mathjs
Version:
Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif
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JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.createArrayNode = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));
var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));
var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _is = require("../../utils/is.js");
var _array = require("../../utils/array.js");
var _factory = require("../../utils/factory.js");
function _callSuper(t, o, e) { return o = (0, _getPrototypeOf2["default"])(o), (0, _possibleConstructorReturn2["default"])(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], (0, _getPrototypeOf2["default"])(t).constructor) : o.apply(t, e)); }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
var name = 'ArrayNode';
var dependencies = ['Node'];
var createArrayNode = exports.createArrayNode = /* #__PURE__ */(0, _factory.factory)(name, dependencies, function (_ref) {
var Node = _ref.Node;
var ArrayNode = /*#__PURE__*/function (_Node) {
(0, _inherits2["default"])(ArrayNode, _Node);
/**
* @constructor ArrayNode
* @extends {Node}
* Holds an 1-dimensional array with items
* @param {Node[]} [items] 1 dimensional array with items
*/
function ArrayNode(items) {
var _this;
(0, _classCallCheck2["default"])(this, ArrayNode);
_this = _callSuper(this, ArrayNode);
_this.items = items || [];
// validate input
if (!Array.isArray(_this.items) || !_this.items.every(_is.isNode)) {
throw new TypeError('Array containing Nodes expected');
}
return _this;
}
(0, _createClass2["default"])(ArrayNode, [{
key: "type",
get: function get() {
return name;
}
}, {
key: "isArrayNode",
get: function get() {
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: *)
*/
}, {
key: "_compile",
value: function _compile(math, argNames) {
var evalItems = (0, _array.map)(this.items, function (item) {
return item._compile(math, argNames);
});
var asMatrix = math.config.matrix !== 'Array';
if (asMatrix) {
var matrix = math.matrix;
return function evalArrayNode(scope, args, context) {
return matrix((0, _array.map)(evalItems, function (evalItem) {
return evalItem(scope, args, context);
}));
};
} else {
return function evalArrayNode(scope, args, context) {
return (0, _array.map)(evalItems, function (evalItem) {
return evalItem(scope, args, context);
});
};
}
}
/**
* Execute a callback for each of the child nodes of this node
* @param {function(child: Node, path: string, parent: Node)} callback
*/
}, {
key: "forEach",
value: function forEach(callback) {
for (var i = 0; i < this.items.length; i++) {
var node = this.items[i];
callback(node, 'items[' + i + ']', this);
}
}
/**
* Create a new ArrayNode 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 {ArrayNode} Returns a transformed copy of the node
*/
}, {
key: "map",
value: function map(callback) {
var items = [];
for (var i = 0; i < this.items.length; i++) {
items[i] = this._ifNode(callback(this.items[i], 'items[' + i + ']', this));
}
return new ArrayNode(items);
}
/**
* Create a clone of this node, a shallow copy
* @return {ArrayNode}
*/
}, {
key: "clone",
value: function clone() {
return new ArrayNode(this.items.slice(0));
}
/**
* Get string representation
* @param {Object} options
* @return {string} str
* @override
*/
}, {
key: "_toString",
value: function _toString(options) {
var items = this.items.map(function (node) {
return node.toString(options);
});
return '[' + items.join(', ') + ']';
}
/**
* Get a JSON representation of the node
* @returns {Object}
*/
}, {
key: "toJSON",
value: function toJSON() {
return {
mathjs: name,
items: this.items
};
}
/**
* Instantiate an ArrayNode from its JSON representation
* @param {Object} json An object structured like
* `{"mathjs": "ArrayNode", items: [...]}`,
* where mathjs is optional
* @returns {ArrayNode}
*/
}, {
key: "_toHTML",
value:
/**
* Get HTML representation
* @param {Object} options
* @return {string} str
* @override
*/
function _toHTML(options) {
var items = this.items.map(function (node) {
return node.toHTML(options);
});
return '<span class="math-parenthesis math-square-parenthesis">[</span>' + items.join('<span class="math-separator">,</span>') + '<span class="math-parenthesis math-square-parenthesis">]</span>';
}
/**
* Get LaTeX representation
* @param {Object} options
* @return {string} str
*/
}, {
key: "_toTex",
value: function _toTex(options) {
function itemsToTex(items, nested) {
var mixedItems = items.some(_is.isArrayNode) && !items.every(_is.isArrayNode);
var itemsFormRow = nested || mixedItems;
var itemSep = itemsFormRow ? '&' : '\\\\';
var itemsTex = items.map(function (node) {
if (node.items) {
return itemsToTex(node.items, !nested);
} else {
return node.toTex(options);
}
}).join(itemSep);
return mixedItems || !itemsFormRow || itemsFormRow && !nested ? '\\begin{bmatrix}' + itemsTex + '\\end{bmatrix}' : itemsTex;
}
return itemsToTex(this.items, false);
}
}], [{
key: "fromJSON",
value: function fromJSON(json) {
return new ArrayNode(json.items);
}
}]);
return ArrayNode;
}(Node);
(0, _defineProperty2["default"])(ArrayNode, "name", name);
return ArrayNode;
}, {
isClass: true,
isNode: true
});