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;
}
@NotNull
@Override
public EditorHighlighter createEditorHighlighter(
@NotNull VirtualFile vFile, @NotNull EditorColorsScheme settings, @Nullable Project project) {
FileType fileType = vFile.getFileType();
if (fileType instanceof LanguageFileType) {
LanguageFileType substFileType =
substituteFileType(((LanguageFileType) fileType).getLanguage(), vFile, project);
if (substFileType != null) {
EditorHighlighterProvider provider =
FileTypeEditorHighlighterProviders.INSTANCE.forFileType(substFileType);
EditorHighlighter editorHighlighter =
provider.getEditorHighlighter(project, fileType, vFile, settings);
boolean isPlain =
editorHighlighter.getClass() == LexerEditorHighlighter.class
&& ((LexerEditorHighlighter) editorHighlighter).isPlain();
if (!isPlain) {
return editorHighlighter;
}
}
try {
return FileTypeEditorHighlighterProviders.INSTANCE
.forFileType(fileType)
.getEditorHighlighter(project, fileType, vFile, settings);
} catch (ProcessCanceledException e) {
throw e;
} catch (Exception e) {
LOG.error(e);
}
}
SyntaxHighlighter highlighter = null;
for (ContentBasedFileSubstitutor processor :
Extensions.getExtensions(ContentBasedFileSubstitutor.EP_NAME)) {
boolean applicable;
try {
applicable = processor.isApplicable(project, vFile);
} catch (Exception e) {
LOG.error(e);
continue;
}
if (applicable && processor instanceof ContentBasedClassFileProcessor) {
highlighter =
((ContentBasedClassFileProcessor) processor).createHighlighter(project, vFile);
}
}
if (highlighter == null) {
highlighter = SyntaxHighlighterFactory.getSyntaxHighlighter(fileType, project, vFile);
}
return createEditorHighlighter(highlighter, settings);
}