TypeScript LanguageConfigurationRegistry.getComments方法代碼示例

	/**
	 * Do an initial pass over the lines and gather info about the line comment string.
	 * Returns null if any of the lines doesn't support a line comment string.
	 */
	public static _gatherPreflightCommentStrings(model: editorCommon.ITokenizedModel, startLineNumber: number, endLineNumber: number): ILinePreflightData[] {
		let commentStrForLanguage: string[] = [];
		let lines: ILinePreflightData[] = [];
		for (let i = 0, lineCount = endLineNumber - startLineNumber + 1; i < lineCount; i++) {
			let lineNumber = startLineNumber + i;
			let languageId = model.getLanguageIdAtPosition(lineNumber, 1);

			// Find the commentStr for this line, if none is found then bail out: we cannot do line comments
			let commentStr: string;
			if (commentStrForLanguage[languageId]) {
				commentStr = commentStrForLanguage[languageId];
			} else {
				let config = LanguageConfigurationRegistry.getComments(languageId);
				commentStr = (config ? config.lineCommentToken : null);
				if (!commentStr) {
					// Mode does not support line comments
					return null;
				}

				commentStrForLanguage[languageId] = commentStr;
			}

			lines.push({
				ignore: false,
				commentStr: commentStr,
				commentStrOffset: 0,
				commentStrLength: commentStr.length
			});
		}

		return lines;
	}

	public getEditOperations(model: ITextModel, builder: editorCommon.IEditOperationBuilder): void {
		const startLineNumber = this._selection.startLineNumber;
		const startColumn = this._selection.startColumn;

		model.tokenizeIfCheap(startLineNumber);
		const languageId = model.getLanguageIdAtPosition(startLineNumber, startColumn);
		const config = LanguageConfigurationRegistry.getComments(languageId);
		if (!config || !config.blockCommentStartToken || !config.blockCommentEndToken) {
			// Mode does not support block comments
			return;
		}

		this._createOperationsForBlockComment(this._selection, config.blockCommentStartToken, config.blockCommentEndToken, model, builder);
	}

	/**
	 * Given an unsuccessful analysis, delegate to the block comment command
	 */
	private _executeBlockComment(model: editorCommon.ITokenizedModel, builder: editorCommon.IEditOperationBuilder, s: Selection): void {
		model.forceTokenization(s.startLineNumber);
		let languageId = model.getLanguageIdAtPosition(s.startLineNumber, s.startColumn);
		let config = LanguageConfigurationRegistry.getComments(languageId);
		if (!config || !config.blockCommentStartToken || !config.blockCommentEndToken) {
			// Mode does not support block comments
			return;
		}

		var startToken = config.blockCommentStartToken;
		var endToken = config.blockCommentEndToken;

		var ops = this._attemptRemoveBlockComment(model, s, startToken, endToken);
		if (!ops) {
			if (s.isEmpty()) {
				var lineContent = model.getLineContent(s.startLineNumber);
				var firstNonWhitespaceIndex = strings.firstNonWhitespaceIndex(lineContent);
				if (firstNonWhitespaceIndex === -1) {
					// Line is empty or contains only whitespace
					firstNonWhitespaceIndex = lineContent.length;
				}
				ops = BlockCommentCommand._createAddBlockCommentOperations({
					startLineNumber: s.startLineNumber,
					startColumn: firstNonWhitespaceIndex + 1,
					endLineNumber: s.startLineNumber,
					endColumn: lineContent.length + 1
				}, startToken, endToken);
			} else {
				ops = BlockCommentCommand._createAddBlockCommentOperations({
					startLineNumber: s.startLineNumber,
					startColumn: model.getLineFirstNonWhitespaceColumn(s.startLineNumber),
					endLineNumber: s.endLineNumber,
					endColumn: model.getLineMaxColumn(s.endLineNumber)
				}, startToken, endToken);
			}

			if (ops.length === 1) {
				this._deltaColumn = startToken.length;
			}
		}
		this._selectionId = builder.trackSelection(s);
		for (var i = 0; i < ops.length; i++) {
			builder.addEditOperation(ops[i].range, ops[i].text);
		}
	}

	public getEditOperations(model: editorCommon.ITokenizedModel, builder: editorCommon.IEditOperationBuilder): void {
		var startLineNumber = this._selection.startLineNumber;
		var startColumn = this._selection.startColumn;
		var endLineNumber = this._selection.endLineNumber;
		var endColumn = this._selection.endColumn;

		model.forceTokenization(startLineNumber);
		let languageId = model.getLanguageIdAtPosition(startLineNumber, startColumn);
		let config = LanguageConfigurationRegistry.getComments(languageId);
		if (!config || !config.blockCommentStartToken || !config.blockCommentEndToken) {
			// Mode does not support block comments
			return;
		}

		this._createOperationsForBlockComment(
			new Range(startLineNumber, startColumn, endLineNumber, endColumn), config, model, builder
		);
	}

	/**
	 * Given an unsuccessful analysis, delegate to the block comment command
	 */
	private _executeBlockComment(model: ITextModel, builder: editorCommon.IEditOperationBuilder, s: Selection): void {
		model.tokenizeIfCheap(s.startLineNumber);
		let languageId = model.getLanguageIdAtPosition(s.startLineNumber, 1);
		let config = LanguageConfigurationRegistry.getComments(languageId);
		if (!config || !config.blockCommentStartToken || !config.blockCommentEndToken) {
			// Mode does not support block comments
			return;
		}

		const startToken = config.blockCommentStartToken;
		const endToken = config.blockCommentEndToken;

		let ops = this._attemptRemoveBlockComment(model, s, startToken, endToken);
		if (!ops) {
			if (s.isEmpty()) {
				const lineContent = model.getLineContent(s.startLineNumber);
				let firstNonWhitespaceIndex = strings.firstNonWhitespaceIndex(lineContent);
				if (firstNonWhitespaceIndex === -1) {
					// Line is empty or contains only whitespace
					firstNonWhitespaceIndex = lineContent.length;
				}
				ops = BlockCommentCommand._createAddBlockCommentOperations(
					new Range(s.startLineNumber, firstNonWhitespaceIndex + 1, s.startLineNumber, lineContent.length + 1), startToken, endToken
				);
			} else {
				ops = BlockCommentCommand._createAddBlockCommentOperations(
					new Range(s.startLineNumber, model.getLineFirstNonWhitespaceColumn(s.startLineNumber), s.endLineNumber, model.getLineMaxColumn(s.endLineNumber)), startToken, endToken
				);
			}

			if (ops.length === 1) {
				// Leave cursor after token and Space
				this._deltaColumn = startToken.length + 1;
			}
		}
		this._selectionId = builder.trackSelection(s);
		for (let i = 0; i < ops.length; i++) {
			builder.addEditOperation(ops[i].range, ops[i].text);
		}
	}

	/**
	 * Do an initial pass over the lines and gather info about the line comment string.
	 * Returns null if any of the lines doesn't support a line comment string.
	 */
	public static _gatherPreflightCommentStrings(model:editorCommon.ITokenizedModel, startLineNumber: number, endLineNumber: number): ILinePreflightData[] {
		var lines: ILinePreflightData[] = [],
			config:ICommentsConfiguration,
			commentStr:string,
			seenModes: {[modeId:string]:string;} = Object.create(null),
			i:number,
			lineCount:number,
			lineNumber:number,
			mode: IMode,
			modeId: string;

		for (i = 0, lineCount = endLineNumber - startLineNumber + 1; i < lineCount; i++) {
			lineNumber = startLineNumber + i;
			mode = model.getModeAtPosition(lineNumber, 1);
			modeId = mode.getId();

			// Find the commentStr for this line, if none is found then bail out: we cannot do line comments
			if (seenModes[modeId]) {
				commentStr = seenModes[modeId];
			} else {
				config = LanguageConfigurationRegistry.getComments(mode);
				commentStr = (config ? config.lineCommentToken : null);
				if (!commentStr) {
					// Mode does not support line comments
					return null;
				}

				seenModes[modeId] = commentStr;
			}

			lines.push({
				ignore: false,
				commentStr: commentStr,
				commentStrOffset: 0,
				commentStrLength: commentStr.length
			});
		}

		return lines;
	}

	/**
	 * Do an initial pass over the lines and gather info about the line comment string.
	 * Returns null if any of the lines doesn't support a line comment string.
	 */
	public static _gatherPreflightCommentStrings(model: editorCommon.ITokenizedModel, startLineNumber: number, endLineNumber: number): ILinePreflightData[] {

		model.forceTokenization(startLineNumber);
		const languageId = model.getLanguageIdAtPosition(startLineNumber, 1);

		const config = LanguageConfigurationRegistry.getComments(languageId);
		const commentStr = (config ? config.lineCommentToken : null);
		if (!commentStr) {
			// Mode does not support line comments
			return null;
		}

		let lines: ILinePreflightData[] = [];
		for (let i = 0, lineCount = endLineNumber - startLineNumber + 1; i < lineCount; i++) {
			lines[i] = {
				ignore: false,
				commentStr: commentStr,
				commentStrOffset: 0,
				commentStrLength: commentStr.length
			};
		}

		return lines;
	}