public static ICachedBlob <A> a <A>(
ISerializedRW <A> rw, PathStr path, A defaultValue,
ILog log = null, Log.Level onDeserializeFailureLogLevel = Log.Level.ERROR
)
{
log = log ?? Log.d;
return(new FileCachedBlob(path).bimap(BiMapper.a(
(byte[] bytes) => {
var deserializedOpt = rw.deserialize(bytes, 0);
if (deserializedOpt.isNone)
{
if (log.willLog(onDeserializeFailureLogLevel))
{
log.log(
onDeserializeFailureLogLevel,
$"Can't deserialize {path}, deleting and returning default value."
);
}
clear(path).getOrLog($"Couldn't clear file: '{path}'", log: log);
return defaultValue;
}
return deserializedOpt.__unsafeGetValue.value;
},
a => rw.serialize(a).toArray()
)));
}
public static PrefVal <B> bimap <A, B>(
this PrefVal <A> val, BiMapper <A, B> bimap
) => new PrefValMapper <A, B>(val, bimap);
public PrefValMapper(PrefVal <A> backing, BiMapper <A, B> bimap)
{
this.backing = backing;
this.bimap = bimap;
}
public static ICache <B> bimap <A, B>(this ICache <A> cache, BiMapper <A, B> bimap) => new ICacheMapper <A, B>(cache, bimap);
public ICacheMapper(ICache <A> backing, BiMapper <A, B> bimap)
{
this.backing = backing;
this.bimap = bimap;
}
public static ICachedBlob <string> toStringBlob(
this ICachedBlob <byte[]> blob, Encoding encoding = null
) => blob.bimap(BiMapper.byteArrString(encoding));
public static ICachedBlob <B> bimap <A, B>(
this ICachedBlob <A> blob, BiMapper <A, B> bimap
) => new ICachedBlobMapper <A, B>(blob, bimap);
public ICachedBlobTestBiMap()
{
blob = new ICachedBlobTestImpl <int>();
mappedBlob = blob.bimap(BiMapper.a <int, string>(i => i.ToString(), int.Parse));
}