public static boolean canHaveStub(@NotNull VirtualFile file) {
final FileType fileType = file.getFileType();
if (fileType instanceof LanguageFileType) {
Language l = ((LanguageFileType) fileType).getLanguage();
ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(l);
if (parserDefinition == null) return false;
final IFileElementType elementType = parserDefinition.getFileNodeType();
return elementType instanceof IStubFileElementType
&& (((IStubFileElementType) elementType).shouldBuildStubFor(file)
|| IndexingStamp.isFileIndexed(
file, INDEX_ID, IndexInfrastructure.getIndexCreationStamp(INDEX_ID)));
}
if (fileType.isBinary()) {
final BinaryFileStubBuilder builder = BinaryFileStubBuilders.INSTANCE.forFileType(fileType);
return builder != null && builder.acceptsFile(file);
}
return false;
}
private static int getCumulativeVersion() {
int version = VERSION;
for (final FileType fileType : FileTypeManager.getInstance().getRegisteredFileTypes()) {
if (fileType instanceof LanguageFileType) {
Language l = ((LanguageFileType) fileType).getLanguage();
ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(l);
if (parserDefinition != null) {
final IFileElementType type = parserDefinition.getFileNodeType();
if (type instanceof IStubFileElementType) {
version += ((IStubFileElementType) type).getStubVersion();
}
}
} else if (fileType.isBinary()) {
final BinaryFileStubBuilder builder = BinaryFileStubBuilders.INSTANCE.forFileType(fileType);
if (builder != null) {
version += builder.getStubVersion();
}
}
}
return version;
}