Add Linearization

src/utils/RangeUtils.ts

@@ -0,0 +1,12 @@
+'use strict';
+
+import { TextDocument, Range, Position } from 'vscode';
+
+export function getRangeForDocument(document: TextDocument): Range {
+	let lastLineIndex = (document.lineCount - 1);
+	let range = new Range(new Position(0, 0), new Position(lastLineIndex, Number.MAX_VALUE));
+
+	range = document.validateRange(range);
+	
+	return range;
+}