* Introduce NoValuesCursor. From() method is useless because can be replaced by Seek().`
* implement NoValueCursor interface
* use abstract db in restapi
* cleanup .md

* move .Put out of .View and remove deletion of all tombstones when delete acc

* move .Put out of .View and remove deletion of all tombstones when delete acc

* introduce code node

* replace codeMap with code touches

* fix a comment

* fixups to tests

* fix compile error

* fix getnodedata tests

* add tests and test stubs

* add more test stubs

* add test method bodies

* add and fix more tests on trie for new codenode

* add test change code between blocks

* fix crash in stateless

* remove unneded files

* remove comment

* fix deleted account code

* fix resolve set builder for code nodes

* Optimise tombstones

* Replace Update with View

* remove 1 allocation

* Copy keys

* Fix 1 test (perhaps)

* Fix test

Co-authored-by: alex.sharov <AskAlexSharov@gmail.com>

* another way to check if account has storage

* cleanup

* v0 of walk by db version

* save progress, to switch to another task. Put tombstone is still not correct.

* place tombstone only if exists something to hide

* db-based implementation

* db-based implementation

* db-based implementation

* fix prop check

* improve prop check logic

* Need custom logic to skip subtree for account and storage buckets because storage bucket has incarnation in key

* rebase to master

* remove all tombstones when account deleted

* remove all tombstones when account deleted

* added db integrity check

* don't rely on account.Root because it valid only about last incarnation

* remove all tombstones when account deleted

* dial with incarnation in MultiWalk2

* dial with incarnation in MultiWalk2

* when fixedbytes=40 resolver did compare cacheKey with storageKey without removing incarnation

* rebase to master

* rebase to master

Co-authored-by: alex.sharov <alex.sharov@lazada.com>

[Issue 340] Preserve the original when a contract is self-destructed and then its address is touched in the same block (e.g. # 156634) (#397)

* root was unused in BlockChain.StateAt

* TestDoubleAccountRemoval

* Preserve the original when a contract is self-destructed and then its address is touched in the same block (e.g. #
156634)

* implement NoValueCursor interface

* cleanup

* fix tests

* add more stats data to ui

* can't display error

* re-open DB low-level net interface when changing db

* re-open DB low-level net interface when changing db

* fix problem with displaying errors

* run ci

* improve prop check logic

* storage tombstones integrity checks UI

* storage page

* make DB configurable

Co-authored-by: alex.sharov <alex.sharov@lazada.com>

* implement NoValueCursor interface

* cleanup

* fix tests

Co-authored-by: alex.sharov <alex.sharov@lazada.com>

This is supposed to fix the occasional failures in 
TestCancel* on Travis CI.

Includes difficulty tests for EIP2384 aka MuirGlacier.

typo in func name in the comment

This was missing because I forgot to wrap it when bind.CallOpts.From
as added.

* les: separate peer into clientPeer and serverPeer

* les: address comments

This makes eth_call and eth_estimateGas use the zero address
as sender when the "from" parameter is not supplied.

Co-authored-by: Felix Lange <fjl@twurst.com>

The new goja version supports the 'escape' and 'unescape' built-in functions.
This fixes #20693

* Cleanup in blockchain.go

* Fix

* Fix

* Update hack

* Test fix

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4

)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Add revive and phoenix

* store enode address to file, then read it from tester

* store enode address to file, then read it from tester

* rebase master

* fix miss-type

* dbg p2p-sub-protocol, add self-destruct test case

* re-create blockFetcher

* exit syncer loop and start new one

* rebase to master

* use core.GenerateChain

* root miss-match

* introduce reduceComplexity flag

* fix transfer to 0 account

* cleanup

* test-case for intermediate cache

* clean

* clean

* clean

* fix handler panic

Co-authored-by: Alexey Akhunov <akhounov@gmail.com>
Co-authored-by: alex.sharov <alex.sharov@lazada.com>

Fix erroneous incarnation for accounts created and called in the same block (e.g. 0x2c785fa15498fe27f1fc5f809bcd9c10c9481752) (#389)

* Clean up code duplication between IntraBlockState's FinalizeTx & CommitBlock

* checkChangeSets command

* linter

* First attempt at checking account changes

* Reuse runBlock in CheckChangeSets

* linter

* linter

* Optionally include no-changes in the ChangeSets

* linter

* Detect storage changes for account change sets

* Fix post-merge compilation errors

* Use database format compatible with !debug.IsThinHistory()

* PrintChangedAccounts in ChangeSetWriter

* Avoid out-of-bounds access

* Storage changes

* hack FirstContractIncarnation

* Call ChangeSetWriter only once per block

* badger v2 investigation

* buf pool - use native New method and avoid double checks

* db.Open prototype

* db.Tx/Bucket/Cursor prototypes

* Chained config

* Item concept added

* save changes to test on master

* make hack resumable

* Design document v0

* Cursor concept

* less brackets syntax of cursor builder

* benchmarks

* cleanup fs

* test for context cancelations

* test for context cancelations

* test for cursor.Prefix option

* add ForEachKey method

* add ForEachKey method

* add naming explanation

* experiment of non-pointers cursor/bucket

* .Bucket() and .Cursor() doesn't returns error

* .Bucket() and .Cursor() doesn't returns error

* .Bucket() and .Cursor() doesn't returns error

* remove CursorOpts concept

* more test-cases

* simplify open api

* Tx, Bucket, Cursor - now are interfaces

* Tx, Bucket, Cursor - now are interfaces

* switch to interfaces

* rebase master

Co-authored-by: alex.sharov <alex.sharov@lazada.com>

* #remove debug prints

* remove storage-mode="i"

* minnet re-execute hack with checkpoints

* minnet re-execute hack with checkpoints

* rollback to master setup

* mainnet re-exec hack

* rollback some changes

* v0 of "push down" functionality

* move all logic to own functions

* handle case when re-created account already has some storage

* clear path for storage

* try to rely on tree structure (but maybe need to rely on DB because can be intra-block re-creations of account)

* fix some bugs with indexes, moving to tests

* tests added

* make linter happy

* make linter happy

* simplify logic

* adjust comparison of keys with and without incarnation

* test for keyIsBefore

* test for keyIsBefore

* better nibbles alignment

* better nibbles alignment

* cleanup

* continue work on tests

* simplify test

* check tombstone existence before pushing it down.

* put tombstone only when account deleted, not created

* put tombstone only when account has storage

* make linter happy

* test for storage resolver

* make fixedbytes work without incarnation

* fix panic on short keys

* use special comparison only when working with keys from cache

* add blockNr for better tracing

* fix: incorrect tombstone check

* fix: incorrect tombstone check

* trigger ci

* hack for problem block

* more test-cases

* add test case for too long keys

* speedup cached resolver by removing bucket creation transaction

* remove parent type check in pruning, remove unused copy from mutation.put

* dump resolving info on fail

* dump resolving info on fail

* set tombstone everytime for now to check if it will help

* on unload: check parent type, not type of node

* fix wrong order of checking node type

* fix wrong order of checking node type

* rebase to new master

* make linter happy

* rebase to new master

* place tombstone only if acc has storage

* rebase master

* rebase master

* rebase master

* rebase master

Co-authored-by: alex.sharov <alex.sharov@lazada.com>