@Nullable
public static PsiElement resolveMixin(@NotNull PsiElement base, @NotNull String name) {
CssResolveProcessor processor = CssPluginsFacade.getMixinProcessor(base, name);
if (processor.executeInScope(base)) {
processFile(
base.getContainingFile(),
processor,
ResolveState.initial().put(PROCESSED_PATHS, new HashSet<String>()));
}
return processor.getResult();
}
private static boolean processFile(
final PsiFile file, final CssResolveProcessor processor, final ResolveState state) {
if (!pushPath(file, state)) {
// Already visited, skip
return true;
}
// Process declarations in file
if (!PsiTreeUtil.processElements(file, processor)) {
return false;
}
// Process imports in file
CssImport cssImport;
while ((cssImport = processor.popImport()) != null) {
PsiElement resolvedImport = cssImport.resolve();
if (resolvedImport instanceof PsiFile) {
if (!processFile((PsiFile) resolvedImport, processor, state)) {
return false;
}
}
}
// Recurse on files importing this file
CssUtils.getPsiSearchHelper(file.getProject())
.processElementsWithWord(
new TextOccurenceProcessor() {
public boolean execute(PsiElement element, int offsetInElement) {
if (element.getParent().getParent() instanceof CssImport) {
CssImport cssImport = (CssImport) element.getParent().getParent();
String uri = cssImport.getUriString();
if (uri.endsWith(file.getName())) {
PsiElement importedFile = cssImport.resolve();
if (file == importedFile) {
if (!processFile(cssImport.getContainingFile(), processor, state)) {
return false;
}
}
}
}
return true;
}
},
getResolveSearchScope(file),
file.getName(),
(short) (UsageSearchContext.IN_CODE | UsageSearchContext.IN_STRINGS),
true);
return true;
}
