monaco-editor
Version:
A browser based code editor
84 lines (81 loc) • 2.71 kB
JavaScript
import { getClassName } from '../debugName.js';
import '../debugLocation.js';
import '../../arrays.js';
import '../../event.js';
import '../../lifecycle.js';
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
function formatValue(value, availableLen) {
switch (typeof value) {
case 'number':
return '' + value;
case 'string':
if (value.length + 2 <= availableLen) {
return `"${value}"`;
}
return `"${value.substr(0, availableLen - 7)}"+...`;
case 'boolean':
return value ? 'true' : 'false';
case 'undefined':
return 'undefined';
case 'object':
if (value === null) {
return 'null';
}
if (Array.isArray(value)) {
return formatArray(value, availableLen);
}
return formatObject(value, availableLen);
case 'symbol':
return value.toString();
case 'function':
return `[[Function${value.name ? ' ' + value.name : ''}]]`;
default:
return '' + value;
}
}
function formatArray(value, availableLen) {
let result = '[ ';
let first = true;
for (const val of value) {
if (!first) {
result += ', ';
}
if (result.length - 5 > availableLen) {
result += '...';
break;
}
first = false;
result += `${formatValue(val, availableLen - result.length)}`;
}
result += ' ]';
return result;
}
function formatObject(value, availableLen) {
if (typeof value.toString === 'function' && value.toString !== Object.prototype.toString) {
const val = value.toString();
if (val.length <= availableLen) {
return val;
}
return val.substring(0, availableLen - 3) + '...';
}
const className = getClassName(value);
let result = className ? className + '(' : '{ ';
let first = true;
for (const [key, val] of Object.entries(value)) {
if (!first) {
result += ', ';
}
if (result.length - 5 > availableLen) {
result += '...';
break;
}
first = false;
result += `${key}: ${formatValue(val, availableLen - result.length)}`;
}
result += className ? ')' : ' }';
return result;
}
export { formatValue };