Use the fast variant of TextEditor.setDecorations

extensions/merge-conflict/src/mergeDecorator.ts

@@ -188,9 +188,9 @@ export default class MergeDecorator implements vscode.Disposable {
 
 			// Store decorations keyed by the type of decoration, set decoration wants a "style"
 			// to go with it, which will match this key (see constructor);
-			let matchDecorations: { [key: string]: vscode.DecorationOptions[] } = {};
+			let matchDecorations: { [key: string]: vscode.Range[] } = {};
 
-			let pushDecoration = (key: string, d: vscode.DecorationOptions) => {
+			let pushDecoration = (key: string, d: vscode.Range) => {
 				matchDecorations[key] = matchDecorations[key] || [];
 				matchDecorations[key].push(d);
 			};
@@ -198,25 +198,25 @@ export default class MergeDecorator implements vscode.Disposable {
 			conflicts.forEach(conflict => {
 				// TODO, this could be more effective, just call getMatchPositions once with a map of decoration to position
 				if (!conflict.current.decoratorContent.isEmpty) {
-					pushDecoration('current.content', { range: conflict.current.decoratorContent });
+					pushDecoration('current.content', conflict.current.decoratorContent);
 				}
 				if (!conflict.incoming.decoratorContent.isEmpty) {
-					pushDecoration('incoming.content', { range: conflict.incoming.decoratorContent });
+					pushDecoration('incoming.content', conflict.incoming.decoratorContent);
 				}
 
 				conflict.commonAncestors.forEach(commonAncestorsRegion => {
 					if (!commonAncestorsRegion.decoratorContent.isEmpty) {
-						pushDecoration('commonAncestors.content', { range: commonAncestorsRegion.decoratorContent });
+						pushDecoration('commonAncestors.content', commonAncestorsRegion.decoratorContent);
 					}
 				});
 
 				if (this.config!.enableDecorations) {
-					pushDecoration('current.header', { range: conflict.current.header });
-					pushDecoration('splitter', { range: conflict.splitter });
-					pushDecoration('incoming.header', { range: conflict.incoming.header });
+					pushDecoration('current.header', conflict.current.header);
+					pushDecoration('splitter', conflict.splitter);
+					pushDecoration('incoming.header', conflict.incoming.header);
 
 					conflict.commonAncestors.forEach(commonAncestorsRegion => {
-						pushDecoration('commonAncestors.header', { range: commonAncestorsRegion.header });
+						pushDecoration('commonAncestors.header', commonAncestorsRegion.header);
 					});
 				}
 			});