mirror of
https://github.com/Microsoft/vscode
synced 2024-08-27 21:09:43 +00:00
Remove ChunksTextBuffer
This commit is contained in:
parent
ef7763a2d5
commit
805d0785aa
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@ -1,323 +0,0 @@
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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'use strict';
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import { CharCode } from 'vs/base/common/charCode';
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export class LeafOffsetLenEdit {
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constructor(
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public readonly start: number,
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public readonly length: number,
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public readonly text: string
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) { }
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}
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export class BufferPiece {
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private readonly _str: string;
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public get text(): string { return this._str; }
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private readonly _lineStarts: Uint32Array;
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constructor(str: string, lineStarts: Uint32Array = null) {
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this._str = str;
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if (lineStarts === null) {
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this._lineStarts = createLineStartsFast(str);
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} else {
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this._lineStarts = lineStarts;
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}
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}
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public length(): number {
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return this._str.length;
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}
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public newLineCount(): number {
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return this._lineStarts.length;
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}
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public lineStartFor(relativeLineIndex: number): number {
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return this._lineStarts[relativeLineIndex];
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}
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public charCodeAt(index: number): number {
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return this._str.charCodeAt(index);
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}
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public substr(from: number, length: number): string {
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return this._str.substr(from, length);
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}
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public findLineStartBeforeOffset(offset: number): number {
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if (this._lineStarts.length === 0 || offset < this._lineStarts[0]) {
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return -1;
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}
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let low = 0, high = this._lineStarts.length - 1;
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while (low < high) {
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let mid = low + Math.ceil((high - low) / 2);
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let lineStart = this._lineStarts[mid];
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if (offset === lineStart) {
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return mid;
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} else if (offset < lineStart) {
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high = mid - 1;
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} else {
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low = mid;
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}
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}
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return low;
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}
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public findLineFirstNonWhitespaceIndex(searchStartOffset: number): number {
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for (let i = searchStartOffset, len = this._str.length; i < len; i++) {
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const chCode = this._str.charCodeAt(i);
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if (chCode === CharCode.CarriageReturn || chCode === CharCode.LineFeed) {
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// Reached EOL
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return -2;
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}
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if (chCode !== CharCode.Space && chCode !== CharCode.Tab) {
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return i;
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}
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}
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return -1;
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}
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public findLineLastNonWhitespaceIndex(searchStartOffset: number): number {
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for (let i = searchStartOffset - 1; i >= 0; i--) {
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const chCode = this._str.charCodeAt(i);
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if (chCode === CharCode.CarriageReturn || chCode === CharCode.LineFeed) {
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// Reached EOL
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return -2;
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}
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if (chCode !== CharCode.Space && chCode !== CharCode.Tab) {
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return i;
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}
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}
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return -1;
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}
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public static normalizeEOL(target: BufferPiece, eol: '\r\n' | '\n'): BufferPiece {
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return new BufferPiece(target._str.replace(/\r\n|\r|\n/g, eol));
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}
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public static deleteLastChar(target: BufferPiece): BufferPiece {
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const targetCharsLength = target.length();
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const targetLineStartsLength = target.newLineCount();
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const targetLineStarts = target._lineStarts;
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let newLineStartsLength;
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if (targetLineStartsLength > 0 && targetLineStarts[targetLineStartsLength - 1] === targetCharsLength) {
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newLineStartsLength = targetLineStartsLength - 1;
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} else {
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newLineStartsLength = targetLineStartsLength;
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}
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let newLineStarts = new Uint32Array(newLineStartsLength);
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newLineStarts.set(targetLineStarts);
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return new BufferPiece(
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target._str.substr(0, targetCharsLength - 1),
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newLineStarts
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);
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}
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public static insertFirstChar(target: BufferPiece, character: number): BufferPiece {
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const targetLineStartsLength = target.newLineCount();
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const targetLineStarts = target._lineStarts;
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const insertLineStart = ((character === CharCode.CarriageReturn && (targetLineStartsLength === 0 || targetLineStarts[0] !== 1 || target.charCodeAt(0) !== CharCode.LineFeed)) || (character === CharCode.LineFeed));
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const newLineStartsLength = (insertLineStart ? targetLineStartsLength + 1 : targetLineStartsLength);
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let newLineStarts = new Uint32Array(newLineStartsLength);
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if (insertLineStart) {
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newLineStarts[0] = 1;
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for (let i = 0; i < targetLineStartsLength; i++) {
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newLineStarts[i + 1] = targetLineStarts[i] + 1;
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}
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} else {
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for (let i = 0; i < targetLineStartsLength; i++) {
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newLineStarts[i] = targetLineStarts[i] + 1;
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}
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}
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return new BufferPiece(
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String.fromCharCode(character) + target._str,
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newLineStarts
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);
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}
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public static join(first: BufferPiece, second: BufferPiece): BufferPiece {
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const firstCharsLength = first._str.length;
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const firstLineStartsLength = first._lineStarts.length;
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const secondLineStartsLength = second._lineStarts.length;
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const firstLineStarts = first._lineStarts;
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const secondLineStarts = second._lineStarts;
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const newLineStartsLength = firstLineStartsLength + secondLineStartsLength;
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let newLineStarts = new Uint32Array(newLineStartsLength);
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newLineStarts.set(firstLineStarts, 0);
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for (let i = 0; i < secondLineStartsLength; i++) {
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newLineStarts[i + firstLineStartsLength] = secondLineStarts[i] + firstCharsLength;
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}
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return new BufferPiece(first._str + second._str, newLineStarts);
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}
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public static replaceOffsetLen(target: BufferPiece, edits: LeafOffsetLenEdit[], idealLeafLength: number, maxLeafLength: number, result: BufferPiece[]): void {
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const editsSize = edits.length;
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const originalCharsLength = target.length();
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if (editsSize === 1 && edits[0].text.length === 0 && edits[0].start === 0 && edits[0].length === originalCharsLength) {
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// special case => deleting everything
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return;
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}
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let pieces: string[] = new Array<string>(2 * editsSize + 1);
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let originalFromIndex = 0;
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let piecesTextLength = 0;
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for (let i = 0; i < editsSize; i++) {
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const edit = edits[i];
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const originalText = target._str.substr(originalFromIndex, edit.start - originalFromIndex);
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pieces[2 * i] = originalText;
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piecesTextLength += originalText.length;
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originalFromIndex = edit.start + edit.length;
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pieces[2 * i + 1] = edit.text;
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piecesTextLength += edit.text.length;
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}
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// maintain the chars that survive to the right of the last edit
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let text = target._str.substr(originalFromIndex, originalCharsLength - originalFromIndex);
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pieces[2 * editsSize] = text;
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piecesTextLength += text.length;
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let targetDataLength = piecesTextLength > maxLeafLength ? idealLeafLength : piecesTextLength;
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let targetDataOffset = 0;
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let data: string = '';
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for (let pieceIndex = 0, pieceCount = pieces.length; pieceIndex < pieceCount; pieceIndex++) {
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const pieceText = pieces[pieceIndex];
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const pieceLength = pieceText.length;
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if (pieceLength === 0) {
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continue;
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}
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let pieceOffset = 0;
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while (pieceOffset < pieceLength) {
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if (targetDataOffset >= targetDataLength) {
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result.push(new BufferPiece(data));
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targetDataLength = piecesTextLength > maxLeafLength ? idealLeafLength : piecesTextLength;
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targetDataOffset = 0;
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data = '';
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}
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let writingCnt = min(pieceLength - pieceOffset, targetDataLength - targetDataOffset);
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data += pieceText.substr(pieceOffset, writingCnt);
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pieceOffset += writingCnt;
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targetDataOffset += writingCnt;
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piecesTextLength -= writingCnt;
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// check that the buffer piece does not end in a \r or high surrogate
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if (targetDataOffset === targetDataLength && piecesTextLength > 0) {
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const lastChar = data.charCodeAt(targetDataLength - 1);
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if (lastChar === CharCode.CarriageReturn || (0xD800 <= lastChar && lastChar <= 0xDBFF)) {
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// move lastChar over to next buffer piece
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targetDataLength -= 1;
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pieceOffset -= 1;
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targetDataOffset -= 1;
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piecesTextLength += 1;
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data = data.substr(0, data.length - 1);
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}
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}
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}
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}
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result.push(new BufferPiece(data));
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}
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}
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function min(a: number, b: number): number {
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return (a < b ? a : b);
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}
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export function createUint32Array(arr: number[]): Uint32Array {
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let r = new Uint32Array(arr.length);
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r.set(arr, 0);
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return r;
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}
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export class LineStarts {
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constructor(
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public readonly lineStarts: Uint32Array,
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public readonly cr: number,
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public readonly lf: number,
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public readonly crlf: number,
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public readonly isBasicASCII: boolean
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) { }
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}
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export function createLineStartsFast(str: string): Uint32Array {
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let r: number[] = [], rLength = 0;
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for (let i = 0, len = str.length; i < len; i++) {
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const chr = str.charCodeAt(i);
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if (chr === CharCode.CarriageReturn) {
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if (i + 1 < len && str.charCodeAt(i + 1) === CharCode.LineFeed) {
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// \r\n... case
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r[rLength++] = i + 2;
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i++; // skip \n
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} else {
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// \r... case
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r[rLength++] = i + 1;
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}
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} else if (chr === CharCode.LineFeed) {
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r[rLength++] = i + 1;
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}
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}
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return createUint32Array(r);
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}
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export function createLineStarts(r: number[], str: string): LineStarts {
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r.length = 0;
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let rLength = 0;
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let cr = 0, lf = 0, crlf = 0;
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let isBasicASCII = true;
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for (let i = 0, len = str.length; i < len; i++) {
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const chr = str.charCodeAt(i);
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if (chr === CharCode.CarriageReturn) {
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if (i + 1 < len && str.charCodeAt(i + 1) === CharCode.LineFeed) {
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// \r\n... case
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crlf++;
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r[rLength++] = i + 2;
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i++; // skip \n
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} else {
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cr++;
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// \r... case
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r[rLength++] = i + 1;
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}
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} else if (chr === CharCode.LineFeed) {
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lf++;
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r[rLength++] = i + 1;
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} else {
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if (isBasicASCII) {
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if (chr !== CharCode.Tab && (chr < 32 || chr > 126)) {
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isBasicASCII = false;
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}
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}
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}
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}
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const result = new LineStarts(createUint32Array(r), cr, lf, crlf, isBasicASCII);
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r.length = 0;
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return result;
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}
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File diff suppressed because it is too large
Load diff
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@ -1,186 +0,0 @@
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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'use strict';
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import * as strings from 'vs/base/common/strings';
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import { ITextBufferBuilder, ITextBufferFactory, ITextBuffer, DefaultEndOfLine } from 'vs/editor/common/model';
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import { BufferPiece, createLineStarts } from 'vs/editor/common/model/chunksTextBuffer/bufferPiece';
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import { ChunksTextBuffer } from 'vs/editor/common/model/chunksTextBuffer/chunksTextBuffer';
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import { CharCode } from 'vs/base/common/charCode';
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export class TextBufferFactory implements ITextBufferFactory {
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constructor(
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private readonly _pieces: BufferPiece[],
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private readonly _averageChunkSize: number,
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private readonly _BOM: string,
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private readonly _cr: number,
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private readonly _lf: number,
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private readonly _crlf: number,
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private readonly _containsRTL: boolean,
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private readonly _isBasicASCII: boolean,
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) {
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}
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/**
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* if text source is empty or with precisely one line, returns null. No end of line is detected.
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* if text source contains more lines ending with '\r\n', returns '\r\n'.
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* Otherwise returns '\n'. More lines end with '\n'.
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*/
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private _getEOL(defaultEOL: DefaultEndOfLine): '\r\n' | '\n' {
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const totalEOLCount = this._cr + this._lf + this._crlf;
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const totalCRCount = this._cr + this._crlf;
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if (totalEOLCount === 0) {
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// This is an empty file or a file with precisely one line
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return (defaultEOL === DefaultEndOfLine.LF ? '\n' : '\r\n');
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}
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if (totalCRCount > totalEOLCount / 2) {
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// More than half of the file contains \r\n ending lines
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return '\r\n';
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}
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// At least one line more ends in \n
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return '\n';
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}
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public create(defaultEOL: DefaultEndOfLine): ITextBuffer {
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const eol = this._getEOL(defaultEOL);
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let pieces = this._pieces;
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if (
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(eol === '\r\n' && (this._cr > 0 || this._lf > 0))
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|| (eol === '\n' && (this._cr > 0 || this._crlf > 0))
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) {
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// Normalize pieces
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for (let i = 0, len = pieces.length; i < len; i++) {
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pieces[i] = BufferPiece.normalizeEOL(pieces[i], eol);
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}
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}
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return new ChunksTextBuffer(pieces, this._averageChunkSize, this._BOM, eol, this._containsRTL, this._isBasicASCII);
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}
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public getFirstLineText(lengthLimit: number): string {
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const firstPiece = this._pieces[0];
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if (firstPiece.newLineCount() === 0) {
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return firstPiece.substr(0, lengthLimit);
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}
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const firstEOLOffset = firstPiece.lineStartFor(0);
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return firstPiece.substr(0, Math.min(lengthLimit, firstEOLOffset));
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}
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}
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export class ChunksTextBufferBuilder implements ITextBufferBuilder {
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private _rawPieces: BufferPiece[];
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private _hasPreviousChar: boolean;
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private _previousChar: number;
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private _averageChunkSize: number;
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private _tmpLineStarts: number[];
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private BOM: string;
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private cr: number;
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private lf: number;
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private crlf: number;
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private containsRTL: boolean;
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private isBasicASCII: boolean;
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constructor() {
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this._rawPieces = [];
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this._hasPreviousChar = false;
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this._previousChar = 0;
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this._averageChunkSize = 0;
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this._tmpLineStarts = [];
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this.BOM = '';
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this.cr = 0;
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this.lf = 0;
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this.crlf = 0;
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this.containsRTL = false;
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this.isBasicASCII = true;
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}
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public acceptChunk(chunk: string): void {
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if (chunk.length === 0) {
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return;
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}
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if (this._rawPieces.length === 0) {
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if (strings.startsWithUTF8BOM(chunk)) {
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this.BOM = strings.UTF8_BOM_CHARACTER;
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chunk = chunk.substr(1);
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}
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}
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this._averageChunkSize = (this._averageChunkSize * this._rawPieces.length + chunk.length) / (this._rawPieces.length + 1);
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const lastChar = chunk.charCodeAt(chunk.length - 1);
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if (lastChar === CharCode.CarriageReturn || (lastChar >= 0xd800 && lastChar <= 0xdbff)) {
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// last character is \r or a high surrogate => keep it back
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this._acceptChunk1(chunk.substr(0, chunk.length - 1), false);
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this._hasPreviousChar = true;
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this._previousChar = lastChar;
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} else {
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this._acceptChunk1(chunk, false);
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this._hasPreviousChar = false;
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this._previousChar = lastChar;
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}
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}
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private _acceptChunk1(chunk: string, allowEmptyStrings: boolean): void {
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if (!allowEmptyStrings && chunk.length === 0) {
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// Nothing to do
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return;
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}
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if (this._hasPreviousChar) {
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this._acceptChunk2(chunk + String.fromCharCode(this._previousChar));
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} else {
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this._acceptChunk2(chunk);
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}
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}
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private _acceptChunk2(chunk: string): void {
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const lineStarts = createLineStarts(this._tmpLineStarts, chunk);
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this._rawPieces.push(new BufferPiece(chunk, lineStarts.lineStarts));
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this.cr += lineStarts.cr;
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this.lf += lineStarts.lf;
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this.crlf += lineStarts.crlf;
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if (this.isBasicASCII) {
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this.isBasicASCII = lineStarts.isBasicASCII;
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}
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if (!this.isBasicASCII && !this.containsRTL) {
|
||||
// No need to check if is basic ASCII
|
||||
this.containsRTL = strings.containsRTL(chunk);
|
||||
}
|
||||
}
|
||||
|
||||
public finish(): TextBufferFactory {
|
||||
this._finish();
|
||||
return new TextBufferFactory(this._rawPieces, this._averageChunkSize, this.BOM, this.cr, this.lf, this.crlf, this.containsRTL, this.isBasicASCII);
|
||||
}
|
||||
|
||||
private _finish(): void {
|
||||
if (this._rawPieces.length === 0) {
|
||||
// no chunks => forcefully go through accept chunk
|
||||
this._acceptChunk1('', true);
|
||||
return;
|
||||
}
|
||||
|
||||
if (this._hasPreviousChar) {
|
||||
this._hasPreviousChar = false;
|
||||
|
||||
// recreate last chunk
|
||||
const lastPiece = this._rawPieces[this._rawPieces.length - 1];
|
||||
const tmp = new BufferPiece(String.fromCharCode(this._previousChar));
|
||||
const newLastPiece = BufferPiece.join(lastPiece, tmp);
|
||||
this._rawPieces[this._rawPieces.length - 1] = newLastPiece;
|
||||
if (this._previousChar === CharCode.CarriageReturn) {
|
||||
this.cr++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
|
@ -35,12 +35,10 @@ import { TPromise } from 'vs/base/common/winjs.base';
|
|||
import { IStringStream, ITextSnapshot } from 'vs/platform/files/common/files';
|
||||
import { LinesTextBufferBuilder } from 'vs/editor/common/model/linesTextBuffer/linesTextBufferBuilder';
|
||||
import { PieceTreeTextBufferBuilder } from 'vs/editor/common/model/pieceTreeTextBuffer/pieceTreeTextBufferBuilder';
|
||||
import { ChunksTextBufferBuilder } from 'vs/editor/common/model/chunksTextBuffer/chunksTextBufferBuilder';
|
||||
|
||||
export enum TextBufferType {
|
||||
LinesArray,
|
||||
PieceTree,
|
||||
Chunks
|
||||
PieceTree
|
||||
}
|
||||
// Here is the master switch for the text buffer implementation:
|
||||
export const OPTIONS = {
|
||||
|
@ -51,9 +49,6 @@ function createTextBufferBuilder() {
|
|||
if (OPTIONS.TEXT_BUFFER_IMPLEMENTATION === TextBufferType.PieceTree) {
|
||||
return new PieceTreeTextBufferBuilder();
|
||||
}
|
||||
if (OPTIONS.TEXT_BUFFER_IMPLEMENTATION === TextBufferType.Chunks) {
|
||||
return new ChunksTextBufferBuilder();
|
||||
}
|
||||
return new LinesTextBufferBuilder();
|
||||
}
|
||||
|
||||
|
|
|
@ -6,7 +6,6 @@
|
|||
import { ITextBufferBuilder, ITextBufferFactory, ITextBuffer, DefaultEndOfLine } from 'vs/editor/common/model';
|
||||
import { LinesTextBufferBuilder } from 'vs/editor/common/model/linesTextBuffer/linesTextBufferBuilder';
|
||||
import { PieceTreeTextBufferBuilder } from 'vs/editor/common/model/pieceTreeTextBuffer/pieceTreeTextBufferBuilder';
|
||||
import { ChunksTextBufferBuilder } from 'vs/editor/common/model/chunksTextBuffer/chunksTextBufferBuilder';
|
||||
|
||||
export function doBenchmark<T>(id: string, ts: T[], fn: (t: T) => void) {
|
||||
let columns: string[] = [id];
|
||||
|
@ -57,7 +56,7 @@ export class BenchmarkSuite {
|
|||
for (let i = 0; i < this.benchmarks.length; i++) {
|
||||
let benchmark = this.benchmarks[i];
|
||||
let columns: string[] = [benchmark.name];
|
||||
[new LinesTextBufferBuilder(), new PieceTreeTextBufferBuilder(), new ChunksTextBufferBuilder()].forEach((builder: ITextBufferBuilder) => {
|
||||
[new LinesTextBufferBuilder(), new PieceTreeTextBufferBuilder()].forEach((builder: ITextBufferBuilder) => {
|
||||
let timeDiffTotal = 0.0;
|
||||
for (let j = 0; j < this.iterations; j++) {
|
||||
let factory = benchmark.buildBuffer(builder);
|
||||
|
|
|
@ -1,61 +0,0 @@
|
|||
/*---------------------------------------------------------------------------------------------
|
||||
* Copyright (c) Microsoft Corporation. All rights reserved.
|
||||
* Licensed under the MIT License. See License.txt in the project root for license information.
|
||||
*--------------------------------------------------------------------------------------------*/
|
||||
|
||||
'use strict';
|
||||
|
||||
import * as assert from 'assert';
|
||||
import { BufferPiece } from 'vs/editor/common/model/chunksTextBuffer/bufferPiece';
|
||||
|
||||
suite('BufferPiece', () => {
|
||||
test('findLineStartBeforeOffset', () => {
|
||||
let piece = new BufferPiece([
|
||||
'Line1\r\n',
|
||||
'l2\n',
|
||||
'another\r',
|
||||
'and\r\n',
|
||||
'finally\n',
|
||||
'last'
|
||||
].join(''));
|
||||
|
||||
assert.equal(piece.length(), 35);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(0), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(1), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(2), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(3), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(4), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(5), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(6), -1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(7), 0);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(8), 0);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(9), 0);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(10), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(11), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(12), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(13), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(14), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(15), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(16), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(17), 1);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(18), 2);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(19), 2);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(20), 2);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(21), 2);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(22), 2);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(23), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(24), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(25), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(26), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(27), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(28), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(29), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(30), 3);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(31), 4);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(32), 4);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(33), 4);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(34), 4);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(35), 4);
|
||||
assert.deepEqual(piece.findLineStartBeforeOffset(36), 4);
|
||||
});
|
||||
});
|
Loading…
Reference in a new issue