Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/extensions/emmet/src/mergeLines.ts

@@ -0,0 +1,54 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+import { Node } from 'EmmetNode';
+import { getNode, parseDocument, validate } from './util';
+
+export function mergeLines() {
+	if (!validate(false) || !vscode.window.activeTextEditor) {
+		return;
+	}
+
+	const editor = vscode.window.activeTextEditor;
+
+	let rootNode = parseDocument(editor.document);
+	if (!rootNode) {
+		return;
+	}
+
+	return editor.edit(editBuilder => {
+		editor.selections.reverse().forEach(selection => {
+			let textEdit = getRangesToReplace(editor.document, selection, rootNode!);
+			if (textEdit) {
+				editBuilder.replace(textEdit.range, textEdit.newText);
+			}
+		});
+	});
+}
+
+function getRangesToReplace(document: vscode.TextDocument, selection: vscode.Selection, rootNode: Node): vscode.TextEdit | undefined {
+	let startNodeToUpdate: Node | null;
+	let endNodeToUpdate: Node | null;
+
+	if (selection.isEmpty) {
+		startNodeToUpdate = endNodeToUpdate = getNode(rootNode, selection.start, true);
+	} else {
+		startNodeToUpdate = getNode(rootNode, selection.start, true);
+		endNodeToUpdate = getNode(rootNode, selection.end, true);
+	}
+
+	if (!startNodeToUpdate || !endNodeToUpdate || startNodeToUpdate.start.line === endNodeToUpdate.end.line) {
+		return;
+	}
+
+	let rangeToReplace = new vscode.Range(startNodeToUpdate.start, endNodeToUpdate.end);
+	let textToReplaceWith = document.lineAt(startNodeToUpdate.start.line).text.substr(startNodeToUpdate.start.character);
+	for (let i = startNodeToUpdate.start.line + 1; i <= endNodeToUpdate.end.line; i++) {
+		textToReplaceWith += document.lineAt(i).text.trim();
+	}
+
+	return new vscode.TextEdit(rangeToReplace, textToReplaceWith);
+}