public _updateTokensUntilLine(buffer: ITextBuffer, eventBuilder: ModelTokensChangedEventBuilder, lineNumber: number): void {
if (!this.tokenizationSupport) {
this._invalidLineStartIndex = buffer.getLineCount();
return;
}
const linesLength = buffer.getLineCount();
const endLineIndex = lineNumber - 1;
// Validate all states up to and including endLineIndex
for (let lineIndex = this._invalidLineStartIndex; lineIndex <= endLineIndex; lineIndex++) {
const endStateIndex = lineIndex + 1;
let r: TokenizationResult2 = null;
const text = buffer.getLineContent(lineIndex + 1);
try {
// Tokenize only the first X characters
let freshState = this._getState(lineIndex).clone();
r = this.tokenizationSupport.tokenize2(text, freshState, 0);
} catch (e) {
onUnexpectedError(e);
}
if (!r) {
r = nullTokenize2(this.languageIdentifier.id, text, this._getState(lineIndex), 0);
}
this._setTokens(this.languageIdentifier.id, lineIndex, text.length, r.tokens);
eventBuilder.registerChangedTokens(lineIndex + 1);
this._setIsInvalid(lineIndex, false);
if (endStateIndex < linesLength) {
if (this._getState(endStateIndex) !== null && r.endState.equals(this._getState(endStateIndex))) {
// The end state of this line remains the same
let nextInvalidLineIndex = lineIndex + 1;
while (nextInvalidLineIndex < linesLength) {
if (this._isInvalid(nextInvalidLineIndex)) {
break;
}
if (nextInvalidLineIndex + 1 < linesLength) {
if (this._getState(nextInvalidLineIndex + 1) === null) {
break;
}
} else {
if (this._lastState === null) {
break;
}
}
nextInvalidLineIndex++;
}
this._invalidLineStartIndex = Math.max(this._invalidLineStartIndex, nextInvalidLineIndex);
lineIndex = nextInvalidLineIndex - 1; // -1 because the outer loop increments it
} else {
this._setState(endStateIndex, r.endState);
}
} else {
this._lastState = r.endState;
}
}
this._invalidLineStartIndex = Math.max(this._invalidLineStartIndex, endLineIndex + 1);
}
public _tokenizeText(buffer: ITextBuffer, text: string, state: IState): TokenizationResult2 {
let r: TokenizationResult2 = null;
try {
r = this.tokenizationSupport.tokenize2(text, state, 0);
} catch (e) {
onUnexpectedError(e);
}
if (!r) {
r = nullTokenize2(this.languageIdentifier.id, text, state, 0);
}
return r;
}
tokenize2: (buffer: string, state: IState, deltaOffset: number) => nullTokenize2(LanguageId.Null, buffer, state, deltaOffset)