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Introduce Array.form(<Enumerator>) polyfills

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Introduce Array.form(<Enumerator>) polyfills
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Namhyeon Go 2025-08-05 16:39:44 +09:00 committed by GitHub
parent 3f376d29c3
commit fe74f360d9
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1 changed files with 50 additions and 43 deletions
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93
lib/std.js
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@ -3,9 +3,8 @@
// SPDX-License-Identifier: GPL-3.0-or-later
// https://github.com/gnh1201/welsonjs
//
// WelsonJS Standard Library
// WelsonJS Standard Library (Polyfills and shared functions)
//
// Polyfills
if (!Function.prototype.GetResource) {
Function.prototype.GetResource = function(ResourceName) {
if (!this.Resources) {
@ -23,50 +22,58 @@ if (!Function.prototype.GetResource) {
}
}
// The provided code snippet has been corrected by ChatGPT.
// https://chat.openai.com/share/eaab056c-d265-4ee3-b355-9f29176a9caa
// Related issues: #75 #42 #30
if (typeof Enumerator !== "undefined") {
Enumerator.prototype.toArray = function() {
var result = [];
while (!this.atEnd()) {
var currentItem = this.item();
var currentItemProperties = currentItem.Properties_;
var itemObject = {};
var propertiesEnumerator = new Enumerator(currentItemProperties);
while (!propertiesEnumerator.atEnd()) {
var property = propertiesEnumerator.item();
if (typeof property.value !== "unknown") { // The type "Unknown" is Array
itemObject[property.name] = property.value;
} else {
var arrayValues = [];
var index = 0;
while (true) {
try {
arrayValues.push(property.value(index));
index++;
} catch (e) {
break;
}
}
itemObject[property.name] = arrayValues;
}
propertiesEnumerator.moveNext();
}
result.push(itemObject);
this.moveNext();
}
return result;
};
}
// Global APIs
function GetResource(ResourceName) {
return arguments.callee.caller.GetResource(ResourceName);
}
(function() {
var originalFrom = Array.from;
function convertToArray(v) {
var result = [];
while (!v.atEnd()) {
var item = v.item();
result.push(typeof item === "unknown" ? Array.from(item) : item);
v.moveNext();
}
return result;
}
function convertToObject(v) {
var obj = {};
var props = new Enumerator(v.Properties_);
while (!props.atEnd()) {
var prop = props.item();
obj[prop.name] = typeof prop.value === "unknown" ?
Array.from(prop.value) :
prop.value;
props.moveNext();
}
return obj;
}
Array.from = function(value) {
if (value && typeof value.item === "unknown") {
value = new Enumerator(value);
}
if (value instanceof Enumerator) {
return value && value.Properties_ ?
convertToObject(value) :
convertToArray(value);
}
return originalFrom ? originalFrom(value) : Array.prototype.slice.call(value);
};
Array.from.toString = function() {
return originalFrom.toString();
};
// compatible under version 0.2.7.55
Enumerator.prototype.toArray = Array.from;
})();
// [lib/std] the time of `sleep()' function is not accuracy #34
function sleep(ms, callback) {
var handler = null;
@ -623,7 +630,7 @@ exports.alert = alert;
exports.confirm = confirm;
exports.prompt = prompt;
exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.18";
exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.19";
exports.AUTHOR = "gnh1201@catswords.re.kr";
exports.global = global;
exports.require = global.require;