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t(t,e){this.mode=void 0,this.gullet=void 0,this.settings=void 0,this.leftrightDepth=void 0,this.nextToken=void 0,this.mode="math",this.gullet=new ya(t,e,this.mode),this.settings=e,this.leftrightDepth=0}var e=t.prototype;return e.expect=function(t,e){if(void 0===e&&(e=!0),this.nextToken.text!==t)throw new o("Expected '"+t+"', got '"+this.nextToken.text+"'",this.nextToken);e&&this.consume()},e.consume=function(){this.nextToken=this.gullet.expandNextToken()},e.switchMode=function(t){this.mode=t,this.gullet.switchMode(t)},e.parse=function(){this.gullet.beginGroup(),this.settings.colorIsTextColor&&this.gullet.macros.set("\\color","\\textcolor"),this.consume();var t=this.parseExpression(!1);return this.expect("EOF",!1),this.gullet.endGroup(),t},e.parseExpression=function(e,r){for(var a=[];;){"math"===this.mode&&this.consumeSpaces();var n=this.nextToken;if(-1!==t.endOfExpression.indexOf(n.text))break;if(r&&n.text===r)break;if(e&&na[n.text]&&na[n.text].infix)break;var i=this.parseAtom(r);if(!i)break;a.push(i)}return"text"===this.mode&&this.formLigatures(a),this.handleInfixNodes(a)},e.handleInfixNodes=function(t){for(var e,r=-1,a=0;a0&&!l&&this.consumeSpaces(),0!==s||l||"math"!==this.mode||this.consumeSpaces();var m=this.nextToken,c=this.parseGroupOfType("argument to '"+t+"'",h,l,a);if(!c){if(l){i.push(null);continue}throw new o("Expected group after '"+t+"'",m)}(l?i:n).push(c)}return{args:n,optArgs:i}},e.parseGroupOfType=function(t,e,r,a){switch(e){case"color":return this.parseColorGroup(r);case"size":return this.parseSizeGroup(r);case"url":return this.parseUrlGroup(r);case"math":case"text":return this.parseGroup(t,r,a,void 0,e);case"hbox":var n=this.parseGroup(t,r,a,void 0,"text");return n?{type:"styling",mode:n.mode,body:[n],style:"text"}:n;case"raw":if(r&&"{"===this.nextToken.text)return null;var i=this.parseStringGroup("raw",r,!0);if(i)return{type:"raw",mode:"text",string:i.text};throw new o("Expected raw 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a=this.nextToken,n=a,i="";"EOF"!==this.nextToken.text&&t.test(i+this.nextToken.text);)i+=(n=this.nextToken).text,this.consume();if(""===i)throw new o("Invalid "+e+": '"+a.text+"'",a);return this.mode=r,a.range(n,i)},e.parseColorGroup=function(t){var e=this.parseStringGroup("color",t);if(!e)return null;var r=/^(#[a-f0-9]{3}|#?[a-f0-9]{6}|[a-z]+)$/i.exec(e.text);if(!r)throw new o("Invalid color: '"+e.text+"'",e);var a=r[0];return/^[0-9a-f]{6}$/i.test(a)&&(a="#"+a),{type:"color-token",mode:this.mode,color:a}},e.parseSizeGroup=function(t){var e,r=!1;if(!(e=t||"{"===this.nextToken.text?this.parseStringGroup("size",t):this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/,"size")))return null;t||0!==e.text.length||(e.text="0pt",r=!0);var a=/([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(e.text);if(!a)throw new o("Invalid size: '"+e.text+"'",e);var n={number:+(a[1]+a[2]),unit:a[3]};if(!zt(n))throw new o("Invalid unit: 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e=t.length-1,r=0;r=0&&this.settings.reportNonstrict("unicodeTextInMathMode",'Latin-1/Unicode text character "'+e[0]+'" used in math mode',t);var h,l=_[this.mode][e].group,m=a.range(t);if(Y.hasOwnProperty(l)){var c=l;h={type:"atom",mode:this.mode,family:c,loc:m,text:e}}else h={type:l,mode:this.mode,loc:m,text:e};i=h}else{if(!(e.charCodeAt(0)>=128))return null;this.settings.strict&&(M(e.charCodeAt(0))?"math"===this.mode&&this.settings.reportNonstrict("unicodeTextInMathMode",'Unicode text character "'+e[0]+'" used in math mode',t):this.settings.reportNonstrict("unknownSymbol",'Unrecognized Unicode character "'+e[0]+'" ('+e.charCodeAt(0)+")",t)),i={type:"textord",mode:"text",loc:a.range(t),text:e}}if(this.consume(),s)for(var u=0;u