"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.createRelationalNode = void 0;
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _operators = require("../operators.js");
var _string = require("../../utils/string.js");
var _customs = require("../../utils/customs.js");
var _latex = require("../../utils/latex.js");
var _factory = require("../../utils/factory.js");
const name = 'RelationalNode';
const dependencies = ['Node'];
const createRelationalNode = exports.createRelationalNode = /* #__PURE__ */(0, _factory.factory)(name, dependencies, _ref => {
let {
Node
} = _ref;
const operatorMap = {
equal: '==',
unequal: '!=',
smaller: '<',
larger: '>',
smallerEq: '<=',
largerEq: '>='
};
class RelationalNode extends Node {
/**
* A node representing a chained conditional expression, such as 'x > y > z'
*
* @param {String[]} conditionals
* An array of conditional operators used to compare the parameters
* @param {Node[]} params
* The parameters that will be compared
*
* @constructor RelationalNode
* @extends {Node}
*/
constructor(conditionals, params) {
super();
if (!Array.isArray(conditionals)) {
throw new TypeError('Parameter conditionals must be an array');
}
if (!Array.isArray(params)) {
throw new TypeError('Parameter params must be an array');
}
if (conditionals.length !== params.length - 1) {
throw new TypeError('Parameter params must contain exactly one more element ' + 'than parameter conditionals');
}
this.conditionals = conditionals;
this.params = params;
}
get type() {
return name;
}
get isRelationalNode() {
return true;
}
/**
* Compile a node into a JavaScript function.
* This basically pre-calculates as much as possible and only leaves open
* calculations which depend on a dynamic scope with variables.
* @param {Object} math Math.js namespace with functions and constants.
* @param {Object} argNames An object with argument names as key and `true`
* as value. Used in the SymbolNode to optimize
* for arguments from user assigned functions
* (see FunctionAssignmentNode) or special symbols
* like `end` (see IndexNode).
* @return {function} Returns a function which can be called like:
* evalNode(scope: Object, args: Object, context: *)
*/
_compile(math, argNames) {
const self = this;
const compiled = this.params.map(p => p._compile(math, argNames));
return function evalRelationalNode(scope, args, context) {
let evalLhs;
let evalRhs = compiled[0](scope, args, context);
for (let i = 0; i < self.conditionals.length; i++) {
evalLhs = evalRhs;
evalRhs = compiled[i + 1](scope, args, context);
const condFn = (0, _customs.getSafeProperty)(math, self.conditionals[i]);
if (!condFn(evalLhs, evalRhs)) {
return false;
}
}
return true;
};
}
/**
* Execute a callback for each of the child nodes of this node
* @param {function(child: Node, path: string, parent: Node)} callback
*/
forEach(callback) {
this.params.forEach((n, i) => callback(n, 'params[' + i + ']', this), this);
}
/**
* Create a new RelationalNode whose children are the results of calling
* the provided callback function for each child of the original node.
* @param {function(child: Node, path: string, parent: Node): Node} callback
* @returns {RelationalNode} Returns a transformed copy of the node
*/
map(callback) {
return new RelationalNode(this.conditionals.slice(), this.params.map((n, i) => this._ifNode(callback(n, 'params[' + i + ']', this)), this));
}
/**
* Create a clone of this node, a shallow copy
* @return {RelationalNode}
*/
clone() {
return new RelationalNode(this.conditionals, this.params);
}
/**
* Get string representation.
* @param {Object} options
* @return {string} str
*/
_toString(options) {
const parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
const precedence = (0, _operators.getPrecedence)(this, parenthesis, options && options.implicit);
const paramStrings = this.params.map(function (p, index) {
const paramPrecedence = (0, _operators.getPrecedence)(p, parenthesis, options && options.implicit);
return parenthesis === 'all' || paramPrecedence !== null && paramPrecedence <= precedence ? '(' + p.toString(options) + ')' : p.toString(options);
});
let ret = paramStrings[0];
for (let i = 0; i < this.conditionals.length; i++) {
ret += ' ' + operatorMap[this.conditionals[i]];
ret += ' ' + paramStrings[i + 1];
}
return ret;
}
/**
* Get a JSON representation of the node
* @returns {Object}
*/
toJSON() {
return {
mathjs: name,
conditionals: this.conditionals,
params: this.params
};
}
/**
* Instantiate a RelationalNode from its JSON representation
* @param {Object} json
* An object structured like
* `{"mathjs": "RelationalNode", "conditionals": ..., "params": ...}`,
* where mathjs is optional
* @returns {RelationalNode}
*/
static fromJSON(json) {
return new RelationalNode(json.conditionals, json.params);
}
/**
* Get HTML representation
* @param {Object} options
* @return {string} str
*/
_toHTML(options) {
const parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
const precedence = (0, _operators.getPrecedence)(this, parenthesis, options && options.implicit);
const paramStrings = this.params.map(function (p, index) {
const paramPrecedence = (0, _operators.getPrecedence)(p, parenthesis, options && options.implicit);
return parenthesis === 'all' || paramPrecedence !== null && paramPrecedence <= precedence ? '<span class="math-parenthesis math-round-parenthesis">(</span>' + p.toHTML(options) + '<span class="math-parenthesis math-round-parenthesis">)</span>' : p.toHTML(options);
});
let ret = paramStrings[0];
for (let i = 0; i < this.conditionals.length; i++) {
ret += '<span class="math-operator math-binary-operator ' + 'math-explicit-binary-operator">' + (0, _string.escape)(operatorMap[this.conditionals[i]]) + '</span>' + paramStrings[i + 1];
}
return ret;
}
/**
* Get LaTeX representation
* @param {Object} options
* @return {string} str
*/
_toTex(options) {
const parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
const precedence = (0, _operators.getPrecedence)(this, parenthesis, options && options.implicit);
const paramStrings = this.params.map(function (p, index) {
const paramPrecedence = (0, _operators.getPrecedence)(p, parenthesis, options && options.implicit);
return parenthesis === 'all' || paramPrecedence !== null && paramPrecedence <= precedence ? '\\left(' + p.toTex(options) + '\right)' : p.toTex(options);
});
let ret = paramStrings[0];
for (let i = 0; i < this.conditionals.length; i++) {
ret += _latex.latexOperators[this.conditionals[i]] + paramStrings[i + 1];
}
return ret;
}
}
(0, _defineProperty2.default)(RelationalNode, "name", name);
return RelationalNode;
}, {
isClass: true,
isNode: true
});