Generate scopes only once when matching against token types

release/main.d.ts

@@ -84,7 +84,6 @@ export declare class Registry {
     loadGrammar(initialScopeName: string): Promise<IGrammar | null>;
     private _doLoadSingleGrammar;
     private _loadSingleGrammar;
-    private _collectDependenciesForDep;
     private _loadGrammar;
     /**
      * Adds a rawGrammar.

src/grammar.ts

@@ -1636,9 +1636,12 @@ class LineTokens {
 		if (this._emitBinaryTokens) {
 			let metadata = scopesList.metadata;
 
-			for (const tokenType of this._tokenTypeOverrides) {
-				if (tokenType.matcher(scopesList.generateScopes())) {
-					metadata = StackElementMetadata.set(metadata, 0, toTemporaryType(tokenType.type), FontStyle.NotSet, 0, 0);
+			if (this._tokenTypeOverrides.length > 0) {
+				const scopes = scopesList.generateScopes();
+				for (const tokenType of this._tokenTypeOverrides) {
+					if (tokenType.matcher(scopes)) {
+						metadata = StackElementMetadata.set(metadata, 0, toTemporaryType(tokenType.type), FontStyle.NotSet, 0, 0);
+					}
 				}
 			}