@NotNull
private static XmlFileHeader calcXmlFileHeader(final XmlFile file) {
if (file instanceof PsiFileEx
&& ((PsiFileEx) file).isContentsLoaded()
&& file.getNode().isParsed()) {
return computeHeaderByPsi(file);
}
if (!XmlUtil.isStubBuilding() && file.getFileType() == XmlFileType.INSTANCE) {
VirtualFile virtualFile = file.getVirtualFile();
if (virtualFile instanceof VirtualFileWithId) {
ObjectStubTree tree =
StubTreeLoader.getInstance().readFromVFile(file.getProject(), virtualFile);
if (tree != null) {
Stub root = tree.getRoot();
if (root instanceof FileStub) {
return ((FileStub) root).getHeader();
}
}
}
}
if (!file.isValid()) return XmlFileHeader.EMPTY;
return NanoXmlUtil.parseHeader(file);
}
@Nullable
public DomExtensionsRegistrarImpl extend(
@NotNull final Project project,
@NotNull final DomInvocationHandler handler,
@Nullable DomExtensionsRegistrarImpl registrar) {
if (myExtender == null) {
try {
myDomClass = findClass(domClassName);
myExtender = instantiate(extenderClassName, project.getPicoContainer());
} catch (Exception e) {
LOG.error(e);
return null;
}
}
if (myDomClass.isAssignableFrom(handler.getRawType())) {
if (!myExtender.supportsStubs() && XmlUtil.isStubBuilding()) return registrar;
if (registrar == null) {
registrar = new DomExtensionsRegistrarImpl();
}
//noinspection unchecked
myExtender.registerExtensions(handler.getProxy(), registrar);
}
return registrar;
}