private ResourceValue resolveResValue(ResourceValue resValue, int depth) {
if (resValue == null) {
return null;
}
// if the resource value is null, we simply return it.
String value = resValue.getValue();
if (value == null) {
return resValue;
}
// else attempt to find another ResourceValue referenced by this one.
ResourceValue resolvedResValue = findResValue(value, resValue.isFramework());
// if the value did not reference anything, then we simply return the input value
if (resolvedResValue == null) {
return resValue;
}
// detect potential loop due to mishandled namespace in attributes
if (resValue == resolvedResValue || depth >= MAX_RESOURCE_INDIRECTION) {
if (mLogger != null) {
mLogger.error(
LayoutLog.TAG_BROKEN,
String.format(
"Potential stack overflow trying to resolve '%s': cyclic resource definitions? Render may not be accurate.",
value),
null);
}
return resValue;
}
// otherwise, we attempt to resolve this new value as well
return resolveResValue(resolvedResValue, depth + 1);
}
@Override
public ResourceValue findResValue(String reference, boolean forceFrameworkOnly) {
if (!mLookupChain.isEmpty() && reference.startsWith(PREFIX_RESOURCE_REF)) {
ResourceValue prev = mLookupChain.get(mLookupChain.size() - 1);
if (!reference.equals(prev.getValue())) {
ResourceValue next =
new ResourceValue(prev.getResourceType(), prev.getName(), prev.isFramework());
next.setValue(reference);
mLookupChain.add(next);
}
}
ResourceValue resValue = super.findResValue(reference, forceFrameworkOnly);
if (resValue != null) {
mLookupChain.add(resValue);
}
return resValue;
}