138 lines
3.7 KiB
JavaScript
138 lines
3.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.createHelpClass = void 0;
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var _is = require("../utils/is.js");
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var _object = require("../utils/object.js");
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var _string = require("../utils/string.js");
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var _factory = require("../utils/factory.js");
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const name = 'Help';
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const dependencies = ['evaluate'];
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const createHelpClass = exports.createHelpClass = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
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let {
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evaluate
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} = _ref;
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/**
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* Documentation object
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* @param {Object} doc Object containing properties:
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* {string} name
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* {string} category
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* {string} description
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* {string[]} syntax
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* {string[]} examples
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* {string[]} seealso
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* @constructor
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*/
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function Help(doc) {
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if (!(this instanceof Help)) {
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throw new SyntaxError('Constructor must be called with the new operator');
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}
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if (!doc) throw new Error('Argument "doc" missing');
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this.doc = doc;
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}
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/**
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* Attach type information
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*/
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Help.prototype.type = 'Help';
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Help.prototype.isHelp = true;
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/**
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* Generate a string representation of the Help object
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* @return {string} Returns a string
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* @private
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*/
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Help.prototype.toString = function () {
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const doc = this.doc || {};
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let desc = '\n';
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if (doc.name) {
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desc += 'Name: ' + doc.name + '\n\n';
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}
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if (doc.category) {
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desc += 'Category: ' + doc.category + '\n\n';
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}
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if (doc.description) {
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desc += 'Description:\n ' + doc.description + '\n\n';
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}
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if (doc.syntax) {
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desc += 'Syntax:\n ' + doc.syntax.join('\n ') + '\n\n';
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}
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if (doc.examples) {
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desc += 'Examples:\n';
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// after evaluating the examples, we restore config in case the examples
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// did change the config.
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let configChanged = false;
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const originalConfig = evaluate('config()');
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const scope = {
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config: newConfig => {
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configChanged = true;
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return evaluate('config(newConfig)', {
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newConfig
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});
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}
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};
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for (let i = 0; i < doc.examples.length; i++) {
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const expr = doc.examples[i];
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desc += ' ' + expr + '\n';
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let res;
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try {
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// note: res can be undefined when `expr` is an empty string
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res = evaluate(expr, scope);
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} catch (e) {
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res = e;
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}
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if (res !== undefined && !(0, _is.isHelp)(res)) {
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desc += ' ' + (0, _string.format)(res, {
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precision: 14
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}) + '\n';
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}
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}
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desc += '\n';
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if (configChanged) {
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evaluate('config(originalConfig)', {
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originalConfig
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});
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}
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}
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if (doc.mayThrow && doc.mayThrow.length) {
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desc += 'Throws: ' + doc.mayThrow.join(', ') + '\n\n';
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}
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if (doc.seealso && doc.seealso.length) {
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desc += 'See also: ' + doc.seealso.join(', ') + '\n';
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}
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return desc;
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};
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/**
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* Export the help object to JSON
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*/
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Help.prototype.toJSON = function () {
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const obj = (0, _object.clone)(this.doc);
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obj.mathjs = 'Help';
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return obj;
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};
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/**
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* Instantiate a Help object from a JSON object
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* @param {Object} json
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* @returns {Help} Returns a new Help object
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*/
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Help.fromJSON = function (json) {
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const doc = {};
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Object.keys(json).filter(prop => prop !== 'mathjs').forEach(prop => {
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doc[prop] = json[prop];
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});
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return new Help(doc);
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};
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/**
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* Returns a string representation of the Help object
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*/
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Help.prototype.valueOf = Help.prototype.toString;
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return Help;
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}, {
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isClass: true
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}); |