotJSWrapper);
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const GodotEval = {
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godot_js_eval__deps: ['$GodotRuntime'],
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godot_js_eval__sig: 'iiiiiii',
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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 = GodotRuntime.parseString(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; // eslint-disable-line no-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); // eslint-disable-line no-eval
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}
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} catch (e) {
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GodotRuntime.error(e);
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}
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switch (typeof eval_ret) {
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case 'boolean':
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GodotRuntime.setHeapValue(p_union_ptr, eval_ret, 'i32');
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return 1; // BOOL
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case 'number':
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GodotRuntime.setHeapValue(p_union_ptr, eval_ret, 'double');
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return 3; // REAL
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case 'string':
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GodotRuntime.setHeapValue(p_union_ptr, GodotRuntime.allocString(eval_ret), '*');
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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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} 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 = GodotRuntime.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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// no default
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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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