private static Language calcBaseLanguage(@NotNull VirtualFile file, @NotNull Project project) {
if (file instanceof LightVirtualFile) {
final Language language = ((LightVirtualFile) file).getLanguage();
if (language != null) {
return language;
}
}
FileType fileType = file.getFileType();
// Do not load content
if (fileType == UnknownFileType.INSTANCE) {
fileType = FileTypeRegistry.getInstance().detectFileTypeFromContent(file);
}
if (fileType.isBinary()) return Language.ANY;
if (isTooLarge(file)) return PlainTextLanguage.INSTANCE;
if (fileType instanceof LanguageFileType) {
return LanguageSubstitutors.INSTANCE.substituteLanguage(
((LanguageFileType) fileType).getLanguage(), file, project);
}
final ContentBasedFileSubstitutor[] processors =
Extensions.getExtensions(ContentBasedFileSubstitutor.EP_NAME);
for (ContentBasedFileSubstitutor processor : processors) {
Language language = processor.obtainLanguageForFile(file);
if (language != null) return language;
}
return PlainTextLanguage.INSTANCE;
}
@Nullable
protected PsiFile createFile(
@NotNull Project project, @NotNull VirtualFile file, @NotNull FileType fileType) {
if (fileType.isBinary() || file.isSpecialFile()) {
return new PsiBinaryFileImpl((PsiManagerImpl) getManager(), this);
}
if (!isTooLarge(file)) {
final PsiFile psiFile = createFile(getBaseLanguage());
if (psiFile != null) return psiFile;
}
return new PsiPlainTextFileImpl(this);
}
private PsiFile createFile() {
try {
final VirtualFile vFile = getVirtualFile();
if (vFile.isDirectory()) return null;
if (isIgnored()) return null;
final Project project = myManager.getProject();
if (isPhysical()) { // check directories consistency
final VirtualFile parent = vFile.getParent();
if (parent == null) return null;
final PsiDirectory psiDir = getManager().findDirectory(parent);
if (psiDir == null) return null;
}
FileType fileType = vFile.getFileType();
PsiFile file = null;
if (fileType.isBinary() || vFile.isSpecialFile()) {
// TODO check why ClsFileImpl doesn't created automatically with create method
file = new ClsFileImpl((PsiManagerImpl) getManager(), this);
// file = new PsiBinaryFileImpl((PsiManagerImpl) getManager(), this);
} else {
if (!isTooLarge(vFile)) {
final PsiFile psiFile = createFile(getBaseLanguage());
if (psiFile != null) file = psiFile;
} else {
file = new PsiPlainTextFileImpl(this);
}
}
return file;
} catch (ProcessCanceledException e) {
e.printStackTrace();
throw e;
} catch (Throwable e) {
e.printStackTrace();
LOG.error(e);
return null;
}
}
