/**
* Returns the {@link LuaObjectMeta} registered with the provided typename.
*
* @param metaName the typename to match
* @return the LuaObjectMeta matching the given typename, or null if doesn't exist
*/
public static LuaObjectMeta getMeta(String metaName) {
for (LuaObjectMeta meta : Lua.PMETA.values()) {
if (meta.getTypeName().equals(metaName)) {
return meta;
}
}
for (LuaObjectMeta meta : Lua.META.values()) {
if (meta.getTypeName().equals(metaName)) {
return meta;
}
}
return null;
}
/**
* Returns the given {@link LuaValue} as the appropriate type of {@link LuaObjectValue}, directed
* by the provided {@link LuaObjectMeta} type.
*
* <p>If the provided value is not of the appropriate type, a {@link LuaError} is raised.
*
* @param value the LuaValue to check
* @param clazz the target LuaObjectMeta type to check with
* @return the appropriately typed LuaValue as a LuaObjectValue
*/
public static <T> LuaObjectValue<T> checkType(
LuaValue value, Class<? extends LuaObjectMeta> clazz) {
LuaObjectMeta meta = Lua.getMeta(clazz);
if (meta == null) {
throw new IllegalArgumentException(
"Meta class " + clazz.getSimpleName() + " isn't registered");
}
if (value instanceof LuaObjectValue) {
LuaObjectValue<?> objectValue = ((LuaObjectValue<?>) value);
if (meta.getTargetObjectClass().isInstance(objectValue.getObject())) {
return (LuaObjectValue<T>) objectValue;
}
}
throw new LuaError(String.format(INVALID_TYPE_MSG, meta.getTypeName(), value.typename()));
}
