59 lines
1.1 KiB
JavaScript
59 lines
1.1 KiB
JavaScript
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import RollTerm from "./term.mjs";
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/**
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* A type of RollTerm used to denote and perform an arithmetic operation.
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* @extends {RollTerm}
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*/
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export default class OperatorTerm extends RollTerm {
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constructor({operator, options}={}) {
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super({options});
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this.operator = operator;
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}
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/**
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* The term's operator value.
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* @type {string}
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*/
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operator;
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/**
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* An object of operators with their precedence values.
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* @type {Readonly<Record<string, number>>}
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*/
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static PRECEDENCE = Object.freeze({
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"+": 10,
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"-": 10,
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"*": 20,
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"/": 20,
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"%": 20
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});
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/**
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* An array of operators which represent arithmetic operations
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* @type {string[]}
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*/
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static OPERATORS = Object.keys(this.PRECEDENCE);
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/** @inheritdoc */
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static REGEXP = new RegExp(this.OPERATORS.map(o => "\\"+o).join("|"), "g");
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/** @inheritdoc */
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static SERIALIZE_ATTRIBUTES = ["operator"];
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/** @inheritdoc */
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get flavor() {
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return ""; // Operator terms cannot have flavor text
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}
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/** @inheritdoc */
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get expression() {
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return ` ${this.operator} `;
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}
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/** @inheritdoc */
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get total() {
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return ` ${this.operator} `;
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}
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}
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