import _defineProperty from "@babel/runtime/helpers/defineProperty";
import { isNode, isSymbolNode } from '../../utils/is.js';
import { factory } from '../../utils/factory.js';
import { getPrecedence } from '../operators.js';
var name = 'RangeNode';
var dependencies = ['Node'];
export var createRangeNode = /* #__PURE__ */factory(name, dependencies, _ref => {
var {
Node
} = _ref;
/**
* Calculate the necessary parentheses
* @param {Node} node
* @param {string} parenthesis
* @param {string} implicit
* @return {Object} parentheses
* @private
*/
function calculateNecessaryParentheses(node, parenthesis, implicit) {
var precedence = getPrecedence(node, parenthesis, implicit);
var parens = {};
var startPrecedence = getPrecedence(node.start, parenthesis, implicit);
parens.start = startPrecedence !== null && startPrecedence <= precedence || parenthesis === 'all';
if (node.step) {
var stepPrecedence = getPrecedence(node.step, parenthesis, implicit);
parens.step = stepPrecedence !== null && stepPrecedence <= precedence || parenthesis === 'all';
}
var endPrecedence = getPrecedence(node.end, parenthesis, implicit);
parens.end = endPrecedence !== null && endPrecedence <= precedence || parenthesis === 'all';
return parens;
}
class RangeNode extends Node {
/**
* @constructor RangeNode
* @extends {Node}
* create a range
* @param {Node} start included lower-bound
* @param {Node} end included upper-bound
* @param {Node} [step] optional step
*/
constructor(start, end, step) {
super();
// validate inputs
if (!isNode(start)) throw new TypeError('Node expected');
if (!isNode(end)) throw new TypeError('Node expected');
if (step && !isNode(step)) throw new TypeError('Node expected');
if (arguments.length > 3) throw new Error('Too many arguments');
this.start = start; // included lower-bound
this.end = end; // included upper-bound
this.step = step || null; // optional step
}
get type() {
return name;
}
get isRangeNode() {
return true;
}
/**
* Check whether the RangeNode needs the `end` symbol to be defined.
* This end is the size of the Matrix in current dimension.
* @return {boolean}
*/
needsEnd() {
// find all `end` symbols in this RangeNode
var endSymbols = this.filter(function (node) {
return isSymbolNode(node) && node.name === 'end';
});
return endSymbols.length > 0;
}
/**
* 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) {
var range = math.range;
var evalStart = this.start._compile(math, argNames);
var evalEnd = this.end._compile(math, argNames);
if (this.step) {
var evalStep = this.step._compile(math, argNames);
return function evalRangeNode(scope, args, context) {
return range(evalStart(scope, args, context), evalEnd(scope, args, context), evalStep(scope, args, context));
};
} else {
return function evalRangeNode(scope, args, context) {
return range(evalStart(scope, args, context), evalEnd(scope, args, context));
};
}
}
/**
* Execute a callback for each of the child nodes of this node
* @param {function(child: Node, path: string, parent: Node)} callback
*/
forEach(callback) {
callback(this.start, 'start', this);
callback(this.end, 'end', this);
if (this.step) {
callback(this.step, 'step', this);
}
}
/**
* Create a new RangeNode 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 {RangeNode} Returns a transformed copy of the node
*/
map(callback) {
return new RangeNode(this._ifNode(callback(this.start, 'start', this)), this._ifNode(callback(this.end, 'end', this)), this.step && this._ifNode(callback(this.step, 'step', this)));
}
/**
* Create a clone of this node, a shallow copy
* @return {RangeNode}
*/
clone() {
return new RangeNode(this.start, this.end, this.step && this.step);
}
/**
* Get string representation
* @param {Object} options
* @return {string} str
*/
_toString(options) {
var parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
var parens = calculateNecessaryParentheses(this, parenthesis, options && options.implicit);
// format string as start:step:stop
var str;
var start = this.start.toString(options);
if (parens.start) {
start = '(' + start + ')';
}
str = start;
if (this.step) {
var step = this.step.toString(options);
if (parens.step) {
step = '(' + step + ')';
}
str += ':' + step;
}
var end = this.end.toString(options);
if (parens.end) {
end = '(' + end + ')';
}
str += ':' + end;
return str;
}
/**
* Get a JSON representation of the node
* @returns {Object}
*/
toJSON() {
return {
mathjs: name,
start: this.start,
end: this.end,
step: this.step
};
}
/**
* Instantiate an RangeNode from its JSON representation
* @param {Object} json
* An object structured like
* `{"mathjs": "RangeNode", "start": ..., "end": ..., "step": ...}`,
* where mathjs is optional
* @returns {RangeNode}
*/
static fromJSON(json) {
return new RangeNode(json.start, json.end, json.step);
}
/**
* Get HTML representation
* @param {Object} options
* @return {string} str
*/
_toHTML(options) {
var parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
var parens = calculateNecessaryParentheses(this, parenthesis, options && options.implicit);
// format string as start:step:stop
var str;
var start = this.start.toHTML(options);
if (parens.start) {
start = '<span class="math-parenthesis math-round-parenthesis">(</span>' + start + '<span class="math-parenthesis math-round-parenthesis">)</span>';
}
str = start;
if (this.step) {
var step = this.step.toHTML(options);
if (parens.step) {
step = '<span class="math-parenthesis math-round-parenthesis">(</span>' + step + '<span class="math-parenthesis math-round-parenthesis">)</span>';
}
str += '<span class="math-operator math-range-operator">:</span>' + step;
}
var end = this.end.toHTML(options);
if (parens.end) {
end = '<span class="math-parenthesis math-round-parenthesis">(</span>' + end + '<span class="math-parenthesis math-round-parenthesis">)</span>';
}
str += '<span class="math-operator math-range-operator">:</span>' + end;
return str;
}
/**
* Get LaTeX representation
* @params {Object} options
* @return {string} str
*/
_toTex(options) {
var parenthesis = options && options.parenthesis ? options.parenthesis : 'keep';
var parens = calculateNecessaryParentheses(this, parenthesis, options && options.implicit);
var str = this.start.toTex(options);
if (parens.start) {
str = "\\left(".concat(str, "\\right)");
}
if (this.step) {
var step = this.step.toTex(options);
if (parens.step) {
step = "\\left(".concat(step, "\\right)");
}
str += ':' + step;
}
var end = this.end.toTex(options);
if (parens.end) {
end = "\\left(".concat(end, "\\right)");
}
str += ':' + end;
return str;
}
}
_defineProperty(RangeNode, "name", name);
return RangeNode;
}, {
isClass: true,
isNode: true
});