feat:node-modules

node_modules/mathjs/lib/esm/expression/node/ConstantNode.js

@@ -0,0 +1,179 @@
+import _defineProperty from "@babel/runtime/helpers/defineProperty";
+import { format } from '../../utils/string.js';
+import { typeOf } from '../../utils/is.js';
+import { escapeLatex } from '../../utils/latex.js';
+import { factory } from '../../utils/factory.js';
+var name = 'ConstantNode';
+var dependencies = ['Node'];
+export var createConstantNode = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    Node
+  } = _ref;
+  class ConstantNode extends Node {
+    /**
+     * A ConstantNode holds a constant value like a number or string.
+     *
+     * Usage:
+     *
+     *     new ConstantNode(2.3)
+     *     new ConstantNode('hello')
+     *
+     * @param {*} value    Value can be any type (number, BigNumber, bigint, string, ...)
+     * @constructor ConstantNode
+     * @extends {Node}
+     */
+    constructor(value) {
+      super();
+      this.value = value;
+    }
+    get type() {
+      return name;
+    }
+    get isConstantNode() {
+      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) {
+      var value = this.value;
+      return function evalConstantNode() {
+        return value;
+      };
+    }
+
+    /**
+     * Execute a callback for each of the child nodes of this node
+     * @param {function(child: Node, path: string, parent: Node)} callback
+     */
+    forEach(callback) {
+      // nothing to do, we don't have any children
+    }
+
+    /**
+     * Create a new ConstantNode with children produced by the given callback.
+     * Trivial because there are no children.
+     * @param {function(child: Node, path: string, parent: Node) : Node} callback
+     * @returns {ConstantNode} Returns a clone of the node
+     */
+    map(callback) {
+      return this.clone();
+    }
+
+    /**
+     * Create a clone of this node, a shallow copy
+     * @return {ConstantNode}
+     */
+    clone() {
+      return new ConstantNode(this.value);
+    }
+
+    /**
+     * Get string representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toString(options) {
+      return format(this.value, options);
+    }
+
+    /**
+     * Get HTML representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toHTML(options) {
+      var value = this._toString(options);
+      switch (typeOf(this.value)) {
+        case 'number':
+        case 'bigint':
+        case 'BigNumber':
+        case 'Fraction':
+          return '<span class="math-number">' + value + '</span>';
+        case 'string':
+          return '<span class="math-string">' + value + '</span>';
+        case 'boolean':
+          return '<span class="math-boolean">' + value + '</span>';
+        case 'null':
+          return '<span class="math-null-symbol">' + value + '</span>';
+        case 'undefined':
+          return '<span class="math-undefined">' + value + '</span>';
+        default:
+          return '<span class="math-symbol">' + value + '</span>';
+      }
+    }
+
+    /**
+     * Get a JSON representation of the node
+     * @returns {Object}
+     */
+    toJSON() {
+      return {
+        mathjs: name,
+        value: this.value
+      };
+    }
+
+    /**
+     * Instantiate a ConstantNode from its JSON representation
+     * @param {Object} json  An object structured like
+     *                       `{"mathjs": "SymbolNode", value: 2.3}`,
+     *                       where mathjs is optional
+     * @returns {ConstantNode}
+     */
+    static fromJSON(json) {
+      return new ConstantNode(json.value);
+    }
+
+    /**
+     * Get LaTeX representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toTex(options) {
+      var value = this._toString(options);
+      var type = typeOf(this.value);
+      switch (type) {
+        case 'string':
+          return '\\mathtt{' + escapeLatex(value) + '}';
+        case 'number':
+        case 'BigNumber':
+          {
+            var finite = type === 'BigNumber' ? this.value.isFinite() : isFinite(this.value);
+            if (!finite) {
+              return this.value.valueOf() < 0 ? '-\\infty' : '\\infty';
+            }
+            var index = value.toLowerCase().indexOf('e');
+            if (index !== -1) {
+              return value.substring(0, index) + '\\cdot10^{' + value.substring(index + 1) + '}';
+            }
+            return value;
+          }
+        case 'bigint':
+          {
+            return value.toString();
+          }
+        case 'Fraction':
+          return this.value.toLatex();
+        default:
+          return value;
+      }
+    }
+  }
+  _defineProperty(ConstantNode, "name", name);
+  return ConstantNode;
+}, {
+  isClass: true,
+  isNode: true
+});