@Override
public Object getIndex(Object key, Location loc) throws EvalException {
if (!(key instanceof SkylarkClassObjectConstructor)) {
throw new EvalException(
loc,
String.format(
"Type Target only supports indexing by object constructors, got %s instead",
EvalUtils.getDataTypeName(key)));
}
SkylarkClassObjectConstructor constructor = (SkylarkClassObjectConstructor) key;
SkylarkProviders provider = getProvider(SkylarkProviders.class);
if (provider != null) {
Object declaredProvider = provider.getDeclaredProvider(constructor.getKey());
if (declaredProvider != null) {
return declaredProvider;
}
}
// Either provider or declaredProvider is null
throw new EvalException(
loc,
String.format(
"Object of type Target doesn't contain declared provider %s",
constructor.getKey().getExportedName()));
}
@Override
public boolean containsKey(Object key, Location loc) throws EvalException {
if (!(key instanceof SkylarkClassObjectConstructor)) {
throw new EvalException(
loc,
String.format(
"Type Target only supports querying by object constructors, got %s instead",
EvalUtils.getDataTypeName(key)));
}
SkylarkClassObjectConstructor constructor = (SkylarkClassObjectConstructor) key;
SkylarkProviders provider = getProvider(SkylarkProviders.class);
if (provider != null) {
Object declaredProvider = provider.getDeclaredProvider(constructor.getKey());
if (declaredProvider != null) {
return true;
}
}
return false;
}