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// Throwable.js |
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"use strict"; |
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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* Copyright (C) EgaLabs, Inc - All Rights Reserved * |
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* Unauthorized copying of this file, either completely or partially, via any medium, is strictly prohibited. * |
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* Proprietary and confidential. * |
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* Written by Esaú García Sánchez-Torija <[email protected]>, March 2017 * |
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
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// :: BASIC SETUP |
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// empty 'class' |
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const Throwable = function (name, message, code) { |
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// call the 'parent class' |
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Object.call(this); |
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// check parameter 'name' |
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if (name != null) { |
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if (typeof name !== "string") { |
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throw new Error("parameter 'name' must be a 'string'"); |
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} |
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this.name = name; |
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} |
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// check parameter 'message' |
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if (message != null) { |
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if (typeof message != "string") { |
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throw new Error("parameter 'message' must be a 'string'"); |
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} |
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this.message = message; |
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} |
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// check parameter 'code' |
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if (code != null) { |
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if (typeof code != "number") { |
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throw new Error("parameter 'code' must be a 'number'"); |
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} |
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this.code = code; |
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} |
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}; |
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// :: INHERITANCE |
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// set the prototype chain parent to 'Object' |
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Throwable.prototype = Object.create(Object.prototype); |
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// set the prototype chain constructor |
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Throwable.prototype.constructor = Throwable; |
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// :: PROTOTYPE |
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// set the default name |
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Throwable.prototype.name = null; |
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// set the default message |
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Throwable.prototype.message = null; |
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// set the default code |
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Throwable.prototype.code = null; |
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// set the toString method |
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Throwable.prototype.toString = function () { |
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let str = (this.name != null ? this.name : "Throwable"); |
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if (this.code != null) { |
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str += " (0x" + this.code.toString(16) + ")"; |
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} |
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str += ": " + (this.message != null ? this.message : "thrown") + "."; |
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return str; |
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}; |
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// returns a native 'Error' |
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Throwable.prototype.native = function () { |
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let str = (this.name != null ? this.name : "Throwable"); |
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if (this.code != null) { |
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str += " (0x" + this.code.toString(16) + ")"; |
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} |
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str += ": " + (this.message != null ? this.message : "thrown"); |
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return new Error(str); |
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}; |
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// :: EXPORT |
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// export the Throwable 'class' |
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module.exports = Throwable; |
EgaLabs /
node-ejsception
