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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as types from 'vs/workbench/api/common/extHostTypes';
import * as vscode from 'vscode';
import { Event, Emitter } from 'vs/base/common/event';
import { ExtHostDocuments } from 'vs/workbench/api/common/extHostDocuments';
import { PrefixSumComputer } from 'vs/editor/common/model/prefixSumComputer';
import { DisposableStore } from 'vs/base/common/lifecycle';
import { score } from 'vs/editor/common/languageSelector';
import { ResourceMap } from 'vs/base/common/map';
import { URI } from 'vs/base/common/uri';
import { generateUuid } from 'vs/base/common/uuid';
import { ExtHostNotebookDocuments } from 'vs/workbench/api/common/extHostNotebookDocuments';
export class ExtHostNotebookConcatDocument implements vscode.NotebookConcatTextDocument {
private _disposables = new DisposableStore();
private _isClosed = false;
private _cells!: vscode.NotebookCell[];
private _cellUris!: ResourceMap<number>;
private _cellLengths!: PrefixSumComputer;
private _cellLines!: PrefixSumComputer;
private _versionId = 0;
private readonly _onDidChange = new Emitter<void>();
readonly onDidChange: Event<void> = this._onDidChange.event;
readonly uri = URI.from({ scheme: 'vscode-concat-doc', path: generateUuid() });
constructor(
extHostNotebooks: ExtHostNotebookDocuments,
extHostDocuments: ExtHostDocuments,
private readonly _notebook: vscode.NotebookDocument,
private readonly _selector: vscode.DocumentSelector | undefined,
) {
this._init();
this._disposables.add(extHostDocuments.onDidChangeDocument(e => {
const cellIdx = this._cellUris.get(e.document.uri);
if (cellIdx !== undefined) {
this._cellLengths.setValue(cellIdx, this._cells[cellIdx].document.getText().length + 1);
this._cellLines.setValue(cellIdx, this._cells[cellIdx].document.lineCount);
this._versionId += 1;
this._onDidChange.fire(undefined);
}
}));
const documentChange = (document: vscode.NotebookDocument) => {
if (document === this._notebook) {
this._init();
this._versionId += 1;
this._onDidChange.fire(undefined);
}
};
this._disposables.add(extHostNotebooks.onDidChangeNotebookDocument(e => documentChange(e.notebook)));
}
dispose(): void {
this._disposables.dispose();
this._isClosed = true;
}
get isClosed() {
return this._isClosed;
}
private _init() {
this._cells = [];
this._cellUris = new ResourceMap();
const cellLengths: number[] = [];
const cellLineCounts: number[] = [];
for (const cell of this._notebook.getCells()) {
if (cell.kind === types.NotebookCellKind.Code && (!this._selector || score(this._selector, cell.document.uri, cell.document.languageId, true, undefined))) {
this._cellUris.set(cell.document.uri, this._cells.length);
this._cells.push(cell);
cellLengths.push(cell.document.getText().length + 1);
cellLineCounts.push(cell.document.lineCount);
}
}
this._cellLengths = new PrefixSumComputer(new Uint32Array(cellLengths));
this._cellLines = new PrefixSumComputer(new Uint32Array(cellLineCounts));
}
get version(): number {
return this._versionId;
}
getText(range?: vscode.Range): string {
if (!range) {
let result = '';
for (const cell of this._cells) {
result += cell.document.getText() + '\n';
}
// remove last newline again
result = result.slice(0, -1);
return result;
}
if (range.isEmpty) {
return '';
}
// get start and end locations and create substrings
const start = this.locationAt(range.start);
const end = this.locationAt(range.end);
const startIdx = this._cellUris.get(start.uri);
const endIdx = this._cellUris.get(end.uri);
if (startIdx === undefined || endIdx === undefined) {
return '';
}
if (startIdx === endIdx) {
return this._cells[startIdx].document.getText(new types.Range(start.range.start, end.range.end));
}
const parts = [this._cells[startIdx].document.getText(new types.Range(start.range.start, new types.Position(this._cells[startIdx].document.lineCount, 0)))];
for (let i = startIdx + 1; i < endIdx; i++) {
parts.push(this._cells[i].document.getText());
}
parts.push(this._cells[endIdx].document.getText(new types.Range(new types.Position(0, 0), end.range.end)));
return parts.join('\n');
}
offsetAt(position: vscode.Position): number {
const idx = this._cellLines.getIndexOf(position.line);
const offset1 = this._cellLengths.getPrefixSum(idx.index - 1);
const offset2 = this._cells[idx.index].document.offsetAt(position.with(idx.remainder));
return offset1 + offset2;
}
positionAt(locationOrOffset: vscode.Location | number): vscode.Position {
if (typeof locationOrOffset === 'number') {
const idx = this._cellLengths.getIndexOf(locationOrOffset);
const lineCount = this._cellLines.getPrefixSum(idx.index - 1);
return this._cells[idx.index].document.positionAt(idx.remainder).translate(lineCount);
}
const idx = this._cellUris.get(locationOrOffset.uri);
if (idx !== undefined) {
const line = this._cellLines.getPrefixSum(idx - 1);
return new types.Position(line + locationOrOffset.range.start.line, locationOrOffset.range.start.character);
}
// do better?
// return undefined;
return new types.Position(0, 0);
}
locationAt(positionOrRange: vscode.Range | vscode.Position): types.Location {
if (!types.Range.isRange(positionOrRange)) {
positionOrRange = new types.Range(<types.Position>positionOrRange, <types.Position>positionOrRange);
}
const startIdx = this._cellLines.getIndexOf(positionOrRange.start.line);
let endIdx = startIdx;
if (!positionOrRange.isEmpty) {
endIdx = this._cellLines.getIndexOf(positionOrRange.end.line);
}
const startPos = new types.Position(startIdx.remainder, positionOrRange.start.character);
const endPos = new types.Position(endIdx.remainder, positionOrRange.end.character);
const range = new types.Range(startPos, endPos);
const startCell = this._cells[startIdx.index];
return new types.Location(startCell.document.uri, <types.Range>startCell.document.validateRange(range));
}
contains(uri: vscode.Uri): boolean {
return this._cellUris.has(uri);
}
validateRange(range: vscode.Range): vscode.Range {
const start = this.validatePosition(range.start);
const end = this.validatePosition(range.end);
return range.with(start, end);
}
validatePosition(position: vscode.Position): vscode.Position {
const startIdx = this._cellLines.getIndexOf(position.line);
const cellPosition = new types.Position(startIdx.remainder, position.character);
const validCellPosition = this._cells[startIdx.index].document.validatePosition(cellPosition);
const line = this._cellLines.getPrefixSum(startIdx.index - 1);
return new types.Position(line + validCellPosition.line, validCellPosition.character);
}
}
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