/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */

/*************************************************************
 *
 *  MathJax/extensions/TeX/mhchem.js
 *  
 *  Implements the \ce command for handling chemical formulas
 *  from the mhchem LaTeX package.
 *  
 *  ---------------------------------------------------------------------
 *  
 *  Copyright (c) 2011-2013 The MathJax Consortium
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */MathJax.Extension["TeX/mhchem"]={version:"2.2"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c=MathJax.InputJax.TeX,d=MathJax.Object.Subclass({string:"",i:0,tex:"",atom:!1,sup:"",sub:"",Init:function(a){this.string=a},ParseTable:{"-":"Minus","+":"Plus","(":"Open",")":"Close","[":"Open","]":"Close","\x3c":"Less","^":"Superscript",_:"Subscript","*":"Dot",".":"Dot","\x3d":"Equal","#":"Pound",$:"Math","\\":"Macro"," 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this.tex},ParseLetter:function(){this.FinishAtom();this.Match(/^v( |$)/)?this.tex+="{\\"+this.Arrows.v+"}":(this.tex+="\\text{"+this.Match(/^[a-z]+/i)+"}",this.atom=!0)},ParseNumber:function(){var a=this.Match(/^\d+/);if(this.atom&&!this.sub)this.sub=a;else{this.FinishAtom();var b=this.Match(/^\/\d+/);b?(a="\\frac{"+a+"}{"+b.substr(1)+"}",this.tex+="\\mathchoice{\\textstyle"+a+"}{"+a+"}{"+a+"}{"+a+"}"):(this.tex+=a,this.i<this.string.length&&(this.tex+="\\,"))}},ParseMinus:function(a){if(!this.atom||this.i!==this.string.length-1&&" "!==this.string.charAt(this.i+1)){this.FinishAtom();if("-\x3e"===this.string.substr(this.i,2)){this.i+=2;this.AddArrow("-\x3e");return}this.tex+="{-}"}else this.sup+=a;this.i++},ParsePlus:function(a){this.atom?this.sup+=a:(this.FinishAtom(),this.tex+=a);this.i++},ParseDot:function(a){this.FinishAtom();this.tex+="\\cdot 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