package tezos-protocol-007-PsDELPH1

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Restricted version of Indexed_data_storage w/o iterators.

type t
type context = t
type key

An abstract type for keys

type value

The type of values

Tells if a given key is already bound to a storage bucket

Retrieve a value from the storage bucket at a given key ; returns Storage_errorMissing_key if the key is not set ; returns Storage_errorCorrupted_data if the deserialisation fails.

Retrieve a value from the storage bucket at a given key ; returns None if the value is not set ; returns Storage_error Corrupted_data if the deserialisation fails.

Updates the content of a bucket ; returns A Storage_Error Missing_key if the value does not exists.

Allocates a storage bucket at the given key and initializes it ; returns a Storage_errorExisting_key if the bucket exists.

Allocates a storage bucket at the given key and initializes it with a value ; just updates it if the bucket exists.

When the value is Some v, allocates the data and initializes it with v ; just updates it if the bucket exists. When the value is None, delete the storage bucket when the value ; does nothing if the bucket does not exists.

Delete a storage bucket and its contents ; returns a Storage_errorMissing_key if the bucket does not exists.

Removes a storage bucket and its contents ; does nothing if the bucket does not exists.

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