feat:node-modules

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

@@ -0,0 +1,479 @@
+import _defineProperty from "@babel/runtime/helpers/defineProperty";
+import { isAccessorNode, isFunctionAssignmentNode, isIndexNode, isNode, isSymbolNode } from '../../utils/is.js';
+import { escape, format } from '../../utils/string.js';
+import { hasOwnProperty } from '../../utils/object.js';
+import { getSafeProperty, getSafeMethod } from '../../utils/customs.js';
+import { createSubScope } from '../../utils/scope.js';
+import { factory } from '../../utils/factory.js';
+import { defaultTemplate, latexFunctions } from '../../utils/latex.js';
+var name = 'FunctionNode';
+var dependencies = ['math', 'Node', 'SymbolNode'];
+export var createFunctionNode = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var _FunctionNode;
+  var {
+    math,
+    Node,
+    SymbolNode
+  } = _ref;
+  /* format to fixed length */
+  var strin = entity => format(entity, {
+    truncate: 78
+  });
+
+  /*
+   * Expand a LaTeX template
+   *
+   * @param {string} template
+   * @param {Node} node
+   * @param {Object} options
+   * @private
+   **/
+  function expandTemplate(template, node, options) {
+    var latex = '';
+
+    // Match everything of the form ${identifier} or ${identifier[2]} or $$
+    // while submatching identifier and 2 (in the second case)
+    var regex = /\$(?:\{([a-z_][a-z_0-9]*)(?:\[([0-9]+)\])?\}|\$)/gi;
+    var inputPos = 0; // position in the input string
+    var match;
+    while ((match = regex.exec(template)) !== null) {
+      // go through all matches
+      // add everything in front of the match to the LaTeX string
+      latex += template.substring(inputPos, match.index);
+      inputPos = match.index;
+      if (match[0] === '$$') {
+        // escaped dollar sign
+        latex += '$';
+        inputPos++;
+      } else {
+        // template parameter
+        inputPos += match[0].length;
+        var property = node[match[1]];
+        if (!property) {
+          throw new ReferenceError('Template: Property ' + match[1] + ' does not exist.');
+        }
+        if (match[2] === undefined) {
+          // no square brackets
+          switch (typeof property) {
+            case 'string':
+              latex += property;
+              break;
+            case 'object':
+              if (isNode(property)) {
+                latex += property.toTex(options);
+              } else if (Array.isArray(property)) {
+                // make array of Nodes into comma separated list
+                latex += property.map(function (arg, index) {
+                  if (isNode(arg)) {
+                    return arg.toTex(options);
+                  }
+                  throw new TypeError('Template: ' + match[1] + '[' + index + '] is not a Node.');
+                }).join(',');
+              } else {
+                throw new TypeError('Template: ' + match[1] + ' has to be a Node, String or array of Nodes');
+              }
+              break;
+            default:
+              throw new TypeError('Template: ' + match[1] + ' has to be a Node, String or array of Nodes');
+          }
+        } else {
+          // with square brackets
+          if (isNode(property[match[2]] && property[match[2]])) {
+            latex += property[match[2]].toTex(options);
+          } else {
+            throw new TypeError('Template: ' + match[1] + '[' + match[2] + '] is not a Node.');
+          }
+        }
+      }
+    }
+    latex += template.slice(inputPos); // append rest of the template
+
+    return latex;
+  }
+  class FunctionNode extends Node {
+    /**
+     * @constructor FunctionNode
+     * @extends {./Node}
+     * invoke a list with arguments on a node
+     * @param {./Node | string} fn
+     *     Item resolving to a function on which to invoke
+     *     the arguments, typically a SymbolNode or AccessorNode
+     * @param {./Node[]} args
+     */
+    constructor(fn, args) {
+      super();
+      if (typeof fn === 'string') {
+        fn = new SymbolNode(fn);
+      }
+
+      // validate input
+      if (!isNode(fn)) throw new TypeError('Node expected as parameter "fn"');
+      if (!Array.isArray(args) || !args.every(isNode)) {
+        throw new TypeError('Array containing Nodes expected for parameter "args"');
+      }
+      this.fn = fn;
+      this.args = args || [];
+    }
+
+    // readonly property name
+    get name() {
+      return this.fn.name || '';
+    }
+    get type() {
+      return name;
+    }
+    get isFunctionNode() {
+      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) {
+      // compile arguments
+      var evalArgs = this.args.map(arg => arg._compile(math, argNames));
+      if (isSymbolNode(this.fn)) {
+        var _name = this.fn.name;
+        if (!argNames[_name]) {
+          // we can statically determine whether the function
+          // has the rawArgs property
+          var fn = _name in math ? getSafeProperty(math, _name) : undefined;
+          var isRaw = typeof fn === 'function' && fn.rawArgs === true;
+          var resolveFn = scope => {
+            var value;
+            if (scope.has(_name)) {
+              value = scope.get(_name);
+            } else if (_name in math) {
+              value = getSafeProperty(math, _name);
+            } else {
+              return FunctionNode.onUndefinedFunction(_name);
+            }
+            if (typeof value === 'function') {
+              return value;
+            }
+            throw new TypeError("'".concat(_name, "' is not a function; its value is:\n  ").concat(strin(value)));
+          };
+          if (isRaw) {
+            // pass unevaluated parameters (nodes) to the function
+            // "raw" evaluation
+            var rawArgs = this.args;
+            return function evalFunctionNode(scope, args, context) {
+              var fn = resolveFn(scope);
+
+              // the original function can be overwritten in the scope with a non-rawArgs function
+              if (fn.rawArgs === true) {
+                return fn(rawArgs, math, createSubScope(scope, args));
+              } else {
+                // "regular" evaluation
+                var values = evalArgs.map(evalArg => evalArg(scope, args, context));
+                return fn(...values);
+              }
+            };
+          } else {
+            // "regular" evaluation
+            switch (evalArgs.length) {
+              case 0:
+                return function evalFunctionNode(scope, args, context) {
+                  var fn = resolveFn(scope);
+                  return fn();
+                };
+              case 1:
+                return function evalFunctionNode(scope, args, context) {
+                  var fn = resolveFn(scope);
+                  var evalArg0 = evalArgs[0];
+                  return fn(evalArg0(scope, args, context));
+                };
+              case 2:
+                return function evalFunctionNode(scope, args, context) {
+                  var fn = resolveFn(scope);
+                  var evalArg0 = evalArgs[0];
+                  var evalArg1 = evalArgs[1];
+                  return fn(evalArg0(scope, args, context), evalArg1(scope, args, context));
+                };
+              default:
+                return function evalFunctionNode(scope, args, context) {
+                  var fn = resolveFn(scope);
+                  var values = evalArgs.map(evalArg => evalArg(scope, args, context));
+                  return fn(...values);
+                };
+            }
+          }
+        } else {
+          // the function symbol is an argName
+          var _rawArgs = this.args;
+          return function evalFunctionNode(scope, args, context) {
+            var fn = getSafeProperty(args, _name);
+            if (typeof fn !== 'function') {
+              throw new TypeError("Argument '".concat(_name, "' was not a function; received: ").concat(strin(fn)));
+            }
+            if (fn.rawArgs) {
+              // "Raw" evaluation
+              return fn(_rawArgs, math, createSubScope(scope, args));
+            } else {
+              var values = evalArgs.map(evalArg => evalArg(scope, args, context));
+              return fn.apply(fn, values);
+            }
+          };
+        }
+      } else if (isAccessorNode(this.fn) && isIndexNode(this.fn.index) && this.fn.index.isObjectProperty()) {
+        // execute the function with the right context:
+        // the object of the AccessorNode
+
+        var evalObject = this.fn.object._compile(math, argNames);
+        var prop = this.fn.index.getObjectProperty();
+        var _rawArgs2 = this.args;
+        return function evalFunctionNode(scope, args, context) {
+          var object = evalObject(scope, args, context);
+          var fn = getSafeMethod(object, prop);
+          if (fn !== null && fn !== void 0 && fn.rawArgs) {
+            // "Raw" evaluation
+            return fn(_rawArgs2, math, createSubScope(scope, args));
+          } else {
+            // "regular" evaluation
+            var values = evalArgs.map(evalArg => evalArg(scope, args, context));
+            return fn.apply(object, values);
+          }
+        };
+      } else {
+        // node.fn.isAccessorNode && !node.fn.index.isObjectProperty()
+        // we have to dynamically determine whether the function has the
+        // rawArgs property
+        var fnExpr = this.fn.toString();
+        var evalFn = this.fn._compile(math, argNames);
+        var _rawArgs3 = this.args;
+        return function evalFunctionNode(scope, args, context) {
+          var fn = evalFn(scope, args, context);
+          if (typeof fn !== 'function') {
+            throw new TypeError("Expression '".concat(fnExpr, "' did not evaluate to a function; value is:") + "\n  ".concat(strin(fn)));
+          }
+          if (fn.rawArgs) {
+            // "Raw" evaluation
+            return fn(_rawArgs3, math, createSubScope(scope, args));
+          } else {
+            // "regular" evaluation
+            var values = evalArgs.map(evalArg => evalArg(scope, args, context));
+            return fn.apply(fn, values);
+          }
+        };
+      }
+    }
+
+    /**
+     * 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.fn, 'fn', this);
+      for (var i = 0; i < this.args.length; i++) {
+        callback(this.args[i], 'args[' + i + ']', this);
+      }
+    }
+
+    /**
+     * Create a new FunctionNode 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 {FunctionNode} Returns a transformed copy of the node
+     */
+    map(callback) {
+      var fn = this._ifNode(callback(this.fn, 'fn', this));
+      var args = [];
+      for (var i = 0; i < this.args.length; i++) {
+        args[i] = this._ifNode(callback(this.args[i], 'args[' + i + ']', this));
+      }
+      return new FunctionNode(fn, args);
+    }
+
+    /**
+     * Create a clone of this node, a shallow copy
+     * @return {FunctionNode}
+     */
+    clone() {
+      return new FunctionNode(this.fn, this.args.slice(0));
+    }
+
+    /**
+     * Throws an error 'Undefined function {name}'
+     * @param {string} name
+     */
+
+    /**
+     * Get string representation. (wrapper function)
+     * This overrides parts of Node's toString function.
+     * If callback is an object containing callbacks, it
+     * calls the correct callback for the current node,
+     * otherwise it falls back to calling Node's toString
+     * function.
+     *
+     * @param {Object} options
+     * @return {string} str
+     * @override
+     */
+    toString(options) {
+      var customString;
+      var name = this.fn.toString(options);
+      if (options && typeof options.handler === 'object' && hasOwnProperty(options.handler, name)) {
+        // callback is a map of callback functions
+        customString = options.handler[name](this, options);
+      }
+      if (typeof customString !== 'undefined') {
+        return customString;
+      }
+
+      // fall back to Node's toString
+      return super.toString(options);
+    }
+
+    /**
+     * Get string representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toString(options) {
+      var args = this.args.map(function (arg) {
+        return arg.toString(options);
+      });
+      var fn = isFunctionAssignmentNode(this.fn) ? '(' + this.fn.toString(options) + ')' : this.fn.toString(options);
+
+      // format the arguments like "add(2, 4.2)"
+      return fn + '(' + args.join(', ') + ')';
+    }
+
+    /**
+     * Get a JSON representation of the node
+     * @returns {Object}
+     */
+    toJSON() {
+      return {
+        mathjs: name,
+        fn: this.fn,
+        args: this.args
+      };
+    }
+
+    /**
+     * Instantiate an AssignmentNode from its JSON representation
+     * @param {Object} json  An object structured like
+     *                       `{"mathjs": "FunctionNode", fn: ..., args: ...}`,
+     *                       where mathjs is optional
+     * @returns {FunctionNode}
+     */
+
+    /**
+     * Get HTML representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toHTML(options) {
+      var args = this.args.map(function (arg) {
+        return arg.toHTML(options);
+      });
+
+      // format the arguments like "add(2, 4.2)"
+      return '<span class="math-function">' + escape(this.fn) + '</span><span class="math-paranthesis math-round-parenthesis">(</span>' + args.join('<span class="math-separator">,</span>') + '<span class="math-paranthesis math-round-parenthesis">)</span>';
+    }
+
+    /**
+     * Get LaTeX representation. (wrapper function)
+     * This overrides parts of Node's toTex function.
+     * If callback is an object containing callbacks, it
+     * calls the correct callback for the current node,
+     * otherwise it falls back to calling Node's toTex
+     * function.
+     *
+     * @param {Object} options
+     * @return {string}
+     */
+    toTex(options) {
+      var customTex;
+      if (options && typeof options.handler === 'object' && hasOwnProperty(options.handler, this.name)) {
+        // callback is a map of callback functions
+        customTex = options.handler[this.name](this, options);
+      }
+      if (typeof customTex !== 'undefined') {
+        return customTex;
+      }
+
+      // fall back to Node's toTex
+      return super.toTex(options);
+    }
+
+    /**
+     * Get LaTeX representation
+     * @param {Object} options
+     * @return {string} str
+     */
+    _toTex(options) {
+      var args = this.args.map(function (arg) {
+        // get LaTeX of the arguments
+        return arg.toTex(options);
+      });
+      var latexConverter;
+      if (latexFunctions[this.name]) {
+        latexConverter = latexFunctions[this.name];
+      }
+
+      // toTex property on the function itself
+      if (math[this.name] && (typeof math[this.name].toTex === 'function' || typeof math[this.name].toTex === 'object' || typeof math[this.name].toTex === 'string')) {
+        // .toTex is a callback function
+        latexConverter = math[this.name].toTex;
+      }
+      var customToTex;
+      switch (typeof latexConverter) {
+        case 'function':
+          // a callback function
+          customToTex = latexConverter(this, options);
+          break;
+        case 'string':
+          // a template string
+          customToTex = expandTemplate(latexConverter, this, options);
+          break;
+        case 'object':
+          // an object with different "converters" for different
+          // numbers of arguments
+          switch (typeof latexConverter[args.length]) {
+            case 'function':
+              customToTex = latexConverter[args.length](this, options);
+              break;
+            case 'string':
+              customToTex = expandTemplate(latexConverter[args.length], this, options);
+              break;
+          }
+      }
+      if (typeof customToTex !== 'undefined') {
+        return customToTex;
+      }
+      return expandTemplate(defaultTemplate, this, options);
+    }
+
+    /**
+     * Get identifier.
+     * @return {string}
+     */
+    getIdentifier() {
+      return this.type + ':' + this.name;
+    }
+  }
+  _FunctionNode = FunctionNode;
+  _defineProperty(FunctionNode, "name", name);
+  _defineProperty(FunctionNode, "onUndefinedFunction", function (name) {
+    throw new Error('Undefined function ' + name);
+  });
+  _defineProperty(FunctionNode, "fromJSON", function (json) {
+    return new _FunctionNode(json.fn, json.args);
+  });
+  return FunctionNode;
+}, {
+  isClass: true,
+  isNode: true
+});