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Introduce prefixed storage with enumeration (#4185)

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* Introduce storage_next allowing iteration.  (without childtries)

* Implement prefixed storage

* impl cache in client_storage_cache (needs test)

* switch overlay change to btreemap

* Revert "impl cache in client_storage_cache"

This reverts commit c91a4848916eba87184b3dc4722cea81aec9339d.

the storage cache cannot be used this way

* Revert "Implement prefixed storage"

This reverts commit 4931088126a427082d7310ed7e83b8eea966bc20.

* Impl StoragePrefixedMap for all map storages

* remove comment

* Move all overlays to BTreeMap

* btreemap iteration improvment

* impl for child tries

* impl tests for childs

* fix

* remove cache comment

* Fix grumble
This commit is contained in:
thiolliere
2019-12-09 20:55:11 +01:00
committed by Bastian Köcher
parent fb1eb9d9e4
commit e5b6935c2a
25 changed files with 711 additions and 58 deletions
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substrate/frame/support/procedural/src/lib.rs
+3
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@@ -69,6 +69,7 @@ use proc_macro::TokenStream;
/// * Map: `Foo: map hasher($hash) type => type`: Implements the
/// [`StorageMap`](../frame_support/storage/trait.StorageMap.html) trait using the
/// [`StorageMap generator`](../frame_support/storage/generator/trait.StorageMap.html).
/// And [`StoragePrefixedMap`](../frame_support/storage/trait.StoragePrefixedMap.html).
///
/// `$hash` representing a choice of hashing algorithms available in the
/// [`Hashable`](../frame_support/trait.Hashable.html) trait.
@@ -89,6 +90,7 @@ use proc_macro::TokenStream;
/// * Linked map: `Foo: linked_map hasher($hash) type => type`: Implements the
/// [`StorageLinkedMap`](../frame_support/storage/trait.StorageLinkedMap.html) trait using the
/// [`StorageLinkedMap generator`](../frame_support/storage/generator/trait.StorageLinkedMap.html).
/// And [`StoragePrefixedMap`](../frame_support/storage/trait.StoragePrefixedMap.html).
///
/// `$hash` representing a choice of hashing algorithms available in the
/// [`Hashable`](../frame_support/trait.Hashable.html) trait.
@@ -118,6 +120,7 @@ use proc_macro::TokenStream;
/// * Double map: `Foo: double_map hasher($hash1) u32, $hash2(u32) => u32`: Implements the
/// [`StorageDoubleMap`](../frame_support/storage/trait.StorageDoubleMap.html) trait using the
/// [`StorageDoubleMap generator`](../frame_support/storage/generator/trait.StorageDoubleMap.html).
/// And [`StoragePrefixedMap`](../frame_support/storage/trait.StoragePrefixedMap.html).
///
/// `$hash1` and `$hash2` representing choices of hashing algorithms available in the
/// [`Hashable`](../frame_support/trait.Hashable.html) trait. They must be choosen with care, see