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export declare enum QuoteType {
NoValue = 0,
Unquoted = 1,
Single = 2,
Double = 3
}
export interface Callbacks {
onattribdata(start: number, endIndex: number): void;
onattribentity(codepoint: number): void;
onattribend(quote: QuoteType, endIndex: number): void;
onattribname(start: number, endIndex: number): void;
oncdata(start: number, endIndex: number, endOffset: number): void;
onclosetag(start: number, endIndex: number): void;
oncomment(start: number, endIndex: number, endOffset: number): void;
ondeclaration(start: number, endIndex: number): void;
onend(): void;
onopentagend(endIndex: number): void;
onopentagname(start: number, endIndex: number): void;
onprocessinginstruction(start: number, endIndex: number): void;
onselfclosingtag(endIndex: number): void;
ontext(start: number, endIndex: number): void;
ontextentity(codepoint: number): void;
}
export default class Tokenizer {
private readonly cbs;
/** The current state the tokenizer is in. */
private state;
/** The read buffer. */
private buffer;
/** The beginning of the section that is currently being read. */
private sectionStart;
/** The index within the buffer that we are currently looking at. */
private index;
/** Some behavior, eg. when decoding entities, is done while we are in another state. This keeps track of the other state type. */
private baseState;
/** For special parsing behavior inside of script and style tags. */
private isSpecial;
/** Indicates whether the tokenizer has been paused. */
running: boolean;
/** The offset of the current buffer. */
private offset;
private readonly xmlMode;
private readonly decodeEntities;
private readonly entityTrie;
constructor({ xmlMode, decodeEntities, }: {
xmlMode?: boolean;
decodeEntities?: boolean;
}, cbs: Callbacks);
reset(): void;
write(chunk: string): void;
end(): void;
pause(): void;
resume(): void;
/**
* The current index within all of the written data.
*/
getIndex(): number;
/**
* The start of the current section.
*/
getSectionStart(): number;
private stateText;
private currentSequence;
private sequenceIndex;
private stateSpecialStartSequence;
/** Look for an end tag. For <title> tags, also decode entities. */
private stateInSpecialTag;
private stateCDATASequence;
/**
* When we wait for one specific character, we can speed things up
* by skipping through the buffer until we find it.
*
* @returns Whether the character was found.
*/
private fastForwardTo;
/**
* Comments and CDATA end with `-->` and `]]>`.
*
* Their common qualities are:
* - Their end sequences have a distinct character they start with.
* - That character is then repeated, so we have to check multiple repeats.
* - All characters but the start character of the sequence can be skipped.
*/
private stateInCommentLike;
/**
* HTML only allows ASCII alpha characters (a-z and A-Z) at the beginning of a tag name.
*
* XML allows a lot more characters here (@see https://www.w3.org/TR/REC-xml/#NT-NameStartChar).
* We allow anything that wouldn't end the tag.
*/
private isTagStartChar;
private startSpecial;
private stateBeforeTagName;
private stateInTagName;
private stateBeforeClosingTagName;
private stateInClosingTagName;
private stateAfterClosingTagName;
private stateBeforeAttributeName;
private stateInSelfClosingTag;
private stateInAttributeName;
private stateAfterAttributeName;
private stateBeforeAttributeValue;
private handleInAttributeValue;
private stateInAttributeValueDoubleQuotes;
private stateInAttributeValueSingleQuotes;
private stateInAttributeValueNoQuotes;
private stateBeforeDeclaration;
private stateInDeclaration;
private stateInProcessingInstruction;
private stateBeforeComment;
private stateInSpecialComment;
private stateBeforeSpecialS;
private trieIndex;
private trieCurrent;
/** For named entities, the index of the value. For numeric entities, the code point. */
private entityResult;
private entityExcess;
private stateBeforeEntity;
private stateInNamedEntity;
private emitNamedEntity;
private stateBeforeNumericEntity;
private emitNumericEntity;
private stateInNumericEntity;
private stateInHexEntity;
private allowLegacyEntity;
/**
* Remove data that has already been consumed from the buffer.
*/
private cleanup;
private shouldContinue;
/**
* Iterates through the buffer, calling the function corresponding to the current state.
*
* States that are more likely to be hit are higher up, as a performance improvement.
*/
private parse;
private finish;
/** Handle any trailing data. */
private handleTrailingData;
private emitPartial;
private emitCodePoint;
}
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