feat:node-modules

node_modules/mathjs/lib/cjs/expression/node/RelationalNode.js

@@ -0,0 +1,205 @@
+"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
+});