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import {
EntityDecoder,
DecodingMode,
htmlDecodeTree,
xmlDecodeTree,
} from "entities/decode";
const enum CharCodes {
Tab = 0x9, // "\t"
NewLine = 0xa, // "\n"
FormFeed = 0xc, // "\f"
CarriageReturn = 0xd, // "\r"
Space = 0x20, // " "
ExclamationMark = 0x21, // "!"
Number = 0x23, // "#"
Amp = 0x26, // "&"
SingleQuote = 0x27, // "'"
DoubleQuote = 0x22, // '"'
Dash = 0x2d, // "-"
Slash = 0x2f, // "/"
Zero = 0x30, // "0"
Nine = 0x39, // "9"
Semi = 0x3b, // ";"
Lt = 0x3c, // "<"
Eq = 0x3d, // "="
Gt = 0x3e, // ">"
Questionmark = 0x3f, // "?"
UpperA = 0x41, // "A"
LowerA = 0x61, // "a"
UpperF = 0x46, // "F"
LowerF = 0x66, // "f"
UpperZ = 0x5a, // "Z"
LowerZ = 0x7a, // "z"
LowerX = 0x78, // "x"
OpeningSquareBracket = 0x5b, // "["
}
/** All the states the tokenizer can be in. */
const enum State {
Text = 1,
BeforeTagName, // After <
InTagName,
InSelfClosingTag,
BeforeClosingTagName,
InClosingTagName,
AfterClosingTagName,
// Attributes
BeforeAttributeName,
InAttributeName,
AfterAttributeName,
BeforeAttributeValue,
InAttributeValueDq, // "
InAttributeValueSq, // '
InAttributeValueNq,
// Declarations
BeforeDeclaration, // !
InDeclaration,
// Processing instructions
InProcessingInstruction, // ?
// Comments & CDATA
BeforeComment,
CDATASequence,
InSpecialComment,
InCommentLike,
// Special tags
BeforeSpecialS, // Decide if we deal with `<script` or `<style`
BeforeSpecialT, // Decide if we deal with `<title` or `<textarea`
SpecialStartSequence,
InSpecialTag,
InEntity,
}
function isWhitespace(c: number): boolean {
return (
c === CharCodes.Space ||
c === CharCodes.NewLine ||
c === CharCodes.Tab ||
c === CharCodes.FormFeed ||
c === CharCodes.CarriageReturn
);
}
function isEndOfTagSection(c: number): boolean {
return c === CharCodes.Slash || c === CharCodes.Gt || isWhitespace(c);
}
function isASCIIAlpha(c: number): boolean {
return (
(c >= CharCodes.LowerA && c <= CharCodes.LowerZ) ||
(c >= CharCodes.UpperA && c <= CharCodes.UpperZ)
);
}
export 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, endIndex: number): void;
}
/**
* Sequences used to match longer strings.
*
* We don't have `Script`, `Style`, or `Title` here. Instead, we re-use the *End
* sequences with an increased offset.
*/
const Sequences = {
Cdata: new Uint8Array([0x43, 0x44, 0x41, 0x54, 0x41, 0x5b]), // CDATA[
CdataEnd: new Uint8Array([0x5d, 0x5d, 0x3e]), // ]]>
CommentEnd: new Uint8Array([0x2d, 0x2d, 0x3e]), // `-->`
ScriptEnd: new Uint8Array([0x3c, 0x2f, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74]), // `</script`
StyleEnd: new Uint8Array([0x3c, 0x2f, 0x73, 0x74, 0x79, 0x6c, 0x65]), // `</style`
TitleEnd: new Uint8Array([0x3c, 0x2f, 0x74, 0x69, 0x74, 0x6c, 0x65]), // `</title`
TextareaEnd: new Uint8Array([
0x3c, 0x2f, 0x74, 0x65, 0x78, 0x74, 0x61, 0x72, 0x65, 0x61,
]), // `</textarea`
XmpEnd: new Uint8Array([0x3c, 0x2f, 0x78, 0x6d, 0x70]), // `</xmp`
};
export default class Tokenizer {
/** The current state the tokenizer is in. */
private state = State.Text;
/** The read buffer. */
private buffer = "";
/** The beginning of the section that is currently being read. */
private sectionStart = 0;
/** The index within the buffer that we are currently looking at. */
private index = 0;
/** The start of the last entity. */
private entityStart = 0;
/** Some behavior, eg. when decoding entities, is done while we are in another state. This keeps track of the other state type. */
private baseState = State.Text;
/** For special parsing behavior inside of script and style tags. */
private isSpecial = false;
/** Indicates whether the tokenizer has been paused. */
public running = true;
/** The offset of the current buffer. */
private offset = 0;
private readonly xmlMode: boolean;
private readonly decodeEntities: boolean;
private readonly entityDecoder: EntityDecoder;
constructor(
{
xmlMode = false,
decodeEntities = true,
}: { xmlMode?: boolean; decodeEntities?: boolean },
private readonly cbs: Callbacks,
) {
this.xmlMode = xmlMode;
this.decodeEntities = decodeEntities;
this.entityDecoder = new EntityDecoder(
xmlMode ? xmlDecodeTree : htmlDecodeTree,
(cp, consumed) => this.emitCodePoint(cp, consumed),
);
}
public reset(): void {
this.state = State.Text;
this.buffer = "";
this.sectionStart = 0;
this.index = 0;
this.baseState = State.Text;
this.currentSequence = undefined!;
this.running = true;
this.offset = 0;
}
public write(chunk: string): void {
this.offset += this.buffer.length;
this.buffer = chunk;
this.parse();
}
public end(): void {
if (this.running) this.finish();
}
public pause(): void {
this.running = false;
}
public resume(): void {
this.running = true;
if (this.index < this.buffer.length + this.offset) {
this.parse();
}
}
private stateText(c: number): void {
if (
c === CharCodes.Lt ||
(!this.decodeEntities && this.fastForwardTo(CharCodes.Lt))
) {
if (this.index > this.sectionStart) {
this.cbs.ontext(this.sectionStart, this.index);
}
this.state = State.BeforeTagName;
this.sectionStart = this.index;
} else if (this.decodeEntities && c === CharCodes.Amp) {
this.startEntity();
}
}
private currentSequence: Uint8Array = undefined!;
private sequenceIndex = 0;
private stateSpecialStartSequence(c: number): void {
const isEnd = this.sequenceIndex === this.currentSequence.length;
const isMatch = isEnd
? // If we are at the end of the sequence, make sure the tag name has ended
isEndOfTagSection(c)
: // Otherwise, do a case-insensitive comparison
(c | 0x20) === this.currentSequence[this.sequenceIndex];
if (!isMatch) {
this.isSpecial = false;
} else if (!isEnd) {
this.sequenceIndex++;
return;
}
this.sequenceIndex = 0;
this.state = State.InTagName;
this.stateInTagName(c);
}
/** Look for an end tag. For <title> tags, also decode entities. */
private stateInSpecialTag(c: number): void {
if (this.sequenceIndex === this.currentSequence.length) {
if (c === CharCodes.Gt || isWhitespace(c)) {
const endOfText = this.index - this.currentSequence.length;
if (this.sectionStart < endOfText) {
// Spoof the index so that reported locations match up.
const actualIndex = this.index;
this.index = endOfText;
this.cbs.ontext(this.sectionStart, endOfText);
this.index = actualIndex;
}
this.isSpecial = false;
this.sectionStart = endOfText + 2; // Skip over the `</`
this.stateInClosingTagName(c);
return; // We are done; skip the rest of the function.
}
this.sequenceIndex = 0;
}
if ((c | 0x20) === this.currentSequence[this.sequenceIndex]) {
this.sequenceIndex += 1;
} else if (this.sequenceIndex === 0) {
if (this.currentSequence === Sequences.TitleEnd) {
// We have to parse entities in <title> tags.
if (this.decodeEntities && c === CharCodes.Amp) {
this.startEntity();
}
} else if (this.fastForwardTo(CharCodes.Lt)) {
// Outside of <title> tags, we can fast-forward.
this.sequenceIndex = 1;
}
} else {
// If we see a `<`, set the sequence index to 1; useful for eg. `<</script>`.
this.sequenceIndex = Number(c === CharCodes.Lt);
}
}
private stateCDATASequence(c: number): void {
if (c === Sequences.Cdata[this.sequenceIndex]) {
if (++this.sequenceIndex === Sequences.Cdata.length) {
this.state = State.InCommentLike;
this.currentSequence = Sequences.CdataEnd;
this.sequenceIndex = 0;
this.sectionStart = this.index + 1;
}
} else {
this.sequenceIndex = 0;
this.state = State.InDeclaration;
this.stateInDeclaration(c); // Reconsume the character
}
}
/**
* 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(c: number): boolean {
while (++this.index < this.buffer.length + this.offset) {
if (this.buffer.charCodeAt(this.index - this.offset) === c) {
return true;
}
}
/*
* We increment the index at the end of the `parse` loop,
* so set it to `buffer.length - 1` here.
*
* TODO: Refactor `parse` to increment index before calling states.
*/
this.index = this.buffer.length + this.offset - 1;
return false;
}
/**
* 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(c: number): void {
if (c === this.currentSequence[this.sequenceIndex]) {
if (++this.sequenceIndex === this.currentSequence.length) {
if (this.currentSequence === Sequences.CdataEnd) {
this.cbs.oncdata(this.sectionStart, this.index, 2);
} else {
this.cbs.oncomment(this.sectionStart, this.index, 2);
}
this.sequenceIndex = 0;
this.sectionStart = this.index + 1;
this.state = State.Text;
}
} else if (this.sequenceIndex === 0) {
// Fast-forward to the first character of the sequence
if (this.fastForwardTo(this.currentSequence[0])) {
this.sequenceIndex = 1;
}
} else if (c !== this.currentSequence[this.sequenceIndex - 1]) {
// Allow long sequences, eg. --->, ]]]>
this.sequenceIndex = 0;
}
}
/**
* 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(c: number) {
return this.xmlMode ? !isEndOfTagSection(c) : isASCIIAlpha(c);
}
private startSpecial(sequence: Uint8Array, offset: number) {
this.isSpecial = true;
this.currentSequence = sequence;
this.sequenceIndex = offset;
this.state = State.SpecialStartSequence;
}
private stateBeforeTagName(c: number): void {
if (c === CharCodes.ExclamationMark) {
this.state = State.BeforeDeclaration;
this.sectionStart = this.index + 1;
} else if (c === CharCodes.Questionmark) {
this.state = State.InProcessingInstruction;
this.sectionStart = this.index + 1;
} else if (this.isTagStartChar(c)) {
const lower = c | 0x20;
this.sectionStart = this.index;
if (this.xmlMode) {
this.state = State.InTagName;
} else if (lower === Sequences.ScriptEnd[2]) {
this.state = State.BeforeSpecialS;
} else if (
lower === Sequences.TitleEnd[2] ||
lower === Sequences.XmpEnd[2]
) {
this.state = State.BeforeSpecialT;
} else {
this.state = State.InTagName;
}
} else if (c === CharCodes.Slash) {
this.state = State.BeforeClosingTagName;
} else {
this.state = State.Text;
this.stateText(c);
}
}
private stateInTagName(c: number): void {
if (isEndOfTagSection(c)) {
this.cbs.onopentagname(this.sectionStart, this.index);
this.sectionStart = -1;
this.state = State.BeforeAttributeName;
this.stateBeforeAttributeName(c);
}
}
private stateBeforeClosingTagName(c: number): void {
if (isWhitespace(c)) {
// Ignore
} else if (c === CharCodes.Gt) {
this.state = State.Text;
} else {
this.state = this.isTagStartChar(c)
? State.InClosingTagName
: State.InSpecialComment;
this.sectionStart = this.index;
}
}
private stateInClosingTagName(c: number): void {
if (c === CharCodes.Gt || isWhitespace(c)) {
this.cbs.onclosetag(this.sectionStart, this.index);
this.sectionStart = -1;
this.state = State.AfterClosingTagName;
this.stateAfterClosingTagName(c);
}
}
private stateAfterClosingTagName(c: number): void {
// Skip everything until ">"
if (c === CharCodes.Gt || this.fastForwardTo(CharCodes.Gt)) {
this.state = State.Text;
this.sectionStart = this.index + 1;
}
}
private stateBeforeAttributeName(c: number): void {
if (c === CharCodes.Gt) {
this.cbs.onopentagend(this.index);
if (this.isSpecial) {
this.state = State.InSpecialTag;
this.sequenceIndex = 0;
} else {
this.state = State.Text;
}
this.sectionStart = this.index + 1;
} else if (c === CharCodes.Slash) {
this.state = State.InSelfClosingTag;
} else if (!isWhitespace(c)) {
this.state = State.InAttributeName;
this.sectionStart = this.index;
}
}
private stateInSelfClosingTag(c: number): void {
if (c === CharCodes.Gt) {
this.cbs.onselfclosingtag(this.index);
this.state = State.Text;
this.sectionStart = this.index + 1;
this.isSpecial = false; // Reset special state, in case of self-closing special tags
} else if (!isWhitespace(c)) {
this.state = State.BeforeAttributeName;
this.stateBeforeAttributeName(c);
}
}
private stateInAttributeName(c: number): void {
if (c === CharCodes.Eq || isEndOfTagSection(c)) {
this.cbs.onattribname(this.sectionStart, this.index);
this.sectionStart = this.index;
this.state = State.AfterAttributeName;
this.stateAfterAttributeName(c);
}
}
private stateAfterAttributeName(c: number): void {
if (c === CharCodes.Eq) {
this.state = State.BeforeAttributeValue;
} else if (c === CharCodes.Slash || c === CharCodes.Gt) {
this.cbs.onattribend(QuoteType.NoValue, this.sectionStart);
this.sectionStart = -1;
this.state = State.BeforeAttributeName;
this.stateBeforeAttributeName(c);
} else if (!isWhitespace(c)) {
this.cbs.onattribend(QuoteType.NoValue, this.sectionStart);
this.state = State.InAttributeName;
this.sectionStart = this.index;
}
}
private stateBeforeAttributeValue(c: number): void {
if (c === CharCodes.DoubleQuote) {
this.state = State.InAttributeValueDq;
this.sectionStart = this.index + 1;
} else if (c === CharCodes.SingleQuote) {
this.state = State.InAttributeValueSq;
this.sectionStart = this.index + 1;
} else if (!isWhitespace(c)) {
this.sectionStart = this.index;
this.state = State.InAttributeValueNq;
this.stateInAttributeValueNoQuotes(c); // Reconsume token
}
}
private handleInAttributeValue(c: number, quote: number) {
if (
c === quote ||
(!this.decodeEntities && this.fastForwardTo(quote))
) {
this.cbs.onattribdata(this.sectionStart, this.index);
this.sectionStart = -1;
this.cbs.onattribend(
quote === CharCodes.DoubleQuote
? QuoteType.Double
: QuoteType.Single,
this.index + 1,
);
this.state = State.BeforeAttributeName;
} else if (this.decodeEntities && c === CharCodes.Amp) {
this.startEntity();
}
}
private stateInAttributeValueDoubleQuotes(c: number): void {
this.handleInAttributeValue(c, CharCodes.DoubleQuote);
}
private stateInAttributeValueSingleQuotes(c: number): void {
this.handleInAttributeValue(c, CharCodes.SingleQuote);
}
private stateInAttributeValueNoQuotes(c: number): void {
if (isWhitespace(c) || c === CharCodes.Gt) {
this.cbs.onattribdata(this.sectionStart, this.index);
this.sectionStart = -1;
this.cbs.onattribend(QuoteType.Unquoted, this.index);
this.state = State.BeforeAttributeName;
this.stateBeforeAttributeName(c);
} else if (this.decodeEntities && c === CharCodes.Amp) {
this.startEntity();
}
}
private stateBeforeDeclaration(c: number): void {
if (c === CharCodes.OpeningSquareBracket) {
this.state = State.CDATASequence;
this.sequenceIndex = 0;
} else {
this.state =
c === CharCodes.Dash
? State.BeforeComment
: State.InDeclaration;
}
}
private stateInDeclaration(c: number): void {
if (c === CharCodes.Gt || this.fastForwardTo(CharCodes.Gt)) {
this.cbs.ondeclaration(this.sectionStart, this.index);
this.state = State.Text;
this.sectionStart = this.index + 1;
}
}
private stateInProcessingInstruction(c: number): void {
if (c === CharCodes.Gt || this.fastForwardTo(CharCodes.Gt)) {
this.cbs.onprocessinginstruction(this.sectionStart, this.index);
this.state = State.Text;
this.sectionStart = this.index + 1;
}
}
private stateBeforeComment(c: number): void {
if (c === CharCodes.Dash) {
this.state = State.InCommentLike;
this.currentSequence = Sequences.CommentEnd;
// Allow short comments (eg. <!-->)
this.sequenceIndex = 2;
this.sectionStart = this.index + 1;
} else {
this.state = State.InDeclaration;
}
}
private stateInSpecialComment(c: number): void {
if (c === CharCodes.Gt || this.fastForwardTo(CharCodes.Gt)) {
this.cbs.oncomment(this.sectionStart, this.index, 0);
this.state = State.Text;
this.sectionStart = this.index + 1;
}
}
private stateBeforeSpecialS(c: number): void {
const lower = c | 0x20;
if (lower === Sequences.ScriptEnd[3]) {
this.startSpecial(Sequences.ScriptEnd, 4);
} else if (lower === Sequences.StyleEnd[3]) {
this.startSpecial(Sequences.StyleEnd, 4);
} else {
this.state = State.InTagName;
this.stateInTagName(c); // Consume the token again
}
}
private stateBeforeSpecialT(c: number): void {
const lower = c | 0x20;
switch (lower) {
case Sequences.TitleEnd[3]: {
this.startSpecial(Sequences.TitleEnd, 4);
break;
}
case Sequences.TextareaEnd[3]: {
this.startSpecial(Sequences.TextareaEnd, 4);
break;
}
case Sequences.XmpEnd[3]: {
this.startSpecial(Sequences.XmpEnd, 4);
break;
}
default: {
this.state = State.InTagName;
this.stateInTagName(c); // Consume the token again
}
}
}
private startEntity() {
this.baseState = this.state;
this.state = State.InEntity;
this.entityStart = this.index;
this.entityDecoder.startEntity(
this.xmlMode
? DecodingMode.Strict
: this.baseState === State.Text ||
this.baseState === State.InSpecialTag
? DecodingMode.Legacy
: DecodingMode.Attribute,
);
}
private stateInEntity(): void {
const length = this.entityDecoder.write(
this.buffer,
this.index - this.offset,
);
// If `length` is positive, we are done with the entity.
if (length >= 0) {
this.state = this.baseState;
if (length === 0) {
this.index = this.entityStart;
}
} else {
// Mark buffer as consumed.
this.index = this.offset + this.buffer.length - 1;
}
}
/**
* Remove data that has already been consumed from the buffer.
*/
private cleanup() {
// If we are inside of text or attributes, emit what we already have.
if (this.running && this.sectionStart !== this.index) {
if (
this.state === State.Text ||
(this.state === State.InSpecialTag && this.sequenceIndex === 0)
) {
this.cbs.ontext(this.sectionStart, this.index);
this.sectionStart = this.index;
} else if (
this.state === State.InAttributeValueDq ||
this.state === State.InAttributeValueSq ||
this.state === State.InAttributeValueNq
) {
this.cbs.onattribdata(this.sectionStart, this.index);
this.sectionStart = this.index;
}
}
}
private shouldContinue() {
return this.index < this.buffer.length + this.offset && this.running;
}
/**
* 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() {
while (this.shouldContinue()) {
const c = this.buffer.charCodeAt(this.index - this.offset);
switch (this.state) {
case State.Text: {
this.stateText(c);
break;
}
case State.SpecialStartSequence: {
this.stateSpecialStartSequence(c);
break;
}
case State.InSpecialTag: {
this.stateInSpecialTag(c);
break;
}
case State.CDATASequence: {
this.stateCDATASequence(c);
break;
}
case State.InAttributeValueDq: {
this.stateInAttributeValueDoubleQuotes(c);
break;
}
case State.InAttributeName: {
this.stateInAttributeName(c);
break;
}
case State.InCommentLike: {
this.stateInCommentLike(c);
break;
}
case State.InSpecialComment: {
this.stateInSpecialComment(c);
break;
}
case State.BeforeAttributeName: {
this.stateBeforeAttributeName(c);
break;
}
case State.InTagName: {
this.stateInTagName(c);
break;
}
case State.InClosingTagName: {
this.stateInClosingTagName(c);
break;
}
case State.BeforeTagName: {
this.stateBeforeTagName(c);
break;
}
case State.AfterAttributeName: {
this.stateAfterAttributeName(c);
break;
}
case State.InAttributeValueSq: {
this.stateInAttributeValueSingleQuotes(c);
break;
}
case State.BeforeAttributeValue: {
this.stateBeforeAttributeValue(c);
break;
}
case State.BeforeClosingTagName: {
this.stateBeforeClosingTagName(c);
break;
}
case State.AfterClosingTagName: {
this.stateAfterClosingTagName(c);
break;
}
case State.BeforeSpecialS: {
this.stateBeforeSpecialS(c);
break;
}
case State.BeforeSpecialT: {
this.stateBeforeSpecialT(c);
break;
}
case State.InAttributeValueNq: {
this.stateInAttributeValueNoQuotes(c);
break;
}
case State.InSelfClosingTag: {
this.stateInSelfClosingTag(c);
break;
}
case State.InDeclaration: {
this.stateInDeclaration(c);
break;
}
case State.BeforeDeclaration: {
this.stateBeforeDeclaration(c);
break;
}
case State.BeforeComment: {
this.stateBeforeComment(c);
break;
}
case State.InProcessingInstruction: {
this.stateInProcessingInstruction(c);
break;
}
case State.InEntity: {
this.stateInEntity();
break;
}
}
this.index++;
}
this.cleanup();
}
private finish() {
if (this.state === State.InEntity) {
this.entityDecoder.end();
this.state = this.baseState;
}
this.handleTrailingData();
this.cbs.onend();
}
/** Handle any trailing data. */
private handleTrailingData() {
const endIndex = this.buffer.length + this.offset;
// If there is no remaining data, we are done.
if (this.sectionStart >= endIndex) {
return;
}
if (this.state === State.InCommentLike) {
if (this.currentSequence === Sequences.CdataEnd) {
this.cbs.oncdata(this.sectionStart, endIndex, 0);
} else {
this.cbs.oncomment(this.sectionStart, endIndex, 0);
}
} else if (
this.state === State.InTagName ||
this.state === State.BeforeAttributeName ||
this.state === State.BeforeAttributeValue ||
this.state === State.AfterAttributeName ||
this.state === State.InAttributeName ||
this.state === State.InAttributeValueSq ||
this.state === State.InAttributeValueDq ||
this.state === State.InAttributeValueNq ||
this.state === State.InClosingTagName
) {
/*
* If we are currently in an opening or closing tag, us not calling the
* respective callback signals that the tag should be ignored.
*/
} else {
this.cbs.ontext(this.sectionStart, endIndex);
}
}
private emitCodePoint(cp: number, consumed: number): void {
if (
this.baseState !== State.Text &&
this.baseState !== State.InSpecialTag
) {
if (this.sectionStart < this.entityStart) {
this.cbs.onattribdata(this.sectionStart, this.entityStart);
}
this.sectionStart = this.entityStart + consumed;
this.index = this.sectionStart - 1;
this.cbs.onattribentity(cp);
} else {
if (this.sectionStart < this.entityStart) {
this.cbs.ontext(this.sectionStart, this.entityStart);
}
this.sectionStart = this.entityStart + consumed;
this.index = this.sectionStart - 1;
this.cbs.ontextentity(cp, this.sectionStart);
}
}
}