Mark SemanticTokenTypes and SemanticTokenModifiers as open set (#1010)

Author: dbaeumer

protocol/metaModel.json

@@ -12597,6 +12597,7 @@
 					"since": "3.17.0"
 				}
 			],
+			"supportsCustomValues": true,
 			"documentation": "A set of predefined token types. This set is not fixed\nan clients can specify additional token types via the\ncorresponding client capabilities.\n\n@since 3.16.0",
 			"since": "3.16.0"
 		},
@@ -12648,6 +12649,7 @@
 					"value": "defaultLibrary"
 				}
 			],
+			"supportsCustomValues": true,
 			"documentation": "A set of predefined token modifiers. This set is not fixed\nan clients can specify additional token types via the\ncorresponding client capabilities.\n\n@since 3.16.0",
 			"since": "3.16.0"
 		},

tools/src/visitor.ts

@@ -941,6 +941,9 @@ export default class Visitor {
 				? { kind: 'base', name: 'uinteger' }
 				: { kind: 'base', name: enumBaseType };
 			const result: Enumeration = { name: name, type: type, values: entries };
+			if (name === 'SemanticTokenTypes' || name === 'SemanticTokenModifiers') {
+				result.supportsCustomValues = true;
+			}
 			const declaration = this.getDeclaration(symbol, ts.SyntaxKind.EnumDeclaration);
 			if (declaration !== undefined) {
 				this.fillDocProperties(declaration, result);