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re ##42260. cache for last visited line content.

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This commit is contained in:
Peng Lyu 2018-02-27 14:13:17 -08:00
parent 020afb768d
commit 1d5d103f8a
1 changed files with 18 additions and 5 deletions
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23
src/vs/editor/common/model/pieceTreeTextBuffer/pieceTreeBase.ts
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@ -266,6 +266,7 @@ export class PieceTreeBase {
protected _EOLNormalized: boolean;
private _lastChangeBufferPos: BufferCursor;
private _searchCache: PieceTreeSearchCache;
private _lastVisitedLine: { lineNumber: number, value: string };
constructor(chunks: StringBuffer[], eol: '\r\n' | '\n', eolNormalized: boolean) {
this.create(chunks, eol, eolNormalized);
@ -303,6 +304,7 @@ export class PieceTreeBase {
}
this._searchCache = new PieceTreeSearchCache(1);
this._lastVisitedLine = { lineNumber: 0, value: null };
this.computeBufferMetadata();
}
@ -499,15 +501,21 @@ export class PieceTreeBase {
}
public getLineContent(lineNumber): string {
if (lineNumber === this._lineCnt) {
return this.getLineRawContent(lineNumber);
if (this._lastVisitedLine.lineNumber === lineNumber) {
return this._lastVisitedLine.value;
}
if (this._EOLNormalized) {
return this.getLineRawContent(lineNumber, this._EOLLength);
this._lastVisitedLine.lineNumber = lineNumber;
if (lineNumber === this._lineCnt) {
this._lastVisitedLine.value = this.getLineRawContent(lineNumber);
} else if (this._EOLNormalized) {
this._lastVisitedLine.value = this.getLineRawContent(lineNumber, this._EOLLength);
} else {
return this.getLineRawContent(lineNumber).replace(/(\r\n|\r|\n)$/, '');
this._lastVisitedLine.value = this.getLineRawContent(lineNumber).replace(/(\r\n|\r|\n)$/, '');
}
return this._lastVisitedLine.value;
}
public getLineCharCode(lineNumber: number, index: number): number {
@ -532,6 +540,8 @@ export class PieceTreeBase {
// #region Piece Table
insert(offset: number, value: string, eolNormalized: boolean = false): void {
this._EOLNormalized = this._EOLNormalized && eolNormalized;
this._lastVisitedLine.lineNumber = 0;
this._lastVisitedLine.value = null;
if (this.root !== SENTINEL) {
let { node, remainder, nodeStartOffset } = this.nodeAt(offset);
@ -613,6 +623,9 @@ export class PieceTreeBase {
}
delete(offset: number, cnt: number): void {
this._lastVisitedLine.lineNumber = 0;
this._lastVisitedLine.value = null;
if (cnt <= 0 || this.root === SENTINEL) {
return;
}