      1 /*
      2  JessieCode Interpreter and Compiler
      3
      4     Copyright 2011-2018
      5         Michael Gerhaeuser,
      6         Alfred Wassermann
      7
      8     JessieCode is free software dual licensed under the GNU LGPL or MIT License.
      9
     10     You can redistribute it and/or modify it under the terms of the
     11
     12       * GNU Lesser General Public License as published by
     13         the Free Software Foundation, either version 3 of the License, or
     14         (at your option) any later version
     15       OR
     16       * MIT License: https://github.com/jsxgraph/jsxgraph/blob/master/LICENSE.MIT
     17
     18     JessieCode is distributed in the hope that it will be useful,
     19     but WITHOUT ANY WARRANTY; without even the implied warranty of
     20     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     21     GNU Lesser General Public License for more details.
     22
     23     You should have received a copy of the GNU Lesser General Public License and
     24     the MIT License along with JessieCode. If not, see <http://www.gnu.org/licenses/>
     25     and <http://opensource.org/licenses/MIT/>.
     26  */
     27
     28 /*global JXG: true, define: true, window: true, console: true, self: true, document: true, parser: true*/
     29 /*jslint nomen: true, plusplus: true*/
     30
     31 /* depends:
     32  jxg
     33  parser/geonext
     34  base/constants
     35  base/text
     36  math/math
     37  math/geometry
     38  math/statistics
     39  utils/type
     40  utils/uuid
     41  */
     42
     43 /**
     44  * @fileoverview JessieCode is a scripting language designed to provide a
     45  * simple scripting language to build constructions
     46  * with JSXGraph. It is similar to JavaScript, but prevents access to the DOM.
     47  * Hence, it can be used in community driven math portals which want to use
     48  * JSXGraph to display interactive math graphics.
     49  */
     50
     51 define([
     52     'jxg', 'base/constants', 'base/text', 'math/math', 'math/geometry', 'math/statistics', 'utils/type', 'utils/uuid', 'utils/env'
     53 ], function (JXG, Const, Text, Mat, Geometry, Statistics, Type, UUID, Env) {
     54
     55     ;
     56
     57     // IE 6-8 compatibility
     58     if (!Object.create) {
     59         Object.create = function(o, properties) {
     60             if (typeof o !== 'object' && typeof o !== 'function') throw new TypeError('Object prototype may only be an Object: ' + o);
     61             else if (o === null) throw new Error("This browser's implementation of Object.create is a shim and doesn't support 'null' as the first argument.");
     62
     63             if (typeof properties != 'undefined') throw new Error("This browser's implementation of Object.create is a shim and doesn't support a second argument.");
     64
     65             function F() {}
     66
     67             F.prototype = o;
     68
     69             return new F();
     70         };
     71     }
     72
     73     var priv = {
     74             modules: {
     75                 'math': Mat,
     76                 'math/geometry': Geometry,
     77                 'math/statistics': Statistics,
     78                 'math/numerics': Mat.Numerics
     79             }
     80         };
     81
     82     /**
     83      * A JessieCode object provides an interface to the parser and stores all variables and objects used within a JessieCode script.
     84      * The optional argument <tt>code</tt> is interpreted after initializing. To evaluate more code after initializing a JessieCode instance
     85      * please use {@link JXG.JessieCode#parse}. For code snippets like single expressions use {@link JXG.JessieCode#snippet}.
     86      * @constructor
     87      * @param {String} [code] Code to parse.
     88      * @param {Boolean} [geonext=false] Geonext compatibility mode.
     89      */
     90     JXG.JessieCode = function (code, geonext) {
     91         // Control structures
     92
     93         /**
     94          * The global scope.
     95          * @type {Object}
     96          */
     97         this.scope = {
     98             id: 0,
     99             hasChild: true,
    100             args: [],
    101             locals: {},
    102             context: null,
    103             previous: null
    104         };
    105
    106         /**
    107          * Keeps track of all possible scopes every required.
    108          * @type {Array}
    109          */
    110         this.scopes = [];
    111         this.scopes.push(this.scope);
    112
    113         /**
    114          * A stack to store debug information (like line and column where it was defined) of a parameter
    115          * @type Array
    116          * @private
    117          */
    118         this.dpstack = [[]];
    119
    120         /**
    121          * Determines the parameter stack scope.
    122          * @type Number
    123          * @private
    124          */
    125         this.pscope = 0;
    126
    127         /**
    128          * Used to store the property-value definition while parsing an object literal.
    129          * @type Array
    130          * @private
    131          */
    132         this.propstack = [{}];
    133
    134         /**
    135          * The current scope of the object literal stack {@link JXG.JessieCode#propstack}.
    136          * @type Number
    137          * @private
    138          */
    139         this.propscope = 0;
    140
    141         /**
    142          * Store the left hand side of an assignment. If an element is constructed and no attributes are given, this is
    143          * used as the element's name.
    144          * @type Array
    145          * @private
    146          */
    147         this.lhs = [];
    148
    149         /**
    150          * lhs flag, used by JXG.JessieCode#replaceNames
    151          * @type Boolean
    152          * @default false
    153          */
    154         this.isLHS = false;
    155
    156         /**
    157          * The id of an HTML node in which innerHTML all warnings are stored (if no <tt>console</tt> object is available).
    158          * @type String
    159          * @default 'jcwarn'
    160          */
    161         this.warnLog = 'jcwarn';
    162
    163         /**
    164          * Store $log messages in case there's no console.
    165          * @type {Array}
    166          */
    167         this.$log = [];
    168
    169         /**
    170          * Built-in functions and constants
    171          * @type Object
    172          */
    173         this.builtIn = this.defineBuiltIn();
    174
    175         /**
    176          * The board which currently is used to create and look up elements.
    177          * @type JXG.Board
    178          */
    179         this.board = null;
    180
    181         /**
    182          * Keep track of which element is created in which line.
    183          * @type Object
    184          */
    185         this.lineToElement = {};
    186
    187         this.parCurLine = 1;
    188         this.parCurColumn = 0;
    189         this.line = 1;
    190         this.col = 1;
    191
    192         if (JXG.CA) {
    193             this.CA = new JXG.CA(this.node, this.createNode, this);
    194         }
    195
    196         this.code = '';
    197
    198         if (typeof code === 'string') {
    199             this.parse(code, geonext);
    200         }
    201     };
    202
    203
    204     JXG.extend(JXG.JessieCode.prototype, /** @lends JXG.JessieCode.prototype */ {
    205         /**
    206          * Create a new parse tree node.
    207          * @param {String} type Type of node, e.g. node_op, node_var, or node_const
    208          * @param value The nodes value, e.g. a variables value or a functions body.
    209          * @param {Array} children Arbitrary number of child nodes.
    210          */
    211         node: function (type, value, children) {
    212             return {
    213                 type: type,
    214                 value: value,
    215                 children: children
    216             };
    217         },
    218
    219         /**
    220          * Create a new parse tree node. Basically the same as node(), but this builds
    221          * the children part out of an arbitrary number of parameters, instead of one
    222          * array parameter.
    223          * @param {String} type Type of node, e.g. node_op, node_var, or node_const
    224          * @param value The nodes value, e.g. a variables value or a functions body.
    225          * @param children Arbitrary number of parameters; define the child nodes.
    226          */
    227         createNode: function (type, value, children) {
    228             var n = this.node(type, value, []),
    229                 i;
    230
    231             for (i = 2; i < arguments.length; i++) {
    232                 n.children.push(arguments[i]);
    233             }
    234
    235             if (n.type == 'node_const' && Type.isNumber(n.value)) {
    236                 n.isMath = true;
    237             }
    238
    239             n.line = this.parCurLine;
    240             n.col = this.parCurColumn;
    241
    242             return n;
    243         },
    244
    245         /**
    246          * Create a new scope.
    247          * @param {Array} args
    248          * @returns {Object}
    249          */
    250         pushScope: function (args) {
    251             var scope = {
    252                     args: args,
    253                     locals: {},
    254                     context: null,
    255                     previous: this.scope
    256                 };
    257
    258             this.scope.hasChild = true;
    259             this.scope = scope;
    260             scope.id = this.scopes.push(scope) - 1;
    261
    262             return scope;
    263         },
    264
    265         /**
    266          * Remove the current scope and reinstate the previous scope
    267          * @returns {Object}
    268          */
    269         popScope: function () {
    270             var s = this.scope.previous;
    271
    272             // make sure the global scope is not lost
    273             this.scope = s !== null ? s : this.scope;
    274
    275             return this.scope;
    276         },
    277
    278         /**
    279          * Looks up an {@link JXG.GeometryElement} by its id.
    280          * @param {String} id
    281          * @returns {JXG.GeometryElement}
    282          */
    283         getElementById: function (id) {
    284             return this.board.objects[id];
    285         },
    286
    287         log: function () {
    288             this.$log.push(arguments);
    289
    290             if (typeof console === 'object' && console.log) {
    291                 console.log.apply(console, arguments);
    292             }
    293         },
    294
    295         /**
    296          * Returns a element creator function which takes two parameters: the parents array and the attributes object.
    297          * @param {String} vname The element type, e.g. 'point', 'line', 'midpoint'
    298          * @returns {function}
    299          */
    300         creator: (function () {
    301             // stores the already defined creators
    302             var _ccache = {}, r;
    303
    304             r = function (vname) {
    305                 var f;
    306
    307                 // _ccache is global, i.e. it is the same for ALL JessieCode instances.
    308                 // That's why we need the board id here
    309                 if (typeof _ccache[this.board.id + vname] === 'function') {
    310                     f =  _ccache[this.board.id + vname];
    311                 } else {
    312                     f = (function (that) {
    313                         return function (parameters, attributes) {
    314                             var attr;
    315
    316                             if (Type.exists(attributes)) {
    317                                 attr = attributes;
    318                             } else {
    319                                 attr = {name: (that.lhs[that.scope] !== 0 ? that.lhs[that.scope] : '')};
    320                             }
    321                             return that.board.create(vname, parameters, attr);
    322                         };
    323                     }(this));
    324
    325                     f.creator = true;
    326                     _ccache[this.board.id + vname] = f;
    327                 }
    328
    329                 return f;
    330             };
    331
    332             r.clearCache = function () {
    333                 _ccache = {};
    334             };
    335
    336             return r;
    337         }()),
    338
    339         /**
    340          * Assigns a value to a variable in the current scope.
    341          * @param {String} vname Variable name
    342          * @param value Anything
    343          * @see JXG.JessieCode#sstack
    344          * @see JXG.JessieCode#scope
    345          */
    346         letvar: function (vname, value) {
    347             if (this.builtIn[vname]) {
    348                 this._warn('"' + vname + '" is a predefined value.');
    349             }
    350
    351             this.scope.locals[vname] = value;
    352         },
    353
    354         /**
    355          * Checks if the given variable name can be found in the current scope chain.
    356          * @param {String} vname
    357          * @returns {Object} A reference to the scope object the variable can be found in or null if it can't be found.
    358          */
    359         isLocalVariable: function (vname) {
    360             var s = this.scope;
    361
    362             while (s !== null) {
    363                 if (Type.exists(s.locals[vname])) {
    364                     return s;
    365                 }
    366
    367                 s = s.previous;
    368             }
    369
    370             return null;
    371         },
    372
    373         /**
    374          * Checks if the given variable name is a parameter in any scope from the current to the global scope.
    375          * @param {String} vname
    376          * @returns {Object} A reference to the scope object that contains the variable in its arg list.
    377          */
    378         isParameter: function (vname) {
    379             var s = this.scope;
    380
    381             while (s !== null) {
    382                 if (Type.indexOf(s.args, vname) > -1) {
    383                     return s;
    384                 }
    385
    386                 s = s.previous;
    387             }
    388
    389             return null;
    390         },
    391
    392         /**
    393          * Checks if the given variable name is a valid creator method.
    394          * @param {String} vname
    395          * @returns {Boolean}
    396          */
    397         isCreator: function (vname) {
    398             // check for an element with this name
    399             return !!JXG.elements[vname];
    400         },
    401
    402         /**
    403          * Checks if the given variable identifier is a valid member of the JavaScript Math Object.
    404          * @param {String} vname
    405          * @returns {Boolean}
    406          */
    407         isMathMethod: function (vname) {
    408             return vname !== 'E' && !!Math[vname];
    409         },
    410
    411         /**
    412          * Returns true if the given identifier is a builtIn variable/function.
    413          * @param {String} vname
    414          * @returns {Boolean}
    415          */
    416         isBuiltIn: function (vname) {
    417             return !!this.builtIn[vname];
    418         },
    419
    420         /**
    421          * Looks up the value of the given variable.
    422          * @param {String} vname Name of the variable
    423          * @param {Boolean} [local=false] Only look up the internal symbol table and don't look for
    424          * the <tt>vname</tt> in Math or the element list.
    425          */
    426         getvar: function (vname, local) {
    427             var s;
    428
    429             local = Type.def(local, false);
    430
    431             s = this.isLocalVariable(vname);
    432             if (s !== null) {
    433                 return s.locals[vname];
    434             }
    435
    436             // check for an element with this name
    437             if (this.isCreator(vname)) {
    438                 return this.creator(vname);
    439             }
    440
    441             if (this.isBuiltIn(vname)) {
    442                 return this.builtIn[vname];
    443             }
    444
    445             if (this.isMathMethod(vname)) {
    446                 return Math[vname];
    447             }
    448
    449             if (!local) {
    450                 s = this.board.select(vname);
    451                 if (s !== vname) {
    452                     return s;
    453                 }
    454             }
    455         },
    456
    457         /**
    458          * Look up the value of a local variable.
    459          * @param {string} vname
    460          * @returns {*}
    461          */
    462         resolve: function (vname) {
    463             var s = this.scope;
    464
    465             while (s !== null) {
    466                 if (Type.exists(s.locals[vname])) {
    467                     return s.locals[vname];
    468                 }
    469
    470                 s = s.previous;
    471             }
    472         },
    473
    474         /**
    475          * TODO this needs to be called from JS and should not generate JS code
    476          * Looks up a variable identifier in various tables and generates JavaScript code that could be eval'd to get the value.
    477          * @param {String} vname Identifier
    478          * @param {Boolean} [local=false] Don't resolve ids and names of elements
    479          * @param {Boolean} [withProps=false]
    480          */
    481         getvarJS: function (vname, local, withProps) {
    482             var s, r = '';
    483
    484             local = Type.def(local, false);
    485             withProps = Type.def(withProps, false);
    486
    487             s = this.isParameter(vname);
    488             if (s !== null) {
    489                 return vname;
    490             }
    491
    492             s = this.isLocalVariable(vname);
    493             if (s !== null && !withProps) {
    494                 return '$jc$.resolve(\'' + vname + '\')';
    495             }
    496
    497             // check for an element with this name
    498             if (this.isCreator(vname)) {
    499                 return '(function () { var a = Array.prototype.slice.call(arguments, 0), props = ' + (withProps ? 'a.pop()' : '{}') + '; return $jc$.board.create.apply($jc$.board, [\'' + vname + '\'].concat([a, props])); })';
    500             }
    501
    502             if (withProps) {
    503                 this._error('Syntax error (attribute values are allowed with element creators only)');
    504             }
    505
    506             if (this.isBuiltIn(vname)) {
    507                 // if src does not exist, it is a number. in that case, just return the value.
    508                 return this.builtIn[vname].src || this.builtIn[vname];
    509             }
    510
    511             if (this.isMathMethod(vname)) {
    512                 return 'Math.' + vname;
    513             }
    514
    515             if (!local) {
    516                 if (Type.isId(this.board, vname)) {
    517                     r = '$jc$.board.objects[\'' + vname + '\']';
    518                 } else if (Type.isName(this.board, vname)) {
    519                     r = '$jc$.board.elementsByName[\'' + vname + '\']';
    520                 } else if (Type.isGroup(this.board, vname)) {
    521                     r = '$jc$.board.groups[\'' + vname + '\']';
    522                 }
    523
    524                 return r;
    525             }
    526
    527             return '';
    528         },
    529
    530         /**
    531          * Adds the property <tt>isMap</tt> to a function and sets it to true.
    532          * @param {function} f
    533          * @returns {function}
    534          */
    535         makeMap: function (f) {
    536             f.isMap = true;
    537
    538             return f;
    539         },
    540
    541         functionCodeJS: function (node) {
    542             var p = node.children[0].join(', '),
    543                 bo = '',
    544                 bc = '';
    545
    546             if (node.value === 'op_map') {
    547                 bo = '{ return  ';
    548                 bc = ' }';
    549             }
    550
    551             return 'function (' + p + ') {\n' +
    552                     'var $oldscope$ = $jc$.scope;\n' +
    553                     '$jc$.scope = $jc$.scopes[' + this.scope.id + '];\n' +
    554                     'var r = (function () ' + bo + this.compile(node.children[1], true) + bc + ')();\n' +
    555                     '$jc$.scope = $oldscope$;\n' +
    556                     'return r;\n' +
    557                 '}';
    558         },
    559
    560         /**
    561          * Converts a node type <tt>node_op</tt> and value <tt>op_map</tt> or <tt>op_function</tt> into a executable
    562          * function.
    563          * @param {Object} node
    564          * @returns {function}
    565          */
    566         defineFunction: function (node) {
    567             var fun, i,
    568                 list = node.children[0],
    569                 scope = this.pushScope(list);
    570
    571             if (this.board.options.jc.compile) {
    572                 this.isLHS = false;
    573
    574                 // we currently need to put the parameters into the local scope
    575                 // until the compiled JS variable lookup code is fixed
    576                 for (i = 0; i < list.length; i++) {
    577                     scope.locals[list[i]] = list[i];
    578                 }
    579
    580                 this.replaceNames(node.children[1]);
    581
    582                 /** @ignore */
    583                 fun = (function ($jc$) {
    584                     var fun,
    585                         str = 'var f = ' + $jc$.functionCodeJS(node) + '; f;';
    586
    587                     try {
    588                         // yeah, eval is evil, but we don't have much choice here.
    589                         // the str is well defined and there is no user input in it that we didn't check before
    590
    591                         /*jslint evil:true*/
    592                         fun = eval(str);
    593                         /*jslint evil:false*/
    594
    595                         return fun;
    596                     } catch (e) {
    597                         $jc$._warn('error compiling function\n\n' + str + '\n\n' + e.toString());
    598                         return function () {};
    599                     }
    600                 }(this));
    601
    602                 // clean up scope
    603                 this.popScope();
    604             } else {
    605                 /** @ignore */
    606                 fun = (function (_pstack, that, id) {
    607                     return function () {
    608                         var r, oldscope;
    609
    610                         oldscope = that.scope;
    611                         that.scope = that.scopes[id];
    612
    613                         for (r = 0; r < _pstack.length; r++) {
    614                             that.scope.locals[_pstack[r]] = arguments[r];
    615                         }
    616
    617                         r = that.execute(node.children[1]);
    618                         that.scope = oldscope;
    619
    620                         return r;
    621                     };
    622                 }(list, this, scope.id));
    623             }
    624
    625             fun.node = node;
    626             fun.scope = scope;
    627             fun.toJS = fun.toString;
    628             fun.toString = (function (_that) {
    629                 return function () {
    630                     return _that.compile(_that.replaceIDs(Type.deepCopy(node)));
    631                 };
    632             }(this));
    633
    634             fun.deps = {};
    635             this.collectDependencies(node.children[1], fun.deps);
    636
    637             return fun;
    638         },
    639
    640         /**
    641          * Merge all attribute values given with an element creator into one object.
    642          * @param {Object} o An arbitrary number of objects
    643          * @returns {Object} All given objects merged into one. If properties appear in more (case sensitive) than one
    644          * object the last value is taken.
    645          */
    646         mergeAttributes: function (o) {
    647             var i, attr = {};
    648
    649             for (i = 0; i < arguments.length; i++) {
    650                 attr = Type.deepCopy(attr, arguments[i], true);
    651             }
    652
    653             return attr;
    654         },
    655
    656         /**
    657          * Sets the property <tt>what</tt> of <tt>o</tt> to <tt>value</tt>
    658          * @param {JXG.Point|JXG.Text} o
    659          * @param {String} what
    660          * @param value
    661          */
    662         setProp: function (o, what, value) {
    663             var par = {}, x, y;
    664
    665             if (o.elementClass === Const.OBJECT_CLASS_POINT && (what === 'X' || what === 'Y')) {
    666                 // set coords
    667
    668                 what = what.toLowerCase();
    669
    670                 // we have to deal with three cases here:
    671                 // o.isDraggable && typeof value === number:
    672                 //   stay draggable, just set the new coords (e.g. via moveTo)
    673                 // o.isDraggable && typeof value === function:
    674                 //   convert to !o.isDraggable, set the new coords via o.addConstraint()
    675                 // !o.isDraggable:
    676                 //   stay !o.isDraggable, update the given coord by overwriting X/YEval
    677
    678                 if (o.isDraggable && typeof value === 'number') {
    679                     x = what === 'x' ? value : o.X();
    680                     y = what === 'y' ? value : o.Y();
    681
    682                     o.setPosition(Const.COORDS_BY_USER, [x, y]);
    683                 } else if (o.isDraggable && (typeof value === 'function' || typeof value === 'string')) {
    684                     x = what === 'x' ? value : o.coords.usrCoords[1];
    685                     y = what === 'y' ? value : o.coords.usrCoords[2];
    686
    687                     o.addConstraint([x, y]);
    688                 } else if (!o.isDraggable) {
    689                     x = what === 'x' ? value : o.XEval.origin;
    690                     y = what === 'y' ? value : o.YEval.origin;
    691
    692                     o.addConstraint([x, y]);
    693                 }
    694
    695                 this.board.update();
    696             } else if (o.elementClass === Const.OBJECT_CLASS_TEXT && (what === 'X' || what === 'Y')) {
    697                 if (typeof value === 'number') {
    698                     o[what] = function () { return value; };
    699                 } else if (typeof value === 'function') {
    700                     o.isDraggable = false;
    701                     o[what] = value;
    702                 } else if (typeof value === 'string') {
    703                     o.isDraggable = false;
    704                     o[what] = Type.createFunction(value, this.board, null, true);
    705                     o[what + 'jc'] = value;
    706                 }
    707
    708                 o[what].origin = value;
    709
    710                 this.board.update();
    711             } else if (o.type && o.elementClass && o.visProp) {
    712                 if (Type.exists(o[o.methodMap[what]]) && typeof o[o.methodMap[what]] !== 'function') {
    713                     o[o.methodMap[what]] = value;
    714                 } else {
    715                     par[what] = value;
    716                     o.setAttribute(par);
    717                 }
    718             } else {
    719                 o[what] = value;
    720             }
    721         },
    722
    723         /**
    724          * Generic method to parse JessieCode.
    725          * This consists of generating an AST with parser.parse,
    726          * apply simplifying rules from CA and
    727          * manipulate the AST according to the second parameter "cmd".
    728          * @param  {String} code      JessieCode code to be parsed
    729          * @param  {String} cmd       Type of manipulation to be done with AST
    730          * @param {Boolean} [geonext=false] Geonext compatibility mode.
    731          * @param {Boolean} dontstore If false, the code string is stored in this.code.
    732          * @return {Object}           Returns result of computation as directed in cmd.
    733          */
    734         _genericParse:  function (code, cmd, geonext, dontstore) {
    735             var i, setTextBackup, ast, result,
    736                 ccode = code.replace(/\r\n/g, '\n').split('\n'),
    737                 cleaned = [];
    738
    739             if (!dontstore) {
    740                 this.code += code + '\n';
    741             }
    742
    743             if (Text) {
    744                 setTextBackup = Text.Text.prototype.setText;
    745                 Text.Text.prototype.setText = Text.Text.prototype.setTextJessieCode;
    746             }
    747
    748             try {
    749                 if (!Type.exists(geonext)) {
    750                     geonext = false;
    751                 }
    752
    753                 for (i = 0; i < ccode.length; i++) {
    754                     if (geonext) {
    755                         ccode[i] = JXG.GeonextParser.geonext2JS(ccode[i], this.board);
    756                     }
    757                     cleaned.push(ccode[i]);
    758                 }
    759
    760                 code = cleaned.join('\n');
    761                 ast = parser.parse(code);
    762                 if (this.CA) {
    763                     ast = this.CA.expandDerivatives(ast, null, ast);
    764                     ast = this.CA.removeTrivialNodes(ast);
    765                 }
    766                 switch (cmd) {
    767                     case 'parse':
    768                         result = this.execute(ast);
    769                         break;
    770                     case 'manipulate':
    771                         result = this.compile(ast);
    772                         break;
    773                     case 'getAst':
    774                         result = ast;
    775                         break;
    776                     default:
    777                         result = false;
    778                 }
    779             } catch (e) {  // catch is mandatory in old IEs
    780                 console.log(e);
    781             } finally {
    782                 // make sure the original text method is back in place
    783                 if (Text) {
    784                     Text.Text.prototype.setText = setTextBackup;
    785                 }
    786             }
    787
    788             return result;
    789         },
    790
    791         /**
    792          * Parses JessieCode.
    793          * This consists of generating an AST with parser.parse, apply simplifying rules
    794          * from CA and executing the ast by calling this.execute(ast).
    795          *
    796          * @param {String} code             JessieCode code to be parsed
    797          * @param {Boolean} [geonext=false] Geonext compatibility mode.
    798          * @param {Boolean} dontstore       If false, the code string is stored in this.code.
    799          * @private
    800          * @return {Object}                 Parse JessieCode code and execute it..
    801          */
    802         parse: function (code, geonext, dontstore) {
    803             return this._genericParse(code, 'parse', geonext, dontstore);
    804         },
    805
    806         /**
    807          * Manipulate JessieCode.
    808          * This consists of generating an AST with parser.parse,
    809          * apply simlifying rules from CA
    810          * and compile the AST back to JessieCode.
    811          *
    812          * @param {String} code             JessieCode code to be parsed
    813          * @param {Boolean} [geonext=false] Geonext compatibility mode.
    814          * @param {Boolean} dontstore       If false, the code string is stored in this.code.
    815          * @return {String}                 Simplified JessieCode code
    816          */
    817         manipulate: function (code, geonext, dontstore) {
    818             return this._genericParse(code, 'manipulate', geonext, dontstore);
    819         },
    820
    821         /**
    822          * Get abstract syntax tree (AST) from JessieCode code.
    823          * This consists of generating an AST with parser.parse.
    824          *
    825          * @param {String} code
    826          * @param {Boolean} [geonext=false] Geonext compatibility mode.
    827          * @param {Boolean} dontstore
    828          * @return {Node}  AST
    829          */
    830         getAST: function (code, geonext, dontstore) {
    831             return this._genericParse(code, 'getAst', geonext, dontstore);
    832         },
    833
    834         /**
    835          * Parses a JessieCode snippet, e.g. "3+4", and wraps it into a function, if desired.
    836          * @param {String} code A small snippet of JessieCode. Must not be an assignment.
    837          * @param {Boolean} funwrap If true, the code is wrapped in a function.
    838          * @param {String} varname Name of the parameter(s)
    839          * @param {Boolean} [geonext=false] Geonext compatibility mode.
    840          */
    841         snippet: function (code, funwrap, varname, geonext) {
    842             var c;
    843
    844             funwrap = Type.def(funwrap, true);
    845             varname = Type.def(varname, '');
    846             geonext = Type.def(geonext, false);
    847
    848             c = (funwrap ? ' function (' + varname + ') { return ' : '') + code + (funwrap ? '; }' : '') + ';';
    849
    850             return this.parse(c, geonext, true);
    851         },
    852
    853         /**
    854          * Traverses through the given subtree and changes all values of nodes with the replaced flag set by
    855          * {@link JXG.JessieCode#replaceNames} to the name of the element (if not empty).
    856          * @param {Object} node
    857          */
    858         replaceIDs: function (node) {
    859             var i, v;
    860
    861             if (node.replaced) {
    862                 // these children exist, if node.replaced is set.
    863                 v = this.board.objects[node.children[1][0].value];
    864
    865                 if (Type.exists(v) && v.name !== "") {
    866                     node.type = 'node_var';
    867                     node.value = v.name;
    868
    869                     // maybe it's not necessary, but just to be sure that everything is cleaned up we better delete all
    870                     // children and the replaced flag
    871                     node.children.length = 0;
    872                     delete node.replaced;
    873                 }
    874             }
    875
    876             if (node.children) {
    877                 // assignments are first evaluated on the right hand side
    878                 for (i = node.children.length; i > 0; i--) {
    879                     if (Type.exists(node.children[i - 1])) {
    880                         node.children[i - 1] = this.replaceIDs(node.children[i - 1]);
    881                     }
    882
    883                 }
    884             }
    885
    886             return node;
    887         },
    888
    889         /**
    890          * Traverses through the given subtree and changes all elements referenced by names through referencing them by ID.
    891          * An identifier is only replaced if it is not found in all scopes above the current scope and if it
    892          * has not been blacklisted within the codeblock determined by the given subtree.
    893          * @param {Object} node
    894          */
    895         replaceNames: function (node) {
    896             var i, v;
    897
    898             v = node.value;
    899
    900             // we are interested only in nodes of type node_var and node_op > op_lhs.
    901             // currently, we are not checking if the id is a local variable. in this case, we're stuck anyway.
    902
    903             if (node.type === 'node_op' && v === 'op_lhs' && node.children.length === 1) {
    904                 this.isLHS = true;
    905             } else if (node.type === 'node_var') {
    906                 if (this.isLHS) {
    907                     this.letvar(v, true);
    908                 } else if (!Type.exists(this.getvar(v, true)) && Type.exists(this.board.elementsByName[v])) {
    909                     node = this.createReplacementNode(node);
    910                 }
    911             }
    912
    913             if (node.children) {
    914                 // assignments are first evaluated on the right hand side
    915                 for (i = node.children.length; i > 0; i--) {
    916                     if (Type.exists(node.children[i - 1])) {
    917                         node.children[i - 1] = this.replaceNames(node.children[i - 1]);
    918                     }
    919                 }
    920             }
    921
    922             if (node.type === 'node_op' && node.value === 'op_lhs' && node.children.length === 1) {
    923                 this.isLHS = false;
    924             }
    925
    926             return node;
    927         },
    928
    929         /**
    930          * Replaces node_var nodes with node_op>op_execfun nodes, calling the internal $() function with the id of the
    931          * element accessed by the node_var node.
    932          * @param {Object} node
    933          * @returns {Object} op_execfun node
    934          */
    935         createReplacementNode: function (node) {
    936             var v = node.value,
    937                 el = this.board.elementsByName[v];
    938
    939             node = this.createNode('node_op', 'op_execfun',
    940                 this.createNode('node_var', '$'),
    941                 [this.createNode('node_str', el.id)]);
    942
    943             node.replaced = true;
    944
    945             return node;
    946         },
    947
    948         /**
    949          * Search the parse tree below <tt>node</tt> for <em>stationary</em> dependencies, i.e. dependencies hard coded into
    950          * the function.
    951          * @param {Object} node
    952          * @param {Object} result An object where the referenced elements will be stored. Access key is their id.
    953          */
    954         collectDependencies: function (node, result) {
    955             var i, v, e;
    956
    957             v = node.value;
    958
    959             if (node.type === 'node_var') {
    960                 e = this.getvar(v);
    961                 if (e && e.visProp && e.type && e.elementClass && e.id) {
    962                     result[e.id] = e;
    963                 }
    964             }
    965
    966             // the $()-function-calls are special because their parameter is given as a string, not as a node_var.
    967             if (node.type === 'node_op' && node.value === 'op_execfun' && node.children.length > 1 && node.children[0].value === '$' && node.children[1].length > 0) {
    968                 e = node.children[1][0].value;
    969                 result[e] = this.board.objects[e];
    970             }
    971
    972             if (node.children) {
    973                 for (i = node.children.length; i > 0; i--) {
    974                     if (Type.exists(node.children[i - 1])) {
    975                         this.collectDependencies(node.children[i - 1], result);
    976                     }
    977
    978                 }
    979             }
    980         },
    981
    982         resolveProperty: function (e, v, compile) {
    983             compile = Type.def(compile, false);
    984
    985             // is it a geometry element or a board?
    986             if (e /*&& e.type && e.elementClass*/ && e.methodMap) {
    987                 // yeah, it is. but what does the user want?
    988                 if (Type.exists(e.subs) && Type.exists(e.subs[v])) {
    989                     // a subelement it is, good sir.
    990                     e = e.subs;
    991                 } else if (Type.exists(e.methodMap[v])) {
    992                     // the user wants to call a method
    993                     v = e.methodMap[v];
    994                 } else {
    995                     // the user wants to change an attribute
    996                     e = e.visProp;
    997                     v = v.toLowerCase();
    998                 }
    999             }
    1000
    1001             if (Type.isFunction(e)) {
    1002                 this._error('Accessing function properties is not allowed.');
    1003             }
    1004
    1005             if (!Type.exists(e)) {
    1006                 this._error(e + ' is not an object');
    1007             }
    1008
    1009             if (!Type.exists(e[v])) {
    1010                 this._error('unknown property ' + v);
    1011             }
    1012
    1013             if (compile && typeof e[v] === 'function') {
    1014                 return function () { return e[v].apply(e, arguments); };
    1015             }
    1016
    1017             return e[v];
    1018         },
    1019
    1020         /**
    1021          * Resolves the lefthand side of an assignment operation
    1022          * @param node
    1023          * @returns {Object} An object with two properties. <strong>o</strong> which contains the object, and
    1024          * a string <strong>what</strong> which contains the property name.
    1025          */
    1026         getLHS: function (node) {
    1027             var res;
    1028
    1029             if (node.type === 'node_var') {
    1030                 res = {
    1031                     o: this.scope.locals,
    1032                     what: node.value
    1033                 };
    1034             } else if (node.type === 'node_op' && node.value === 'op_property') {
    1035                 res = {
    1036                     o: this.execute(node.children[0]),
    1037                     what: node.children[1]
    1038                 };
    1039             } else if (node.type === 'node_op' && node.value === 'op_extvalue') {
    1040                 res = {
    1041                     o: this.execute(node.children[0]),
    1042                     what: this.execute(node.children[1])
    1043                 };
    1044             } else {
    1045                 throw new Error('Syntax error: Invalid left-hand side of assignment.');
    1046             }
    1047
    1048             return res;
    1049         },
    1050
    1051         getLHSCompiler: function (node, js) {
    1052             var res;
    1053
    1054             if (node.type === 'node_var') {
    1055                 res = node.value;
    1056             } else if (node.type === 'node_op' && node.value === 'op_property') {
    1057                 res = [
    1058                     this.compile(node.children[0], js),
    1059                     "'" + node.children[1] + "'"
    1060                 ];
    1061             } else if (node.type === 'node_op' && node.value === 'op_extvalue') {
    1062                 res = [
    1063                     this.compile(node.children[0], js),
    1064                     node.children[1].type === 'node_const' ? node.children[1].value : this.compile(node.children[1], js)
    1065                 ];
    1066             } else {
    1067                 throw new Error('Syntax error: Invalid left-hand side of assignment.');
    1068             }
    1069
    1070             return res;
    1071         },
    1072
    1073         /**
    1074          * Executes a parse subtree.
    1075          * @param {Object} node
    1076          * @returns {Number|String|Object|Boolean} Something
    1077          * @private
    1078          */
    1079         execute: function (node) {
    1080             var ret, v, i, e, l, undef, list, ilist,
    1081                 parents = [],
    1082                 // exec fun
    1083                 fun, attr, sc;
    1084
    1085             ret = 0;
    1086
    1087             if (!node) {
    1088                 return ret;
    1089             }
    1090
    1091             this.line = node.line;
    1092             this.col = node.col;
    1093
    1094             switch (node.type) {
    1095             case 'node_op':
    1096                 switch (node.value) {
    1097                 case 'op_none':
    1098                     if (node.children[0]) {
    1099                         this.execute(node.children[0]);
    1100                     }
    1101                     if (node.children[1]) {
    1102                         ret = this.execute(node.children[1]);
    1103                     }
    1104                     break;
    1105                 case 'op_assign':
    1106                     v = this.getLHS(node.children[0]);
    1107                     this.lhs[this.scope.id] = v[1];
    1108
    1109                     if (v.o.type && v.o.elementClass && v.o.methodMap && v.what === 'label') {
    1110                         this._error('Left-hand side of assignment is read-only.');
    1111                     }
    1112
    1113                     ret = this.execute(node.children[1]);
    1114                     if (v.o !== this.scope.locals || (Type.isArray(v.o) && typeof v.what === 'number')) {
    1115                         // it is either an array component being set or a property of an object.
    1116                         this.setProp(v.o, v.what, ret);
    1117                     } else {
    1118                         // this is just a local variable inside JessieCode
    1119                         this.letvar(v.what, ret);
    1120                     }
    1121                     this.lhs[this.scope.id] = 0;
    1122                     break;
    1123                 case 'op_if':
    1124                     if (this.execute(node.children[0])) {
    1125                         ret = this.execute(node.children[1]);
    1126                     }
    1127                     break;
    1128                 case 'op_conditional':
    1129                     // fall through
    1130                 case 'op_if_else':
    1131                     if (this.execute(node.children[0])) {
    1132                         ret = this.execute(node.children[1]);
    1133                     } else {
    1134                         ret = this.execute(node.children[2]);
    1135                     }
    1136                     break;
    1137                 case 'op_while':
    1138                     while (this.execute(node.children[0])) {
    1139                         this.execute(node.children[1]);
    1140                     }
    1141                     break;
    1142                 case 'op_do':
    1143                     do {
    1144                         this.execute(node.children[0]);
    1145                     } while (this.execute(node.children[1]));
    1146                     break;
    1147                 case 'op_for':
    1148                     for (this.execute(node.children[0]); this.execute(node.children[1]); this.execute(node.children[2])) {
    1149                         this.execute(node.children[3]);
    1150                     }
    1151                     break;
    1152                 case 'op_proplst':
    1153                     if (node.children[0]) {
    1154                         this.execute(node.children[0]);
    1155                     }
    1156                     if (node.children[1]) {
    1157                         this.execute(node.children[1]);
    1158                     }
    1159                     break;
    1160                 case 'op_emptyobject':
    1161                     ret = {};
    1162                     break;
    1163                 case 'op_proplst_val':
    1164                     this.propstack.push({});
    1165                     this.propscope++;
    1166
    1167                     this.execute(node.children[0]);
    1168                     ret = this.propstack[this.propscope];
    1169
    1170                     this.propstack.pop();
    1171                     this.propscope--;
    1172                     break;
    1173                 case 'op_prop':
    1174                     // child 0: Identifier
    1175                     // child 1: Value
    1176                     this.propstack[this.propscope][node.children[0]] = this.execute(node.children[1]);
    1177                     break;
    1178                 case 'op_array':
    1179                     ret = [];
    1180                     l = node.children[0].length;
    1181
    1182                     for (i = 0; i < l; i++) {
    1183                         ret.push(this.execute(node.children[0][i]));
    1184                     }
    1185
    1186                     break;
    1187                 case 'op_extvalue':
    1188                     ret = this.execute(node.children[0]);
    1189                     i = this.execute(node.children[1]);
    1190
    1191                     if (typeof i === 'number' && Math.abs(Math.round(i) - i) < Mat.eps) {
    1192                         ret = ret[i];
    1193                     } else {
    1194                         ret = undef;
    1195                     }
    1196                     break;
    1197                 case 'op_return':
    1198                     if (this.scope === 0) {
    1199                         this._error('Unexpected return.');
    1200                     } else {
    1201                         return this.execute(node.children[0]);
    1202                     }
    1203                     break;
    1204                 case 'op_map':
    1205                     if (!node.children[1].isMath && node.children[1].type !== 'node_var') {
    1206                         this._error('execute: In a map only function calls and mathematical expressions are allowed.');
    1207                     }
    1208
    1209                     /** @ignore */
    1210                     fun = this.defineFunction(node);
    1211                     fun.isMap = true;
    1212
    1213                     ret = fun;
    1214                     break;
    1215                 case 'op_function':
    1216                     // parse the parameter list
    1217                     // after this, the parameters are in pstack
    1218
    1219                     /** @ignore */
    1220                     fun = this.defineFunction(node);
    1221                     fun.isMap = false;
    1222
    1223                     ret = fun;
    1224                     break;
    1225                 case 'op_execfun':
    1226                     // node.children:
    1227                     //   [0]: Name of the function
    1228                     //   [1]: Parameter list as a parse subtree
    1229                     //   [2]: Properties, only used in case of a create function
    1230                     this.dpstack.push([]);
    1231                     this.pscope++;
    1232
    1233                     // parameter parsing is done below
    1234                     list = node.children[1];
    1235
    1236                     // parse the properties only if given
    1237                     if (Type.exists(node.children[2])) {
    1238                         if (node.children[3]) {
    1239                             ilist = node.children[2];
    1240                             attr = {};
    1241
    1242                             for (i = 0; i < ilist.length; i++) {
    1243                                 attr = Type.deepCopy(attr, this.execute(ilist[i]), true);
    1244                             }
    1245                         } else {
    1246                             attr = this.execute(node.children[2]);
    1247                         }
    1248                     }
    1249
    1250                     // look up the variables name in the variable table
    1251                     fun = this.execute(node.children[0]);
    1252
    1253                     // determine the scope the function wants to run in
    1254                     if (fun && fun.sc) {
    1255                         sc = fun.sc;
    1256                     } else {
    1257                         sc = this;
    1258                     }
    1259
    1260                     if (!fun.creator && Type.exists(node.children[2])) {
    1261                         this._error('Unexpected value. Only element creators are allowed to have a value after the function call.');
    1262                     }
    1263
    1264                     // interpret ALL the parameters
    1265                     for (i = 0; i < list.length; i++) {
    1266                         parents[i] = this.execute(list[i]);
    1267                         //parents[i] = Type.evalSlider(this.execute(list[i]));
    1268                         this.dpstack[this.pscope].push({
    1269                             line: node.children[1][i].line,
    1270                             // SketchBin currently works only if the last column of the
    1271                             // parent position is taken. This is due to how I patched JS/CC
    1272                             // to count the lines and columns. So, ecol will do for now
    1273                             col: node.children[1][i].ecol
    1274                         });
    1275                     }
    1276
    1277                     // check for the function in the variable table
    1278                     if (typeof fun === 'function' && !fun.creator) {
    1279                         ret = fun.apply(sc, parents);
    1280                     } else if (typeof fun === 'function' && !!fun.creator) {
    1281                         e = this.line;
    1282
    1283                         // creator methods are the only ones that take properties, hence this special case
    1284                         try {
    1285                             ret = fun(parents, attr);
    1286                             ret.jcLineStart = e;
    1287                             ret.jcLineEnd = node.eline;
    1288
    1289                             for (i = e; i <= node.line; i++) {
    1290                                 this.lineToElement[i] = ret;
    1291                             }
    1292
    1293                             ret.debugParents = this.dpstack[this.pscope];
    1294                         } catch (ex) {
    1295                             this._error(ex.toString());
    1296                         }
    1297                     } else {
    1298                         this._error('Function \'' + fun + '\' is undefined.');
    1299                     }
    1300
    1301                     // clear parameter stack
    1302                     this.dpstack.pop();
    1303                     this.pscope--;
    1304                     break;
    1305                 case 'op_property':
    1306                     e = this.execute(node.children[0]);
    1307                     v = node.children[1];
    1308
    1309                     ret = this.resolveProperty(e, v, false);
    1310
    1311                     // set the scope, in case this is a method the user wants to call
    1312                     if (Type.exists(ret)) {
    1313                         ret.sc = e;
    1314                     }
    1315
    1316                     break;
    1317                 case 'op_use':
    1318                     this._warn('Use of the \'use\' operator is deprecated.');
    1319                     this.use(node.children[0].toString());
    1320                     break;
    1321                 case 'op_delete':
    1322                     this._warn('Use of the \'delete\' operator is deprecated. Please use the remove() function.');
    1323                     v = this.getvar(node.children[0]);
    1324                     ret = this.del(v);
    1325                     break;
    1326                 case 'op_equ':
    1327                     // == is intentional
    1328                     /*jslint eqeq:true*/
    1329                     ret = this.execute(node.children[0]) == this.execute(node.children[1]);
    1330                     /*jslint eqeq:false*/
    1331                     break;
    1332                 case 'op_neq':
    1333                     // != is intentional
    1334                     /*jslint eqeq:true*/
    1335                     ret = this.execute(node.children[0]) != this.execute(node.children[1]);
    1336                     /*jslint eqeq:true*/
    1337                     break;
    1338                 case 'op_approx':
    1339                     ret = Math.abs(this.execute(node.children[0]) - this.execute(node.children[1])) < Mat.eps;
    1340                     break;
    1341                 case 'op_grt':
    1342                     ret = this.execute(node.children[0]) > this.execute(node.children[1]);
    1343                     break;
    1344                 case 'op_lot':
    1345                     ret = this.execute(node.children[0]) < this.execute(node.children[1]);
    1346                     break;
    1347                 case 'op_gre':
    1348                     ret = this.execute(node.children[0]) >= this.execute(node.children[1]);
    1349                     break;
    1350                 case 'op_loe':
    1351                     ret = this.execute(node.children[0]) <= this.execute(node.children[1]);
    1352                     break;
    1353                 case 'op_or':
    1354                     ret = this.execute(node.children[0]) || this.execute(node.children[1]);
    1355                     break;
    1356                 case 'op_and':
    1357                     ret = this.execute(node.children[0]) && this.execute(node.children[1]);
    1358                     break;
    1359                 case 'op_not':
    1360                     ret = !this.execute(node.children[0]);
    1361                     break;
    1362                 case 'op_add':
    1363                     ret = this.add(this.execute(node.children[0]), this.execute(node.children[1]));
    1364                     break;
    1365                 case 'op_sub':
    1366                     ret = this.sub(this.execute(node.children[0]), this.execute(node.children[1]));
    1367                     break;
    1368                 case 'op_div':
    1369                     ret = this.div(this.execute(node.children[0]), this.execute(node.children[1]));
    1370                     break;
    1371                 case 'op_mod':
    1372                     // use mathematical modulo, JavaScript implements the symmetric modulo.
    1373                     ret = this.mod(this.execute(node.children[0]), this.execute(node.children[1]), true);
    1374                     break;
    1375                 case 'op_mul':
    1376                     ret = this.mul(this.execute(node.children[0]), this.execute(node.children[1]));
    1377                     break;
    1378                 case 'op_exp':
    1379                     ret = this.pow(this.execute(node.children[0]),  this.execute(node.children[1]));
    1380                     break;
    1381                 case 'op_neg':
    1382                     ret = this.neg(this.execute(node.children[0]));
    1383                     break;
    1384                 }
    1385                 break;
    1386
    1387             case 'node_var':
    1388                 ret = this.getvar(node.value);
    1389                 break;
    1390
    1391             case 'node_const':
    1392                 ret = Number(node.value);
    1393                 break;
    1394
    1395             case 'node_const_bool':
    1396                 ret = node.value;
    1397                 break;
    1398
    1399             case 'node_str':
    1400                 //ret = node.value.replace(/\\'/, "'").replace(/\\"/, '"').replace(/\\\\/, '\\');
    1401                 /*jslint regexp:true*/
    1402                 ret = node.value.replace(/\\(.)/, '$1');
    1403                 /*jslint regexp:false*/
    1404                 break;
    1405             }
    1406
    1407             return ret;
    1408         },
    1409
    1410         /**
    1411          * Compiles a parse tree back to JessieCode.
    1412          * @param {Object} node
    1413          * @param {Boolean} [js=false] Compile either to JavaScript or back to JessieCode (required for the UI).
    1414          * @returns Something
    1415          * @private
    1416          */
    1417         compile: function (node, js) {
    1418             var e, i, list, scope,
    1419                 ret = '';
    1420
    1421             if (!Type.exists(js)) {
    1422                 js = false;
    1423             }
    1424
    1425             if (!node) {
    1426                 return ret;
    1427             }
    1428
    1429             switch (node.type) {
    1430             case 'node_op':
    1431                 switch (node.value) {
    1432                 case 'op_none':
    1433                     if (node.children[0]) {
    1434                         ret = this.compile(node.children[0], js);
    1435                     }
    1436                     if (node.children[1]) {
    1437                         ret += this.compile(node.children[1], js);
    1438                     }
    1439                     break;
    1440                 case 'op_assign':
    1441                     //e = this.compile(node.children[0], js);
    1442                     if (js) {
    1443                         e = this.getLHSCompiler(node.children[0], js);
    1444                         if (Type.isArray(e)) {
    1445                             ret = '$jc$.setProp(' + e[0] + ', ' + e[1] + ', ' + this.compile(node.children[1], js) + ');\n';
    1446                         } else {
    1447                             if (this.isLocalVariable(e) !== this.scope) {
    1448                                 this.scope.locals[e] = true;
    1449                             }
    1450                             ret = '$jc$.scopes[' + this.scope.id + '].locals[\'' + e + '\'] = ' + this.compile(node.children[1], js) + ';\n';
    1451                         }
    1452                     } else {
    1453                         e = this.compile(node.children[0]);
    1454                         ret = e + ' = ' + this.compile(node.children[1], js) + ';\n';
    1455                     }
    1456                     break;
    1457                 case 'op_if':
    1458                     ret = ' if (' + this.compile(node.children[0], js) + ') ' + this.compile(node.children[1], js);
    1459                     break;
    1460                 case 'op_if_else':
    1461                     ret = ' if (' + this.compile(node.children[0], js) + ')' + this.compile(node.children[1], js);
    1462                     ret += ' else ' + this.compile(node.children[2], js);
    1463                     break;
    1464                 case 'op_conditional':
    1465                     ret = '((' + this.compile(node.children[0], js) + ')?(' + this.compile(node.children[1], js);
    1466                     ret += '):(' + this.compile(node.children[2], js) + '))';
    1467                     break;
    1468                 case 'op_while':
    1469                     ret = ' while (' + this.compile(node.children[0], js) + ') {\n' + this.compile(node.children[1], js) + '}\n';
    1470                     break;
    1471                 case 'op_do':
    1472                     ret = ' do {\n' + this.compile(node.children[0], js) + '} while (' + this.compile(node.children[1], js) + ');\n';
    1473                     break;
    1474                 case 'op_for':
    1475                     ret = ' for (' + this.compile(node.children[0], js) + '; ' + this.compile(node.children[1], js) + '; ' + this.compile(node.children[2], js) + ') {\n' + this.compile(node.children[3], js) + '\n}\n';
    1476                     break;
    1477                 case 'op_proplst':
    1478                     if (node.children[0]) {
    1479                         ret = this.compile(node.children[0], js) + ', ';
    1480                     }
    1481
    1482                     ret += this.compile(node.children[1], js);
    1483                     break;
    1484                 case 'op_prop':
    1485                     // child 0: Identifier
    1486                     // child 1: Value
    1487                     ret = node.children[0] + ': ' + this.compile(node.children[1], js);
    1488                     break;
    1489                 case 'op_emptyobject':
    1490                     ret = js ? '{}' : '<< >>';
    1491                     break;
    1492                 case 'op_proplst_val':
    1493                     ret = this.compile(node.children[0], js);
    1494                     break;
    1495                 case 'op_array':
    1496                     list = [];
    1497                     for (i = 0; i < node.children[0].length; i++) {
    1498                         list.push(this.compile(node.children[0][i], js));
    1499                     }
    1500                     ret = '[' + list.join(', ') + ']';
    1501                     break;
    1502                 case 'op_extvalue':
    1503                     ret = this.compile(node.children[0], js) + '[' + this.compile(node.children[1], js) + ']';
    1504                     break;
    1505                 case 'op_return':
    1506                     ret = ' return ' + this.compile(node.children[0], js) + ';\n';
    1507                     break;
    1508                 case 'op_map':
    1509                     if (!node.children[1].isMath && node.children[1].type !== 'node_var') {
    1510                         this._error('compile: In a map only function calls and mathematical expressions are allowed.');
    1511                     }
    1512
    1513                     list = node.children[0];
    1514                     if (js) {
    1515                         ret = ' $jc$.makeMap(function (' + list.join(', ') + ') { return ' + this.compile(node.children[1], js) + '; })';
    1516                     } else {
    1517                         ret = 'map (' + list.join(', ') + ') -> ' + this.compile(node.children[1], js);
    1518                     }
    1519
    1520                     break;
    1521                 case 'op_function':
    1522                     list = node.children[0];
    1523                     scope = this.pushScope(list);
    1524                     if (js) {
    1525                         ret = this.functionCodeJS(node);
    1526                     } else {
    1527                         ret = ' function (' + list.join(', ') + ') ' + this.compile(node.children[1], js);
    1528                     }
    1529                     this.popScope();
    1530                     break;
    1531                 case 'op_execfunmath':
    1532                     console.log('TODO');
    1533                     ret = '-1';
    1534                     break;
    1535                 case 'op_execfun':
    1536                     // parse the properties only if given
    1537                     if (node.children[2]) {
    1538                         list = [];
    1539                         for (i = 0; i < node.children[2].length; i++) {
    1540                             list.push(this.compile(node.children[2][i], js));
    1541                         }
    1542
    1543                         if (js) {
    1544                             e = '$jc$.mergeAttributes(' + list.join(', ') + ')';
    1545                         }
    1546                     }
    1547                     node.children[0].withProps = !!node.children[2];
    1548                     list = [];
    1549                     for (i = 0; i < node.children[1].length; i++) {
    1550                         list.push(this.compile(node.children[1][i], js));
    1551                     }
    1552                     ret = this.compile(node.children[0], js) + '(' + list.join(', ') + (node.children[2] && js ? ', ' + e : '') + ')' + (node.children[2] && !js ? e : '');
    1553
    1554                     // save us a function call when compiled to javascript
    1555                     if (js && node.children[0].value === '$') {
    1556                         ret = '$jc$.board.objects[' + this.compile(node.children[1][0], js) + ']';
    1557                     }
    1558                     break;
    1559                 case 'op_property':
    1560                     if (js && node.children[1] !== 'X' && node.children[1] !== 'Y') {
    1561                         ret = '$jc$.resolveProperty(' + this.compile(node.children[0], js) + ', \'' + node.children[1] + '\', true)';
    1562                     } else {
    1563                         ret = this.compile(node.children[0], js) + '.' + node.children[1];
    1564                     }
    1565                     break;
    1566                 case 'op_use':
    1567                     this._warn('Use of the \'use\' operator is deprecated.');
    1568                     if (js) {
    1569                         ret = '$jc$.use(\'';
    1570                     } else {
    1571                         ret = 'use(\'';
    1572                     }
    1573
    1574                     ret += node.children[0].toString() + '\');';
    1575                     break;
    1576                 case 'op_delete':
    1577                     this._warn('Use of the \'delete\' operator is deprecated. Please use the remove() function.');
    1578                     if (js) {
    1579                         ret = '$jc$.del(';
    1580                     } else {
    1581                         ret = 'remove(';
    1582                     }
    1583
    1584                     ret += this.compile(node.children[0], js) + ')';
    1585                     break;
    1586                 case 'op_equ':
    1587                     ret = '(' + this.compile(node.children[0], js) + ' == ' + this.compile(node.children[1], js) + ')';
    1588                     break;
    1589                 case 'op_neq':
    1590                     ret = '(' + this.compile(node.children[0], js) + ' != ' + this.compile(node.children[1], js) + ')';
    1591                     break;
    1592                 case 'op_approx':
    1593                     ret = '(' + this.compile(node.children[0], js) + ' ~= ' + this.compile(node.children[1], js) + ')';
    1594                     break;
    1595                 case 'op_grt':
    1596                     ret = '(' + this.compile(node.children[0], js) + ' > ' + this.compile(node.children[1], js) + ')';
    1597                     break;
    1598                 case 'op_lot':
    1599                     ret = '(' + this.compile(node.children[0], js) + ' < ' + this.compile(node.children[1], js) + ')';
    1600                     break;
    1601                 case 'op_gre':
    1602                     ret = '(' + this.compile(node.children[0], js) + ' >= ' + this.compile(node.children[1], js) + ')';
    1603                     break;
    1604                 case 'op_loe':
    1605                     ret = '(' + this.compile(node.children[0], js) + ' <= ' + this.compile(node.children[1], js) + ')';
    1606                     break;
    1607                 case 'op_or':
    1608                     ret = '(' + this.compile(node.children[0], js) + ' || ' + this.compile(node.children[1], js) + ')';
    1609                     break;
    1610                 case 'op_and':
    1611                     ret = '(' + this.compile(node.children[0], js) + ' && ' + this.compile(node.children[1], js) + ')';
    1612                     break;
    1613                 case 'op_not':
    1614                     ret = '!(' + this.compile(node.children[0], js) + ')';
    1615                     break;
    1616                 case 'op_add':
    1617                     if (js) {
    1618                         ret = '$jc$.add(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ')';
    1619                     } else {
    1620                         ret = '(' + this.compile(node.children[0], js) + ' + ' + this.compile(node.children[1], js) + ')';
    1621                     }
    1622                     break;
    1623                 case 'op_sub':
    1624                     if (js) {
    1625                         ret = '$jc$.sub(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ')';
    1626                     } else {
    1627                         ret = '(' + this.compile(node.children[0], js) + ' - ' + this.compile(node.children[1], js) + ')';
    1628                     }
    1629                     break;
    1630                 case 'op_div':
    1631                     if (js) {
    1632                         ret = '$jc$.div(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ')';
    1633                     } else {
    1634                         ret = '(' + this.compile(node.children[0], js) + ' / ' + this.compile(node.children[1], js) + ')';
    1635                     }
    1636                     break;
    1637                 case 'op_mod':
    1638                     if (js) {
    1639                         ret = '$jc$.mod(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ', true)';
    1640                     } else {
    1641                         ret = '(' + this.compile(node.children[0], js) + ' % ' + this.compile(node.children[1], js) + ')';
    1642                     }
    1643                     break;
    1644                 case 'op_mul':
    1645                     if (js) {
    1646                         ret = '$jc$.mul(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ')';
    1647                     } else {
    1648                         ret = '(' + this.compile(node.children[0], js) + ' * ' + this.compile(node.children[1], js) + ')';
    1649                     }
    1650                     break;
    1651                 case 'op_exp':
    1652                     if (js) {
    1653                         ret = '$jc$.pow(' + this.compile(node.children[0], js) + ', ' + this.compile(node.children[1], js) + ')';
    1654                     } else {
    1655                         ret = '(' + this.compile(node.children[0], js) + '^' + this.compile(node.children[1], js) + ')';
    1656                     }
    1657                     break;
    1658                 case 'op_neg':
    1659                     if (js) {
    1660                         ret = '$jc$.neg(' + this.compile(node.children[0], js) + ')';
    1661                     } else {
    1662                         ret = '(-' + this.compile(node.children[0], js) + ')';
    1663                     }
    1664                     break;
    1665                 }
    1666                 break;
    1667
    1668             case 'node_var':
    1669                 if (js) {
    1670                     ret = this.getvarJS(node.value, false, node.withProps);
    1671                 } else {
    1672                     ret = node.value;
    1673                 }
    1674                 break;
    1675
    1676             case 'node_const':
    1677                 ret = node.value;
    1678                 break;
    1679
    1680             case 'node_const_bool':
    1681                 ret = node.value;
    1682                 break;
    1683
    1684             case 'node_str':
    1685                 ret = '\'' + node.value + '\'';
    1686                 break;
    1687             }
    1688
    1689             if (node.needsBrackets) {
    1690                 ret = '{\n' + ret + '}\n';
    1691             }
    1692
    1693             return ret;
    1694         },
    1695
    1696         /**
    1697          * This is used as the global X() function.
    1698          * @param {JXG.Point|JXG.Text} e
    1699          * @returns {Number}
    1700          */
    1701         X: function (e) {
    1702             return e.X();
    1703         },
    1704
    1705         /**
    1706          * This is used as the global Y() function.
    1707          * @param {JXG.Point|JXG.Text} e
    1708          * @returns {Number}
    1709          */
    1710         Y: function (e) {
    1711             return e.Y();
    1712         },
    1713
    1714         /**
    1715          * This is used as the global V() function.
    1716          * @param {Glider|Slider} e
    1717          * @returns {Number}
    1718          */
    1719         V: function (e) {
    1720             return e.Value();
    1721         },
    1722
    1723         /**
    1724          * This is used as the global L() function.
    1725          * @param {JXG.Line} e
    1726          * @returns {Number}
    1727          */
    1728         L: function (e) {
    1729             return e.L();
    1730         },
    1731
    1732         /**
    1733          * This is used as the global dist() function.
    1734          * @param {JXG.Point} p1
    1735          * @param {JXG.Point} p2
    1736          * @returns {Number}
    1737          */
    1738         dist: function (p1, p2) {
    1739             if (!Type.exists(p1) || !Type.exists(p1.Dist)) {
    1740                 this._error('Error: Can\'t calculate distance.');
    1741             }
    1742
    1743             return p1.Dist(p2);
    1744         },
    1745
    1746         /**
    1747          * + operator implementation
    1748          * @param {Number|Array|JXG.Point} a
    1749          * @param {Number|Array|JXG.Point} b
    1750          * @returns {Number|Array}
    1751          */
    1752         add: function (a, b) {
    1753             var i, len, res;
    1754
    1755             a = Type.evalSlider(a);
    1756             b = Type.evalSlider(b);
    1757
    1758             if (Type.isArray(a) && Type.isArray(b)) {
    1759                 len = Math.min(a.length, b.length);
    1760                 res = [];
    1761
    1762                 for (i = 0; i < len; i++) {
    1763                     res[i] = a[i] + b[i];
    1764                 }
    1765             } else if (Type.isNumber(a) && Type.isNumber(b)) {
    1766                 res = a + b;
    1767             } else if (Type.isString(a) || Type.isString(b)) {
    1768                 res = a.toString() + b.toString();
    1769             } else {
    1770                 this._error('Operation + not defined on operands ' + typeof a + ' and ' + typeof b);
    1771             }
    1772
    1773             return res;
    1774         },
    1775
    1776         /**
    1777          * - operator implementation
    1778          * @param {Number|Array|JXG.Point} a
    1779          * @param {Number|Array|JXG.Point} b
    1780          * @returns {Number|Array}
    1781          */
    1782         sub: function (a, b) {
    1783             var i, len, res;
    1784
    1785             a = Type.evalSlider(a);
    1786             b = Type.evalSlider(b);
    1787
    1788             if (Type.isArray(a) && Type.isArray(b)) {
    1789                 len = Math.min(a.length, b.length);
    1790                 res = [];
    1791
    1792                 for (i = 0; i < len; i++) {
    1793                     res[i] = a[i] - b[i];
    1794                 }
    1795             } else if (Type.isNumber(a) && Type.isNumber(b)) {
    1796                 res = a - b;
    1797             } else {
    1798                 this._error('Operation - not defined on operands ' + typeof a + ' and ' + typeof b);
    1799             }
    1800
    1801             return res;
    1802         },
    1803
    1804         /**
    1805          * unary - operator implementation
    1806          * @param {Number|Array|JXG.Point} a
    1807          * @returns {Number|Array}
    1808          */
    1809         neg: function (a) {
    1810             var i, len, res;
    1811
    1812             a = Type.evalSlider(a);
    1813
    1814             if (Type.isArray(a)) {
    1815                 len = a.length;
    1816                 res = [];
    1817
    1818                 for (i = 0; i < len; i++) {
    1819                     res[i] = -a[i];
    1820                 }
    1821             } else if (Type.isNumber(a)) {
    1822                 res = -a;
    1823             } else {
    1824                 this._error('Unary operation - not defined on operand ' + typeof a);
    1825             }
    1826
    1827             return res;
    1828         },
    1829
    1830
    1831         /**
    1832          * Multiplication of vectors and numbers
    1833          * @param {Number|Array} a
    1834          * @param {Number|Array} b
    1835          * @returns {Number|Array} (Inner) product of the given input values.
    1836          */
    1837         mul: function (a, b) {
    1838             var i, len, res;
    1839
    1840             a = Type.evalSlider(a);
    1841             b = Type.evalSlider(b);
    1842
    1843             if (Type.isArray(a) && Type.isNumber(b)) {
    1844                 // swap b and a
    1845                 i = a;
    1846                 a = b;
    1847                 b = a;
    1848             }
    1849
    1850             if (Type.isArray(a) && Type.isArray(b)) {
    1851                 len = Math.min(a.length, b.length);
    1852                 res = Mat.innerProduct(a, b, len);
    1853             } else if (Type.isNumber(a) && Type.isArray(b)) {
    1854                 len = b.length;
    1855                 res = [];
    1856
    1857                 for (i = 0; i < len; i++) {
    1858                     res[i] = a * b[i];
    1859                 }
    1860             } else if (Type.isNumber(a) && Type.isNumber(b)) {
    1861                 res = a * b;
    1862             } else {
    1863                 this._error('Operation * not defined on operands ' + typeof a + ' and ' + typeof b);
    1864             }
    1865
    1866             return res;
    1867         },
    1868
    1869         /**
    1870          * Implementation of the / operator.
    1871          * @param {Number|Array} a
    1872          * @param {Number} b
    1873          * @returns {Number|Array}
    1874          */
    1875         div: function (a, b) {
    1876             var i, len, res;
    1877
    1878             a = Type.evalSlider(a);
    1879             b = Type.evalSlider(b);
    1880
    1881             if (Type.isArray(a) && Type.isNumber(b)) {
    1882                 len = a.length;
    1883                 res = [];
    1884
    1885                 for (i = 0; i < len; i++) {
    1886                     res[i] = a[i] / b;
    1887                 }
    1888             } else if (Type.isNumber(a) && Type.isNumber(b)) {
    1889                 res = a / b;
    1890             } else {
    1891                 this._error('Operation * not defined on operands ' + typeof a + ' and ' + typeof b);
    1892             }
    1893
    1894             return res;
    1895         },
    1896
    1897         /**
    1898          * Implementation of the % operator.
    1899          * @param {Number|Array} a
    1900          * @param {Number} b
    1901          * @returns {Number|Array}
    1902          */
    1903         mod: function (a, b) {
    1904             var i, len, res;
    1905
    1906             a = Type.evalSlider(a);
    1907             b = Type.evalSlider(b);
    1908
    1909             if (Type.isArray(a) && Type.isNumber(b)) {
    1910                 len = a.length;
    1911                 res = [];
    1912
    1913                 for (i = 0; i < len; i++) {
    1914                     res[i] = Mat.mod(a[i], b, true);
    1915                 }
    1916             } else if (Type.isNumber(a) && Type.isNumber(b)) {
    1917                 res = Mat.mod(a, b, true);
    1918             } else {
    1919                 this._error('Operation * not defined on operands ' + typeof a + ' and ' + typeof b);
    1920             }
    1921
    1922             return res;
    1923         },
    1924
    1925         /**
    1926          * Pow function wrapper to allow direct usage of sliders.
    1927          * @param {Number|Slider} a
    1928          * @param {Number|Slider} b
    1929          * @returns {Number}
    1930          */
    1931         pow: function (a, b) {
    1932             a = Type.evalSlider(a);
    1933             b = Type.evalSlider(b);
    1934
    1935             return Math.pow(a, b);
    1936         },
    1937
    1938         DDD: function(f) {
    1939             console.log('Dummy derivative function. This should never appear!');
    1940         },
    1941
    1942         /**
    1943          * Implementation of the ?: operator
    1944          * @param {Boolean} cond Condition
    1945          * @param {*} v1
    1946          * @param {*} v2
    1947          * @returns {*} Either v1 or v2.
    1948          */
    1949         ifthen: function (cond, v1, v2) {
    1950             if (cond) {
    1951                 return v1;
    1952             }
    1953
    1954             return v2;
    1955         },
    1956
    1957         /**
    1958          * Implementation of the delete() builtin function
    1959          * @param {JXG.GeometryElement} element
    1960          */
    1961         del: function (element) {
    1962             if (typeof element === 'object' && JXG.exists(element.type) && JXG.exists(element.elementClass)) {
    1963                 this.board.removeObject(element);
    1964             }
    1965         },
    1966
    1967         /**
    1968          * Implementation of the use() builtin function
    1969          * @param {String} board
    1970          */
    1971         use: function (board) {
    1972             var b, ref,
    1973                 found = false;
    1974
    1975             if (typeof board === 'string') {
    1976                 // search all the boards for the one with the appropriate container div
    1977                 for (b in JXG.boards) {
    1978                     if (JXG.boards.hasOwnProperty(b) && JXG.boards[b].container === board) {
    1979                         ref = JXG.boards[b];
    1980                         found = true;
    1981                         break;
    1982                     }
    1983                 }
    1984             } else {
    1985                 ref = board;
    1986                 found = true;
    1987             }
    1988
    1989             if (found) {
    1990                 this.board = ref;
    1991                 this.builtIn.$board = ref;
    1992                 this.builtIn.$board.src = '$jc$.board';
    1993             } else {
    1994                 this._error('Board \'' + board + '\' not found!');
    1995             }
    1996         },
    1997
    1998         /**
    1999          * Find the first symbol to the given value from the given scope upwards.
    2000          * @param v Value
    2001          * @param {Number} [scope=-1] The scope, default is to start with current scope (-1).
    2002          * @returns {Array} An array containing the symbol and the scope if a symbol could be found,
    2003          * an empty array otherwise;
    2004          */
    2005         findSymbol: function (v, scope) {
    2006             var i, s;
    2007
    2008             scope = Type.def(scope, -1);
    2009
    2010             if (scope === -1) {
    2011                 s = this.scope;
    2012             } else {
    2013                 s = this.scopes[scope];
    2014             }
    2015
    2016             while (s !== null) {
    2017                 for (i in s.locals) {
    2018                     if (s.locals.hasOwnProperty(i) && s.locals[i] === v) {
    2019                         return [i, s];
    2020                     }
    2021                 }
    2022
    2023                 s = s.previous;
    2024             }
    2025
    2026             return [];
    2027         },
    2028
    2029         /**
    2030          * Import modules into a JessieCode script.
    2031          * @param {String} module
    2032          */
    2033         importModule: function (module) {
    2034             return priv.modules[module.toLowerCase()];
    2035         },
    2036
    2037         /**
    2038          * Defines built in methods and constants.
    2039          * @returns {Object} BuiltIn control object
    2040          */
    2041         defineBuiltIn: function () {
    2042             var that = this,
    2043                 builtIn = {
    2044                     PI: Math.PI,
    2045                     EULER: Math.E,
    2046                     X: that.X,
    2047                     Y: that.Y,
    2048                     V: that.V,
    2049                     L: that.L,
    2050                     dist: that.dist,
    2051                     rad: Geometry.rad,
    2052                     deg: Geometry.trueAngle,
    2053                     factorial: Mat.factorial,
    2054                     trunc: Type.trunc,
    2055                     log: Mat.log,
    2056                     ln: Math.log,
    2057                     log10: Mat.log10,
    2058                     lg: Mat.log10,
    2059                     log2: Mat.log2,
    2060                     lb: Mat.log2,
    2061                     ld: Mat.log2,
    2062                     cosh: Mat.cosh,
    2063                     sinh: Mat.sinh,
    2064                     IfThen: that.ifthen,
    2065                     'import': that.importModule,
    2066                     'use': that.use,
    2067                     'remove': that.del,
    2068                     '$': that.getElementById,
    2069                     '$board': that.board,
    2070                     '$log': that.log,
    2071                     D: that.DDD
    2072                 };
    2073
    2074             // special scopes for factorial, deg, and rad
    2075             builtIn.rad.sc = Geometry;
    2076             builtIn.deg.sc = Geometry;
    2077             builtIn.factorial.sc = Mat;
    2078
    2079             // set the javascript equivalent for the builtIns
    2080             // some of the anonymous functions should be replaced by global methods later on
    2081             // EULER and PI don't get a source attribute - they will be lost anyways and apparently
    2082             // some browser will throw an exception when a property is assigned to a primitive value.
    2083             builtIn.X.src = '$jc$.X';
    2084             builtIn.Y.src = '$jc$.Y';
    2085             builtIn.V.src = '$jc$.V';
    2086             builtIn.L.src = '$jc$.L';
    2087             builtIn.dist.src = '$jc$.dist';
    2088             builtIn.rad.src = 'JXG.Math.Geometry.rad';
    2089             builtIn.deg.src = 'JXG.Math.Geometry.trueAngle';
    2090             builtIn.factorial.src = 'JXG.Math.factorial';
    2091             builtIn.trunc.src = 'JXG.trunc';
    2092             builtIn.ln.src = 'Math.log';
    2093             builtIn.log10.src = 'JXG.Math.log10';
    2094             builtIn.lg.src = 'JXG.Math.log10';
    2095             builtIn.log2.src = 'JXG.Math.log2';
    2096             builtIn.lb.src = 'JXG.Math.log2';
    2097             builtIn.ld.src = 'JXG.Math.log2';
    2098             builtIn.cosh.src = 'JXG.Math.cosh';
    2099             builtIn.sinh.src = 'JXG.Math.sinh';
    2100             builtIn['import'].src = '$jc$.importModule';
    2101             builtIn.use.src = '$jc$.use';
    2102             builtIn.remove.src = '$jc$.del';
    2103             builtIn.IfThen.src = '$jc$.ifthen';
    2104             // usually unused, see node_op > op_execfun
    2105             builtIn.$.src = '(function (n) { return $jc$.board.select(n); })';
    2106             if (builtIn.$board) {
    2107                 builtIn.$board.src = '$jc$.board';
    2108             }
    2109             builtIn.$log.src = '$jc$.log';
    2110
    2111             return builtIn;
    2112         },
    2113
    2114         /**
    2115          * Output a debugging message. Uses debug console, if available. Otherwise an HTML element with the
    2116          * id "debug" and an innerHTML property is used.
    2117          * @param {String} log
    2118          * @private
    2119          */
    2120         _debug: function (log) {
    2121             if (typeof console === 'object') {
    2122                 console.log(log);
    2123             } else if (Env.isBrowser && document && document.getElementById('debug') !== null) {
    2124                 document.getElementById('debug').innerHTML += log + '<br />';
    2125             }
    2126         },
    2127
    2128         /**
    2129          * Throws an exception with the given error message.
    2130          * @param {String} msg Error message
    2131          */
    2132         _error: function (msg) {
    2133             var e = new Error('Error(' + this.line + '): ' + msg);
    2134             e.line = this.line;
    2135             throw e;
    2136         },
    2137
    2138         /**
    2139          * Output a warning message using {@link JXG#debug} and precedes the message with "Warning: ".
    2140          * @param {String} msg
    2141          */
    2142         _warn: function (msg) {
    2143             if (typeof console === 'object') {
    2144                 console.log('Warning(' + this.line + '): ' + msg);
    2145             } else if (Env.isBrowser && document && document.getElementById(this.warnLog) !== null) {
    2146                 document.getElementById(this.warnLog).innerHTML += 'Warning(' + this.line + '): ' + msg + '<br />';
    2147             }
    2148         },
    2149
    2150         _log: function (msg) {
    2151             if (typeof window !== 'object' && typeof self === 'object' && self.postMessage) {
    2152                 self.postMessage({type: 'log', msg: 'Log: ' + msg.toString()});
    2153             } else {
    2154                 console.log('Log: ', arguments);
    2155             }
    2156         }
    2157
    2158     });
    2159
    2160 /* parser generated by jison 0.4.18 */
    2161 /*
    2162   Returns a Parser object of the following structure:
    2163
    2164   Parser: {
    2165     yy: {}
    2166   }
    2167
    2168   Parser.prototype: {
    2169     yy: {},
    2170     trace: function(),
    2171     symbols_: {associative list: name ==> number},
    2172     terminals_: {associative list: number ==> name},
    2173     productions_: [...],
    2174     performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
    2175     table: [...],
    2176     defaultActions: {...},
    2177     parseError: function(str, hash),
    2178     parse: function(input),
    2179
    2180     lexer: {
    2181         EOF: 1,
    2182         parseError: function(str, hash),
    2183         setInput: function(input),
    2184         input: function(),
    2185         unput: function(str),
    2186         more: function(),
    2187         less: function(n),
    2188         pastInput: function(),
    2189         upcomingInput: function(),
    2190         showPosition: function(),
    2191         test_match: function(regex_match_array, rule_index),
    2192         next: function(),
    2193         lex: function(),
    2194         begin: function(condition),
    2195         popState: function(),
    2196         _currentRules: function(),
    2197         topState: function(),
    2198         pushState: function(condition),
    2199
    2200         options: {
    2201             ranges: boolean           (optional: true ==> token location info will include a .range[] member)
    2202             flex: boolean             (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
    2203             backtrack_lexer: boolean  (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
    2204         },
    2205
    2206         performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
    2207         rules: [...],
    2208         conditions: {associative list: name ==> set},
    2209     }
    2210   }
    2211
    2212
    2213   token location info (@$, _$, etc.): {
    2214     first_line: n,
    2215     last_line: n,
    2216     first_column: n,
    2217     last_column: n,
    2218     range: [start_number, end_number]       (where the numbers are indexes into the input string, regular zero-based)
    2219   }
    2220
    2221
    2222   the parseError function receives a 'hash' object with these members for lexer and parser errors: {
    2223     text:        (matched text)
    2224     token:       (the produced terminal token, if any)
    2225     line:        (yylineno)
    2226   }
    2227   while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
    2228     loc:         (yylloc)
    2229     expected:    (string describing the set of expected tokens)
    2230     recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
    2231   }
    2232 */
    2233 var parser = (function(){
    2234 var o=function(k,v,o,l){for(o=o||{},l=k.length;l--;o[k[l]]=v);return o},$V0=[2,14],$V1=[1,13],$V2=[1,37],$V3=[1,14],$V4=[1,15],$V5=[1,21],$V6=[1,16],$V7=[1,17],$V8=[1,33],$V9=[1,18],$Va=[1,19],$Vb=[1,12],$Vc=[1,59],$Vd=[1,60],$Ve=[1,58],$Vf=[1,46],$Vg=[1,48],$Vh=[1,49],$Vi=[1,50],$Vj=[1,51],$Vk=[1,52],$Vl=[1,53],$Vm=[1,54],$Vn=[1,45],$Vo=[1,38],$Vp=[1,39],$Vq=[5,7,8,14,15,16,17,19,20,21,23,26,27,50,51,58,65,74,75,76,77,78,79,80,82,91,93],$Vr=[5,7,8,12,14,15,16,17,19,20,21,23,26,27,50,51,58,65,74,75,76,77,78,79,80,82,91,93],$Vs=[8,10,16,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,57,64,65,66,83,86],$Vt=[2,48],$Vu=[1,72],$Vv=[10,16,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,57,66,83,86],$Vw=[1,78],$Vx=[8,10,16,32,34,35,37,41,42,43,45,46,47,48,50,51,53,54,55,57,64,65,66,83,86],$Vy=[1,82],$Vz=[8,10,16,32,34,35,37,39,45,46,47,48,50,51,53,54,55,57,64,65,66,83,86],$VA=[1,83],$VB=[1,84],$VC=[1,85],$VD=[8,10,16,32,34,35,37,39,41,42,43,50,51,53,54,55,57,64,65,66,83,86],$VE=[1,89],$VF=[1,90],$VG=[1,91],$VH=[1,92],$VI=[1,97],$VJ=[8,10,16,32,34,35,37,39,41,42,43,45,46,47,48,53,54,55,57,64,65,66,83,86],$VK=[1,103],$VL=[1,104],$VM=[8,10,16,32,34,35,37,39,41,42,43,45,46,47,48,50,51,57,64,65,66,83,86],$VN=[1,105],$VO=[1,106],$VP=[1,107],$VQ=[1,126],$VR=[1,139],$VS=[83,86],$VT=[1,149],$VU=[10,66,86],$VV=[8,10,16,20,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,57,64,65,66,82,83,86],$VW=[1,166],$VX=[10,86];
    2235 var parser = {trace: function trace() { },
    2236 yy: {},
    2237 symbols_: {"error":2,"Program":3,"StatementList":4,"EOF":5,"IfStatement":6,"IF":7,"(":8,"Expression":9,")":10,"Statement":11,"ELSE":12,"LoopStatement":13,"WHILE":14,"FOR":15,";":16,"DO":17,"UnaryStatement":18,"USE":19,"IDENTIFIER":20,"DELETE":21,"ReturnStatement":22,"RETURN":23,"EmptyStatement":24,"StatementBlock":25,"{":26,"}":27,"ExpressionStatement":28,"AssignmentExpression":29,"ConditionalExpression":30,"LeftHandSideExpression":31,"=":32,"LogicalORExpression":33,"?":34,":":35,"LogicalANDExpression":36,"||":37,"EqualityExpression":38,"&&":39,"RelationalExpression":40,"==":41,"!=":42,"~=":43,"AdditiveExpression":44,"<":45,">":46,"<=":47,">=":48,"MultiplicativeExpression":49,"+":50,"-":51,"UnaryExpression":52,"*":53,"/":54,"%":55,"ExponentExpression":56,"^":57,"!":58,"MemberExpression":59,"CallExpression":60,"PrimaryExpression":61,"FunctionExpression":62,"MapExpression":63,".":64,"[":65,"]":66,"BasicLiteral":67,"ObjectLiteral":68,"ArrayLiteral":69,"NullLiteral":70,"BooleanLiteral":71,"StringLiteral":72,"NumberLiteral":73,"NULL":74,"TRUE":75,"FALSE":76,"STRING":77,"NUMBER":78,"NAN":79,"INFINITY":80,"ElementList":81,"<<":82,">>":83,"PropertyList":84,"Property":85,",":86,"PropertyName":87,"Arguments":88,"AttributeList":89,"Attribute":90,"FUNCTION":91,"ParameterDefinitionList":92,"MAP":93,"->":94,"$accept":0,"$end":1},
    2238 terminals_: {2:"error",5:"EOF",7:"IF",8:"(",10:")",12:"ELSE",14:"WHILE",15:"FOR",16:";",17:"DO",19:"USE",20:"IDENTIFIER",21:"DELETE",23:"RETURN",26:"{",27:"}",32:"=",34:"?",35:":",37:"||",39:"&&",41:"==",42:"!=",43:"~=",45:"<",46:">",47:"<=",48:">=",50:"+",51:"-",53:"*",54:"/",55:"%",57:"^",58:"!",64:".",65:"[",66:"]",74:"NULL",75:"TRUE",76:"FALSE",77:"STRING",78:"NUMBER",79:"NAN",80:"INFINITY",82:"<<",83:">>",86:",",91:"FUNCTION",93:"MAP",94:"->"},
    2239 productions_: [0,[3,2],[6,5],[6,7],[13,5],[13,9],[13,7],[18,2],[18,2],[22,2],[22,3],[24,1],[25,3],[4,2],[4,0],[11,1],[11,1],[11,1],[11,1],[11,1],[11,1],[11,1],[28,2],[9,1],[29,1],[29,3],[30,1],[30,5],[33,1],[33,3],[36,1],[36,3],[38,1],[38,3],[38,3],[38,3],[40,1],[40,3],[40,3],[40,3],[40,3],[44,1],[44,3],[44,3],[49,1],[49,3],[49,3],[49,3],[56,1],[56,3],[52,1],[52,2],[52,2],[52,2],[31,1],[31,1],[59,1],[59,1],[59,1],[59,3],[59,4],[61,1],[61,1],[61,1],[61,1],[61,3],[67,1],[67,1],[67,1],[67,1],[70,1],[71,1],[71,1],[72,1],[73,1],[73,1],[73,1],[69,2],[69,3],[68,2],[68,3],[84,1],[84,3],[85,3],[87,1],[87,1],[87,1],[60,2],[60,3],[60,2],[60,4],[60,3],[88,2],[88,3],[89,1],[89,3],[90,1],[90,1],[81,1],[81,3],[62,4],[62,5],[63,6],[92,1],[92,3]],
    2240 performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */) {
    2241 /* this == yyval */
    2242
    2243 var $0 = $$.length - 1;
    2244 switch (yystate) {
    2245 case 1:
    2246  return $$[$0-1];
    2247 break;
    2248 case 2:
    2249  this.$ = AST.createNode(lc(_$[$0-4]), 'node_op', 'op_if', $$[$0-2], $$[$0]);
    2250 break;
    2251 case 3:
    2252  this.$ = AST.createNode(lc(_$[$0-6]), 'node_op', 'op_if_else', $$[$0-4], $$[$0-2], $$[$0]);
    2253 break;
    2254 case 4:
    2255  this.$ = AST.createNode(lc(_$[$0-4]), 'node_op', 'op_while', $$[$0-2], $$[$0]);
    2256 break;
    2257 case 5:
    2258  this.$ = AST.createNode(lc(_$[$0-8]), 'node_op', 'op_for', $$[$0-6], $$[$0-4], $$[$0-2], $$[$0]);
    2259 break;
    2260 case 6:
    2261  this.$ = AST.createNode(lc(_$[$0-6]), 'node_op', 'op_do', $$[$0-5], $$[$0-2]);
    2262 break;
    2263 case 7:
    2264  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_use', $$[$0]);
    2265 break;
    2266 case 8:
    2267  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_delete', $$[$0]);
    2268 break;
    2269 case 9:
    2270  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_return', undefined);
    2271 break;
    2272 case 10:
    2273  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_return', $$[$0-1]);
    2274 break;
    2275 case 11: case 14:
    2276  this.$ = AST.createNode(lc(_$[$0]), 'node_op', 'op_none');
    2277 break;
    2278 case 12:
    2279  this.$ = $$[$0-1]; this.$.needsBrackets = true;
    2280 break;
    2281 case 13:
    2282  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_none', $$[$0-1], $$[$0]);
    2283 break;
    2284 case 15: case 16: case 17: case 18: case 19: case 20: case 21: case 23: case 24: case 26: case 28: case 30: case 32: case 36: case 41: case 44: case 48: case 50: case 52: case 54: case 55: case 56: case 58: case 62: case 81: case 84: case 85: case 86:
    2285  this.$ = $$[$0];
    2286 break;
    2287 case 22: case 65: case 93:
    2288  this.$ = $$[$0-1];
    2289 break;
    2290 case 25:
    2291  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_assign', $$[$0-2], $$[$0]); this.$.isMath = false;
    2292 break;
    2293 case 27:
    2294  this.$ = AST.createNode(lc(_$[$0-4]), 'node_op', 'op_conditional', $$[$0-4], $$[$0-2], $$[$0]); this.$.isMath = false;
    2295 break;
    2296 case 29:
    2297  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_or', $$[$0-2], $$[$0]); this.$.isMath = false;
    2298 break;
    2299 case 31:
    2300  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_and', $$[$0-2], $$[$0]); this.$.isMath = false;
    2301 break;
    2302 case 33:
    2303  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_equ', $$[$0-2], $$[$0]); this.$.isMath = false;
    2304 break;
    2305 case 34:
    2306  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_neq', $$[$0-2], $$[$0]); this.$.isMath = false;
    2307 break;
    2308 case 35:
    2309  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_approx', $$[$0-2], $$[$0]); this.$.isMath = false;
    2310 break;
    2311 case 37:
    2312  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_lot', $$[$0-2], $$[$0]); this.$.isMath = false;
    2313 break;
    2314 case 38:
    2315  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_grt', $$[$0-2], $$[$0]); this.$.isMath = false;
    2316 break;
    2317 case 39:
    2318  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_loe', $$[$0-2], $$[$0]); this.$.isMath = false;
    2319 break;
    2320 case 40:
    2321  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_gre', $$[$0-2], $$[$0]); this.$.isMath = false;
    2322 break;
    2323 case 42:
    2324  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_add', $$[$0-2], $$[$0]); this.$.isMath = true;
    2325 break;
    2326 case 43:
    2327  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_sub', $$[$0-2], $$[$0]); this.$.isMath = true;
    2328 break;
    2329 case 45:
    2330  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_mul', $$[$0-2], $$[$0]); this.$.isMath = true;
    2331 break;
    2332 case 46:
    2333  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_div', $$[$0-2], $$[$0]); this.$.isMath = true;
    2334 break;
    2335 case 47:
    2336  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_mod', $$[$0-2], $$[$0]); this.$.isMath = true;
    2337 break;
    2338 case 49:
    2339  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_exp', $$[$0-2], $$[$0]); this.$.isMath = true;
    2340 break;
    2341 case 51:
    2342  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_not', $$[$0]); this.$.isMath = false;
    2343 break;
    2344 case 53:
    2345  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_neg', $$[$0]); this.$.isMath = true;
    2346 break;
    2347 case 57: case 63: case 64: case 66: case 67: case 68: case 97:
    2348  this.$ = $$[$0]; this.$.isMath = false;
    2349 break;
    2350 case 59: case 91:
    2351  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_property', $$[$0-2], $$[$0]); this.$.isMath = true;
    2352 break;
    2353 case 60: case 90:
    2354  this.$ = AST.createNode(lc(_$[$0-3]), 'node_op', 'op_extvalue', $$[$0-3], $$[$0-1]); this.$.isMath = true;
    2355 break;
    2356 case 61:
    2357  this.$ = AST.createNode(lc(_$[$0]), 'node_var', $$[$0]);
    2358 break;
    2359 case 69:
    2360  this.$ = $$[$0]; this.$.isMath = true;
    2361 break;
    2362 case 70:
    2363  this.$ = AST.createNode(lc(_$[$0]), 'node_const', null);
    2364 break;
    2365 case 71:
    2366  this.$ = AST.createNode(lc(_$[$0]), 'node_const_bool', true);
    2367 break;
    2368 case 72:
    2369  this.$ = AST.createNode(lc(_$[$0]), 'node_const_bool', false);
    2370 break;
    2371 case 73:
    2372  this.$ = AST.createNode(lc(_$[$0]), 'node_str', $$[$0].substring(1, $$[$0].length - 1));
    2373 break;
    2374 case 74:
    2375  this.$ = AST.createNode(lc(_$[$0]), 'node_const', parseFloat($$[$0]));
    2376 break;
    2377 case 75:
    2378  this.$ = AST.createNode(lc(_$[$0]), 'node_const', NaN);
    2379 break;
    2380 case 76:
    2381  this.$ = AST.createNode(lc(_$[$0]), 'node_const', Infinity);
    2382 break;
    2383 case 77:
    2384  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_array', []);
    2385 break;
    2386 case 78:
    2387  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_array', $$[$0-1]);
    2388 break;
    2389 case 79:
    2390  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_emptyobject', {});
    2391 break;
    2392 case 80:
    2393  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_proplst_val', $$[$0-1]);
    2394 break;
    2395 case 82:
    2396  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_proplst', $$[$0-2], $$[$0]);
    2397 break;
    2398 case 83:
    2399  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_prop', $$[$0-2], $$[$0]);
    2400 break;
    2401 case 87: case 89:
    2402  this.$ = AST.createNode(lc(_$[$0-1]), 'node_op', 'op_execfun', $$[$0-1], $$[$0]); this.$.isMath = true;
    2403 break;
    2404 case 88:
    2405  this.$ = AST.createNode(lc(_$[$0-2]), 'node_op', 'op_execfun', $$[$0-2], $$[$0-1], $$[$0], true); this.$.isMath = false;
    2406 break;
    2407 case 92:
    2408  this.$ = [];
    2409 break;
    2410 case 94: case 98: case 103:
    2411  this.$ = [$$[$0]];
    2412 break;
    2413 case 95: case 99: case 104:
    2414  this.$ = $$[$0-2].concat($$[$0]);
    2415 break;
    2416 case 96:
    2417  this.$ = AST.createNode(lc(_$[$0]), 'node_var', $$[$0]); this.$.isMath = true;
    2418 break;
    2419 case 100:
    2420  this.$ = AST.createNode(lc(_$[$0-3]), 'node_op', 'op_function', [], $$[$0]); this.$.isMath = false;
    2421 break;
    2422 case 101:
    2423  this.$ = AST.createNode(lc(_$[$0-4]), 'node_op', 'op_function', $$[$0-2], $$[$0]); this.$.isMath = false;
    2424 break;
    2425 case 102:
    2426  this.$ = AST.createNode(lc(_$[$0-5]), 'node_op', 'op_map', $$[$0-3], $$[$0]);
    2427 break;
    2428 }
    2429 },
    2430 table: [o([5,7,8,14,15,16,17,19,20,21,23,26,50,51,58,65,74,75,76,77,78,79,80,82,91,93],$V0,{3:1,4:2}),{1:[3]},{5:[1,3],6:6,7:$V1,8:$V2,9:20,11:4,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{1:[2,1]},o($Vq,[2,13]),o($Vr,[2,15]),o($Vr,[2,16]),o($Vr,[2,17]),o($Vr,[2,18]),o($Vr,[2,19]),o($Vr,[2,20]),o($Vr,[2,21]),o([7,8,14,15,16,17,19,20,21,23,26,27,50,51,58,65,74,75,76,77,78,79,80,82,91,93],$V0,{4:61}),{8:[1,62]},{8:[1,63]},{8:[1,64]},{6:6,7:$V1,8:$V2,9:20,11:65,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{20:[1,66]},{20:[1,67]},{8:$V2,9:69,16:[1,68],20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{16:[1,70]},o($Vr,[2,11]),o($Vs,[2,23]),o($Vs,[2,24]),o([8,10,16,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,64,65,66,83,86],$Vt,{32:[1,71],57:$Vu}),o([8,10,16,32,35,39,41,42,43,45,46,47,48,50,51,53,54,55,57,64,65,66,83,86],[2,26],{34:[1,73],37:[1,74]}),o($Vv,[2,54],{88:77,8:$Vw,64:[1,75],65:[1,76]}),o($Vv,[2,55],{88:79,8:$Vw,64:[1,81],65:[1,80]}),o($Vx,[2,28],{39:$Vy}),o($Vs,[2,56]),o($Vs,[2,57]),o($Vs,[2,58]),o($Vz,[2,30],{41:$VA,42:$VB,43:$VC}),o($Vs,[2,61]),o($Vs,[2,62]),o($Vs,[2,63]),o($Vs,[2,64]),{8:$V2,9:86,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:[1,87]},{8:[1,88]},o($VD,[2,32],{45:$VE,46:$VF,47:$VG,48:$VH}),o($Vs,[2,66]),o($Vs,[2,67]),o($Vs,[2,68]),o($Vs,[2,69]),{20:$VI,72:98,73:99,77:$Vj,78:$Vk,79:$Vl,80:$Vm,83:[1,93],84:94,85:95,87:96},{8:$V2,20:$V8,29:102,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,66:[1,100],67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,81:101,82:$Vn,91:$Vo,93:$Vp},o($VJ,[2,36],{50:$VK,51:$VL}),o($Vs,[2,70]),o($Vs,[2,71]),o($Vs,[2,72]),o($Vs,[2,73]),o($Vs,[2,74]),o($Vs,[2,75]),o($Vs,[2,76]),o($VM,[2,41],{53:$VN,54:$VO,55:$VP}),o($Vs,[2,44]),o($Vs,[2,50]),{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:108,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:110,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:111,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{6:6,7:$V1,8:$V2,9:20,11:4,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,27:[1,112],28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:113,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:114,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:115,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{14:[1,116]},o($Vr,[2,7]),o($Vr,[2,8]),o($Vr,[2,9]),{16:[1,117]},o($Vr,[2,22]),{8:$V2,20:$V8,29:118,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:119,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,29:120,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,36:121,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{20:[1,122]},{8:$V2,9:123,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,87],{89:124,90:125,68:127,20:$VQ,82:$Vn}),{8:$V2,10:[1,128],20:$V8,29:102,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,81:129,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,89]),{8:$V2,9:130,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{20:[1,131]},{8:$V2,20:$V8,31:109,38:132,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,40:133,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,40:134,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,40:135,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{10:[1,136]},{10:[1,137],20:$VR,92:138},{20:$VR,92:140},{8:$V2,20:$V8,31:109,44:141,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,44:142,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,44:143,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,44:144,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,79]),{83:[1,145],86:[1,146]},o($VS,[2,81]),{35:[1,147]},{35:[2,84]},{35:[2,85]},{35:[2,86]},o($Vs,[2,77]),{66:[1,148],86:$VT},o($VU,[2,98]),{8:$V2,20:$V8,31:109,49:150,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,49:151,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:152,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:153,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,31:109,50:$Vc,51:$Vd,52:154,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,51]),o([8,10,16,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,64,65,66,83,86],$Vt,{57:$Vu}),o($Vs,[2,52]),o($Vs,[2,53]),o([5,7,8,10,12,14,15,16,17,19,20,21,23,26,27,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,57,58,64,65,66,74,75,76,77,78,79,80,82,83,86,91,93],[2,12]),{10:[1,155]},{10:[1,156]},{16:[1,157]},{8:[1,158]},o($Vr,[2,10]),o($Vs,[2,25]),o($Vs,[2,49]),{35:[1,159]},o($Vx,[2,29],{39:$Vy}),o($Vs,[2,59]),{66:[1,160]},o([8,10,16,32,34,35,37,39,41,42,43,45,46,47,48,50,51,53,54,55,57,64,65,66,83],[2,88],{86:[1,161]}),o($Vs,[2,94]),o($Vs,[2,96]),o($Vs,[2,97]),o($VV,[2,92]),{10:[1,162],86:$VT},{66:[1,163]},o($Vs,[2,91]),o($Vz,[2,31],{41:$VA,42:$VB,43:$VC}),o($VD,[2,33],{45:$VE,46:$VF,47:$VG,48:$VH}),o($VD,[2,34],{45:$VE,46:$VF,47:$VG,48:$VH}),o($VD,[2,35],{45:$VE,46:$VF,47:$VG,48:$VH}),o($Vs,[2,65]),{25:164,26:$Vb},{10:[1,165],86:$VW},o($VX,[2,103]),{10:[1,167],86:$VW},o($VJ,[2,37],{50:$VK,51:$VL}),o($VJ,[2,38],{50:$VK,51:$VL}),o($VJ,[2,39],{50:$VK,51:$VL}),o($VJ,[2,40],{50:$VK,51:$VL}),o($Vs,[2,80]),{20:$VI,72:98,73:99,77:$Vj,78:$Vk,79:$Vl,80:$Vm,85:168,87:96},{8:$V2,20:$V8,29:169,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,78]),{8:$V2,20:$V8,29:170,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($VM,[2,42],{53:$VN,54:$VO,55:$VP}),o($VM,[2,43],{53:$VN,54:$VO,55:$VP}),o($Vs,[2,45]),o($Vs,[2,46]),o($Vs,[2,47]),{6:6,7:$V1,8:$V2,9:20,11:171,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{6:6,7:$V1,8:$V2,9:20,11:172,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:173,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:174,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,20:$V8,29:175,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vs,[2,60]),{20:$VQ,68:127,82:$Vn,90:176},o($VV,[2,93]),o($Vs,[2,90]),o($Vs,[2,100]),{25:177,26:$Vb},{20:[1,178]},{94:[1,179]},o($VS,[2,82]),o($VS,[2,83]),o($VU,[2,99]),o($Vq,[2,2],{12:[1,180]}),o($Vr,[2,4]),{16:[1,181]},{10:[1,182]},o($Vs,[2,27]),o($Vs,[2,95]),o($Vs,[2,101]),o($VX,[2,104]),{8:$V2,9:183,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{6:6,7:$V1,8:$V2,9:20,11:184,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{8:$V2,9:185,20:$V8,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},{16:[1,186]},o($Vs,[2,102]),o($Vr,[2,3]),{10:[1,187]},o($Vr,[2,6]),{6:6,7:$V1,8:$V2,9:20,11:188,13:7,14:$V3,15:$V4,16:$V5,17:$V6,18:8,19:$V7,20:$V8,21:$V9,22:9,23:$Va,24:11,25:5,26:$Vb,28:10,29:22,30:23,31:24,33:25,36:28,38:32,40:40,44:47,49:55,50:$Vc,51:$Vd,52:56,56:57,58:$Ve,59:26,60:27,61:29,62:30,63:31,65:$Vf,67:34,68:35,69:36,70:41,71:42,72:43,73:44,74:$Vg,75:$Vh,76:$Vi,77:$Vj,78:$Vk,79:$Vl,80:$Vm,82:$Vn,91:$Vo,93:$Vp},o($Vr,[2,5])],
    2431 defaultActions: {3:[2,1],97:[2,84],98:[2,85],99:[2,86]},
    2432 parseError: function parseError(str, hash) {
    2433     if (hash.recoverable) {
    2434         this.trace(str);
    2435     } else {
    2436         var error = new Error(str);
    2437         error.hash = hash;
    2438         throw error;
    2439     }
    2440 },
    2441 parse: function parse(input) {
    2442     var self = this, stack = [0], tstack = [], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
    2443     var args = lstack.slice.call(arguments, 1);
    2444     var lexer = Object.create(this.lexer);
    2445     var sharedState = { yy: {} };
    2446     for (var k in this.yy) {
    2447         if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
    2448             sharedState.yy[k] = this.yy[k];
    2449         }
    2450     }
    2451     lexer.setInput(input, sharedState.yy);
    2452     sharedState.yy.lexer = lexer;
    2453     sharedState.yy.parser = this;
    2454     if (typeof lexer.yylloc == 'undefined') {
    2455         lexer.yylloc = {};
    2456     }
    2457     var yyloc = lexer.yylloc;
    2458     lstack.push(yyloc);
    2459     var ranges = lexer.options && lexer.options.ranges;
    2460     if (typeof sharedState.yy.parseError === 'function') {
    2461         this.parseError = sharedState.yy.parseError;
    2462     } else {
    2463         this.parseError = Object.getPrototypeOf(this).parseError;
    2464     }
    2465     function popStack(n) {
    2466         stack.length = stack.length - 2 * n;
    2467         vstack.length = vstack.length - n;
    2468         lstack.length = lstack.length - n;
    2469     }
    2470     _token_stack:
    2471         var lex = function () {
    2472             var token;
    2473             token = lexer.lex() || EOF;
    2474             if (typeof token !== 'number') {
    2475                 token = self.symbols_[token] || token;
    2476             }
    2477             return token;
    2478         };
    2479     var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
    2480     while (true) {
    2481         state = stack[stack.length - 1];
    2482         if (this.defaultActions[state]) {
    2483             action = this.defaultActions[state];
    2484         } else {
    2485             if (symbol === null || typeof symbol == 'undefined') {
    2486                 symbol = lex();
    2487             }
    2488             action = table[state] && table[state][symbol];
    2489         }
    2490                     if (typeof action === 'undefined' || !action.length || !action[0]) {
    2491                 var errStr = '';
    2492                 expected = [];
    2493                 for (p in table[state]) {
    2494                     if (this.terminals_[p] && p > TERROR) {
    2495                         expected.push('\'' + this.terminals_[p] + '\'');
    2496                     }
    2497                 }
    2498                 if (lexer.showPosition) {
    2499                     errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
    2500                 } else {
    2501                     errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
    2502                 }
    2503                 this.parseError(errStr, {
    2504                     text: lexer.match,
    2505                     token: this.terminals_[symbol] || symbol,
    2506                     line: lexer.yylineno,
    2507                     loc: yyloc,
    2508                     expected: expected
    2509                 });
    2510             }
    2511         if (action[0] instanceof Array && action.length > 1) {
    2512             throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
    2513         }
    2514         switch (action[0]) {
    2515         case 1:
    2516             stack.push(symbol);
    2517             vstack.push(lexer.yytext);
    2518             lstack.push(lexer.yylloc);
    2519             stack.push(action[1]);
    2520             symbol = null;
    2521             if (!preErrorSymbol) {
    2522                 yyleng = lexer.yyleng;
    2523                 yytext = lexer.yytext;
    2524                 yylineno = lexer.yylineno;
    2525                 yyloc = lexer.yylloc;
    2526                 if (recovering > 0) {
    2527                     recovering--;
    2528                 }
    2529             } else {
    2530                 symbol = preErrorSymbol;
    2531                 preErrorSymbol = null;
    2532             }
    2533             break;
    2534         case 2:
    2535             len = this.productions_[action[1]][1];
    2536             yyval.$ = vstack[vstack.length - len];
    2537             yyval._$ = {
    2538                 first_line: lstack[lstack.length - (len || 1)].first_line,
    2539                 last_line: lstack[lstack.length - 1].last_line,
    2540                 first_column: lstack[lstack.length - (len || 1)].first_column,
    2541                 last_column: lstack[lstack.length - 1].last_column
    2542             };
    2543             if (ranges) {
    2544                 yyval._$.range = [
    2545                     lstack[lstack.length - (len || 1)].range[0],
    2546                     lstack[lstack.length - 1].range[1]
    2547                 ];
    2548             }
    2549             r = this.performAction.apply(yyval, [
    2550                 yytext,
    2551                 yyleng,
    2552                 yylineno,
    2553                 sharedState.yy,
    2554                 action[1],
    2555                 vstack,
    2556                 lstack
    2557             ].concat(args));
    2558             if (typeof r !== 'undefined') {
    2559                 return r;
    2560             }
    2561             if (len) {
    2562                 stack = stack.slice(0, -1 * len * 2);
    2563                 vstack = vstack.slice(0, -1 * len);
    2564                 lstack = lstack.slice(0, -1 * len);
    2565             }
    2566             stack.push(this.productions_[action[1]][0]);
    2567             vstack.push(yyval.$);
    2568             lstack.push(yyval._$);
    2569             newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
    2570             stack.push(newState);
    2571             break;
    2572         case 3:
    2573             return true;
    2574         }
    2575     }
    2576     return true;
    2577 }};
    2578
    2579
    2580     var AST = {
    2581         node: function (type, value, children) {
    2582             return {
    2583                 type: type,
    2584                 value: value,
    2585                 children: children
    2586             };
    2587         },
    2588
    2589         createNode: function (pos, type, value, children) {
    2590             var i,
    2591                 n = this.node(type, value, []);
    2592
    2593             for (i = 3; i < arguments.length; i++) {
    2594                 n.children.push(arguments[i]);
    2595             }
    2596
    2597             n.line = pos[0];
    2598             n.col = pos[1];
    2599             n.eline = pos[2];
    2600             n.ecol = pos[3];
    2601
    2602             return n;
    2603         }
    2604     };
    2605
    2606     var lc = function (lc1) {
    2607         return [lc1.first_line, lc1.first_column, lc1.last_line, lc1.last_column];
    2608     };
    2609
    2610 /* generated by jison-lex 0.3.4 */
    2611 var lexer = (function(){
    2612 var lexer = ({
    2613
    2614 EOF:1,
    2615
    2616 parseError:function parseError(str, hash) {
    2617         if (this.yy.parser) {
    2618             this.yy.parser.parseError(str, hash);
    2619         } else {
    2620             throw new Error(str);
    2621         }
    2622     },
    2623
    2624 // resets the lexer, sets new input
    2625 setInput:function (input, yy) {
    2626         this.yy = yy || this.yy || {};
    2627         this._input = input;
    2628         this._more = this._backtrack = this.done = false;
    2629         this.yylineno = this.yyleng = 0;
    2630         this.yytext = this.matched = this.match = '';
    2631         this.conditionStack = ['INITIAL'];
    2632         this.yylloc = {
    2633             first_line: 1,
    2634             first_column: 0,
    2635             last_line: 1,
    2636             last_column: 0
    2637         };
    2638         if (this.options.ranges) {
    2639             this.yylloc.range = [0,0];
    2640         }
    2641         this.offset = 0;
    2642         return this;
    2643     },
    2644
    2645 // consumes and returns one char from the input
    2646 input:function () {
    2647         var ch = this._input[0];
    2648         this.yytext += ch;
    2649         this.yyleng++;
    2650         this.offset++;
    2651         this.match += ch;
    2652         this.matched += ch;
    2653         var lines = ch.match(/(?:\r\n?|\n).*/g);
    2654         if (lines) {
    2655             this.yylineno++;
    2656             this.yylloc.last_line++;
    2657         } else {
    2658             this.yylloc.last_column++;
    2659         }
    2660         if (this.options.ranges) {
    2661             this.yylloc.range[1]++;
    2662         }
    2663
    2664         this._input = this._input.slice(1);
    2665         return ch;
    2666     },
    2667
    2668 // unshifts one char (or a string) into the input
    2669 unput:function (ch) {
    2670         var len = ch.length;
    2671         var lines = ch.split(/(?:\r\n?|\n)/g);
    2672
    2673         this._input = ch + this._input;
    2674         this.yytext = this.yytext.substr(0, this.yytext.length - len);
    2675         //this.yyleng -= len;
    2676         this.offset -= len;
    2677         var oldLines = this.match.split(/(?:\r\n?|\n)/g);
    2678         this.match = this.match.substr(0, this.match.length - 1);
    2679         this.matched = this.matched.substr(0, this.matched.length - 1);
    2680
    2681         if (lines.length - 1) {
    2682             this.yylineno -= lines.length - 1;
    2683         }
    2684         var r = this.yylloc.range;
    2685
    2686         this.yylloc = {
    2687             first_line: this.yylloc.first_line,
    2688             last_line: this.yylineno + 1,
    2689             first_column: this.yylloc.first_column,
    2690             last_column: lines ?
    2691                 (lines.length === oldLines.length ? this.yylloc.first_column : 0)
    2692                  + oldLines[oldLines.length - lines.length].length - lines[0].length :
    2693               this.yylloc.first_column - len
    2694         };
    2695
    2696         if (this.options.ranges) {
    2697             this.yylloc.range = [r[0], r[0] + this.yyleng - len];
    2698         }
    2699         this.yyleng = this.yytext.length;
    2700         return this;
    2701     },
    2702
    2703 // When called from action, caches matched text and appends it on next action
    2704 more:function () {
    2705         this._more = true;
    2706         return this;
    2707     },
    2708
    2709 // When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
    2710 reject:function () {
    2711         if (this.options.backtrack_lexer) {
    2712             this._backtrack = true;
    2713         } else {
    2714             return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
    2715                 text: "",
    2716                 token: null,
    2717                 line: this.yylineno
    2718             });
    2719
    2720         }
    2721         return this;
    2722     },
    2723
    2724 // retain first n characters of the match
    2725 less:function (n) {
    2726         this.unput(this.match.slice(n));
    2727     },
    2728
    2729 // displays already matched input, i.e. for error messages
    2730 pastInput:function () {
    2731         var past = this.matched.substr(0, this.matched.length - this.match.length);
    2732         return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
    2733     },
    2734
    2735 // displays upcoming input, i.e. for error messages
    2736 upcomingInput:function () {
    2737         var next = this.match;
    2738         if (next.length < 20) {
    2739             next += this._input.substr(0, 20-next.length);
    2740         }
    2741         return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
    2742     },
    2743
    2744 // displays the character position where the lexing error occurred, i.e. for error messages
    2745 showPosition:function () {
    2746         var pre = this.pastInput();
    2747         var c = new Array(pre.length + 1).join("-");
    2748         return pre + this.upcomingInput() + "\n" + c + "^";
    2749     },
    2750
    2751 // test the lexed token: return FALSE when not a match, otherwise return token
    2752 test_match:function (match, indexed_rule) {
    2753         var token,
    2754             lines,
    2755             backup;
    2756
    2757         if (this.options.backtrack_lexer) {
    2758             // save context
    2759             backup = {
    2760                 yylineno: this.yylineno,
    2761                 yylloc: {
    2762                     first_line: this.yylloc.first_line,
    2763                     last_line: this.last_line,
    2764                     first_column: this.yylloc.first_column,
    2765                     last_column: this.yylloc.last_column
    2766                 },
    2767                 yytext: this.yytext,
    2768                 match: this.match,
    2769                 matches: this.matches,
    2770                 matched: this.matched,
    2771                 yyleng: this.yyleng,
    2772                 offset: this.offset,
    2773                 _more: this._more,
    2774                 _input: this._input,
    2775                 yy: this.yy,
    2776                 conditionStack: this.conditionStack.slice(0),
    2777                 done: this.done
    2778             };
    2779             if (this.options.ranges) {
    2780                 backup.yylloc.range = this.yylloc.range.slice(0);
    2781             }
    2782         }
    2783
    2784         lines = match[0].match(/(?:\r\n?|\n).*/g);
    2785         if (lines) {
    2786             this.yylineno += lines.length;
    2787         }
    2788         this.yylloc = {
    2789             first_line: this.yylloc.last_line,
    2790             last_line: this.yylineno + 1,
    2791             first_column: this.yylloc.last_column,
    2792             last_column: lines ?
    2793                          lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
    2794                          this.yylloc.last_column + match[0].length
    2795         };
    2796         this.yytext += match[0];
    2797         this.match += match[0];
    2798         this.matches = match;
    2799         this.yyleng = this.yytext.length;
    2800         if (this.options.ranges) {
    2801             this.yylloc.range = [this.offset, this.offset += this.yyleng];
    2802         }
    2803         this._more = false;
    2804         this._backtrack = false;
    2805         this._input = this._input.slice(match[0].length);
    2806         this.matched += match[0];
    2807         token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
    2808         if (this.done && this._input) {
    2809             this.done = false;
    2810         }
    2811         if (token) {
    2812             return token;
    2813         } else if (this._backtrack) {
    2814             // recover context
    2815             for (var k in backup) {
    2816                 this[k] = backup[k];
    2817             }
    2818             return false; // rule action called reject() implying the next rule should be tested instead.
    2819         }
    2820         return false;
    2821     },
    2822
    2823 // return next match in input
    2824 next:function () {
    2825         if (this.done) {
    2826             return this.EOF;
    2827         }
    2828         if (!this._input) {
    2829             this.done = true;
    2830         }
    2831
    2832         var token,
    2833             match,
    2834             tempMatch,
    2835             index;
    2836         if (!this._more) {
    2837             this.yytext = '';
    2838             this.match = '';
    2839         }
    2840         var rules = this._currentRules();
    2841         for (var i = 0; i < rules.length; i++) {
    2842             tempMatch = this._input.match(this.rules[rules[i]]);
    2843             if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
    2844                 match = tempMatch;
    2845                 index = i;
    2846                 if (this.options.backtrack_lexer) {
    2847                     token = this.test_match(tempMatch, rules[i]);
    2848                     if (token !== false) {
    2849                         return token;
    2850                     } else if (this._backtrack) {
    2851                         match = false;
    2852                         continue; // rule action called reject() implying a rule MISmatch.
    2853                     } else {
    2854                         // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
    2855                         return false;
    2856                     }
    2857                 } else if (!this.options.flex) {
    2858                     break;
    2859                 }
    2860             }
    2861         }
    2862         if (match) {
    2863             token = this.test_match(match, rules[index]);
    2864             if (token !== false) {
    2865                 return token;
    2866             }
    2867             // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
    2868             return false;
    2869         }
    2870         if (this._input === "") {
    2871             return this.EOF;
    2872         } else {
    2873             return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
    2874                 text: "",
    2875                 token: null,
    2876                 line: this.yylineno
    2877             });
    2878         }
    2879     },
    2880
    2881 // return next match that has a token
    2882 lex:function lex() {
    2883         var r = this.next();
    2884         if (r) {
    2885             return r;
    2886         } else {
    2887             return this.lex();
    2888         }
    2889     },
    2890
    2891 // activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
    2892 begin:function begin(condition) {
    2893         this.conditionStack.push(condition);
    2894     },
    2895
    2896 // pop the previously active lexer condition state off the condition stack
    2897 popState:function popState() {
    2898         var n = this.conditionStack.length - 1;
    2899         if (n > 0) {
    2900             return this.conditionStack.pop();
    2901         } else {
    2902             return this.conditionStack[0];
    2903         }
    2904     },
    2905
    2906 // produce the lexer rule set which is active for the currently active lexer condition state
    2907 _currentRules:function _currentRules() {
    2908         if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
    2909             return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
    2910         } else {
    2911             return this.conditions["INITIAL"].rules;
    2912         }
    2913     },
    2914
    2915 // return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
    2916 topState:function topState(n) {
    2917         n = this.conditionStack.length - 1 - Math.abs(n || 0);
    2918         if (n >= 0) {
    2919             return this.conditionStack[n];
    2920         } else {
    2921             return "INITIAL";
    2922         }
    2923     },
    2924
    2925 // alias for begin(condition)
    2926 pushState:function pushState(condition) {
    2927         this.begin(condition);
    2928     },
    2929
    2930 // return the number of states currently on the stack
    2931 stateStackSize:function stateStackSize() {
    2932         return this.conditionStack.length;
    2933     },
    2934 options: {},
    2935 performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
    2936 var YYSTATE=YY_START;
    2937 switch($avoiding_name_collisions) {
    2938 case 0:/* ignore */
    2939 break;
    2940 case 1:return 78
    2941 break;
    2942 case 2:return 78
    2943 break;
    2944 case 3: return 77;
    2945 break;
    2946 case 4: return 77;
    2947 break;
    2948 case 5:/* ignore comment */
    2949 break;
    2950 case 6:/* ignore multiline comment */
    2951 break;
    2952 case 7:return 7
    2953 break;
    2954 case 8:return 12
    2955 break;
    2956 case 9:return 14
    2957 break;
    2958 case 10:return 17
    2959 break;
    2960 case 11:return 15
    2961 break;
    2962 case 12:return 91
    2963 break;
    2964 case 13:return 93
    2965 break;
    2966 case 14:return 19
    2967 break;
    2968 case 15:return 23
    2969 break;
    2970 case 16:return 21
    2971 break;
    2972 case 17:return 75
    2973 break;
    2974 case 18:return 76
    2975 break;
    2976 case 19:return 74
    2977 break;
    2978 case 20:return 80
    2979 break;
    2980 case 21:return 94
    2981 break;
    2982 case 22:return 82
    2983 break;
    2984 case 23:return 83
    2985 break;
    2986 case 24:return 26
    2987 break;
    2988 case 25:return 27
    2989 break;
    2990 case 26:return 16
    2991 break;
    2992 case 27:return '#'
    2993 break;
    2994 case 28:return 34
    2995 break;
    2996 case 29:return 35
    2997 break;
    2998 case 30:return 79
    2999 break;
    3000 case 31:return 64
    3001 break;
    3002 case 32:return 65
    3003 break;
    3004 case 33:return 66
    3005 break;
    3006 case 34:return 8
    3007 break;
    3008 case 35:return 10
    3009 break;
    3010 case 36:return 58
    3011 break;
    3012 case 37:return 57
    3013 break;
    3014 case 38:return 53
    3015 break;
    3016 case 39:return 54
    3017 break;
    3018 case 40:return 55
    3019 break;
    3020 case 41:return 50
    3021 break;
    3022 case 42:return 51
    3023 break;
    3024 case 43:return 47
    3025 break;
    3026 case 44:return 45
    3027 break;
    3028 case 45:return 48
    3029 break;
    3030 case 46:return 46
    3031 break;
    3032 case 47:return 41
    3033 break;
    3034 case 48:return 43
    3035 break;
    3036 case 49:return 42
    3037 break;
    3038 case 50:return 39
    3039 break;
    3040 case 51:return 37
    3041 break;
    3042 case 52:return 32
    3043 break;
    3044 case 53:return 86
    3045 break;
    3046 case 54:return 5
    3047 break;
    3048 case 55:return 20
    3049 break;
    3050 case 56:return 'INVALID'
    3051 break;
    3052 }
    3053 },
    3054 rules: [/^(?:\s+)/,/^(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+\b)/,/^(?:[0-9]+)/,/^(?:"(\\["]|[^"])*")/,/^(?:'(\\[']|[^'])*')/,/^(?:\/\/.*)/,/^(?:\/\*(.|\n|\r)*?\*\/)/,/^(?:if\b)/,/^(?:else\b)/,/^(?:while\b)/,/^(?:do\b)/,/^(?:for\b)/,/^(?:function\b)/,/^(?:map\b)/,/^(?:use\b)/,/^(?:return\b)/,/^(?:delete\b)/,/^(?:true\b)/,/^(?:false\b)/,/^(?:null\b)/,/^(?:Infinity\b)/,/^(?:->)/,/^(?:<<)/,/^(?:>>)/,/^(?:\{)/,/^(?:\})/,/^(?:;)/,/^(?:#)/,/^(?:\?)/,/^(?::)/,/^(?:NaN\b)/,/^(?:\.)/,/^(?:\[)/,/^(?:\])/,/^(?:\()/,/^(?:\))/,/^(?:!)/,/^(?:\^)/,/^(?:\*)/,/^(?:\/)/,/^(?:%)/,/^(?:\+)/,/^(?:-)/,/^(?:<=)/,/^(?:<)/,/^(?:>=)/,/^(?:>)/,/^(?:==)/,/^(?:~=)/,/^(?:!=)/,/^(?:&&)/,/^(?:\|\|)/,/^(?:=)/,/^(?:,)/,/^(?:$)/,/^(?:[A-Za-z_\$][A-Za-z0-9_]*)/,/^(?:.)/],
    3055 conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56],"inclusive":true}}
    3056 });
    3057 return lexer;
    3058 })();
    3059 parser.lexer = lexer;
    3060 function Parser () {
    3061   this.yy = {};
    3062 }
    3063 Parser.prototype = parser;parser.Parser = Parser;
    3064 return new Parser;
    3065 })();
    3066
    3067
    3068 if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
    3069 exports.parser = parser;
    3070 exports.Parser = parser.Parser;
    3071 exports.parse = function () { return parser.parse.apply(parser, arguments); };
    3072 exports.main = function commonjsMain(args) {
    3073     if (!args[1]) {
    3074         console.log('Usage: '+args[0]+' FILE');
    3075         process.exit(1);
    3076     }
    3077     var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
    3078     return exports.parser.parse(source);
    3079 };
    3080 if (typeof module !== 'undefined' && require.main === module) {
    3081   exports.main(process.argv.slice(1));
    3082 }
    3083 }
    3084
    3085     // Work around an issue with browsers that don't support Object.getPrototypeOf()
    3086     parser.yy.parseError = parser.parseError;
    3087
    3088     return JXG.JessieCode;
    3089 });
    3090