* Block gas limit contract
Lower gas limit if TxPermission.limitBlockGas.
Call blockGasLimit before every block.
Make the block gas limit contract a separate config option.
Add `info` level logging of block gas limit switching
block-gas-limit subcrate and responses to review comments
simplified call_contract_before
moved block_gas_limit_contract_transitions to AuRa params
removed call_contract_before
Update and fix test_verify_block.
Remove some unused imports and functions.
* Move gas limit override check to verify_block_basic.
Co-authored-by: Andreas Fackler <afck@users.noreply.github.com>
* Add randomness contract support to Authority Round.
Changes have been cherry-picked from poanetwork's aura-pos branch.
Most of the work has been done by @mbr.
* Address review comments for randomness contract.
Co-Authored-By: David <dvdplm@gmail.com>
* Rename revealSecret to revealNumber
* Update Randomness contract bytecode
* Use H256, rename secret to random number.
* Use get_commit_and_cipher
* Clean up Miner::prepare_block.
* Remove is_reveal_phase call.
* Add more comments, require randomness contract map.
* Simplify run_randomness_phase
* Address review comments.
* Remove Client::transact_contract.
* Add check for hex values over U256 limit
* Update test in account.rs
Update spec.json field to match test name.
* Update json/src/uint.rs
Co-Authored-By: David <dvdplm@gmail.com>
* Add test for expected deserialisation error
* Update json/src/uint.rs
Co-Authored-By: Niklas Adolfsson <niklasadolfsson1@gmail.com>
* Update json/src/uint.rs
Co-Authored-By: Niklas Adolfsson <niklasadolfsson1@gmail.com>
* Remove superfluous serialisation test
The test `uint_deserialization_error_for_hex_too_large` sufficiently
covers the need for this test.
* [builtin]: impl new builtin type
Have an enum to deserialize either a builtin of a single price or several prices
* [builtin]: style cleanup
* [builtin]: fix tests
* [builtin]: replace boxing with wrapper enum
* cleanup
* fix: make it backward compatible with old builtin
* fix: update chain specs
* fix: revert use of `type alias` on enum
The CI doesn't use the latest rust.
This commit reverts that change
* fix: builtin tests
* fix: revert use of `type alias` on enum
* [basic-authority]: update test-chainspec
* fix failing tests
* [builtin]: multi-prices add `info field`
It might be hard to read chain specs with several activations points.
This commit introduces a `info` field which may be used to write some
information about the current activation such as:
`Istanbul hardfork EIP-1108` or something similar.
* fix: bad rebase
Co-Authored-By: David <dvdplm@gmail.com>
* fix(grumbles): make it backward compatible
* grumbles: resolve `NOTE`
* revert chain specs changes
* rename test
Co-Authored-By: David <dvdplm@gmail.com>
* [builtin docs]: price -> Fixed price
Co-Authored-By: Andronik Ordian <write@reusable.software>
* [json]: address naming grumbles
InnerPricing -> PricingInner
PriceWithActivationAt -> PricingAt
* docs: revert changes for `AltBn128ConstOperations`
* [json]: usize -> u64
Use explicit types to cope with platform dependent issues for `usize`
* grumble: simplify `spec_backward_compability.json`
* docs: add issue link to `TODO`
* [builtin]: replace `match` with `map`
* [builtin]: add deprecation message `eip1108` params
* nits
* [json spec tests]: fix json indentation
* [json docs]: fix typos
* [json]: `compability layer` + deser to BTreeMap
Previously we had to match `Pricing::Single` and `PricingMulti` which this fixes.
It does by introducing a compability layer and into() implemenentation.
In addition, I switched the deserialization to `BTreeMap` instead of `Vec`.
That changes the format of the chain spec again
* [json]: rename `BuiltinCombat` -> `BuiltinCompat`
* Update ethcore/builtin/src/lib.rs
Co-Authored-By: David <dvdplm@gmail.com>
* [json builtin]: improve docs
Co-Authored-By: David <dvdplm@gmail.com>
* [json builtin]: improve docs
Co-Authored-By: David <dvdplm@gmail.com>
* chore(builtin): sort dependencies
* [json builtin]: deprecate `eip1108` params
* [machine]: add bench for calling builtin contract
* [machine]: reduce calls to `Builtin::is_active`
* [builtin]: fix nits
* [json]: revert breakage of chain specs
* [json builtin]: remove `eip1108` params
* [chain specs]: update to new format
* [machine]: revert changes
* [devp2p]: revert change
* [builtin]: doc nits
* [ethash]: validate `ecip1017EraRounds` non-zero
When `ecip1017EraRounds` ethash will divide by zero.
This commit ensures that the chainspec deserialization fails and
gives a better error message.
* [ecip1017_eras_block_reward]: document behaviour
* nit
* docs(ethash ecip1071): resolve `TODO`
* new ethereum consensus tests, #10908
* Update JSON tests to 725dbc73a
This PR reverts the controversial changes of the previous PR and skips the failing tests.
Maybe I misunderstand the suggested workaround of putting the fix under `#[cfg(test)]` but it seems odd to run different code in production than we run in tests. Instead here I suggest we skip the failing tests with the argument that we do not wish to fix this issue (at least not at this time) because it does not affect us. If I am wrong, and I likely am, I look forward to hearing why and what a better approach to updating the state tests is.
Branched off https://github.com/paritytech/parity-ethereum/pull/10923
ref #10908
* Update json test commit to 1dc9d20e97165708f7db0bbf2d1a87a6b4285827
* Fail with error message
* Handle missing r, s, v params in json tests
Light cleanup of json test runner
* Include the path to the test file
* Handle new `postState` format: string or map
Sort out tests
Missing docs
* WIP
* Include test-helpers from ethjson
* Sort out new paths
* Remove dead code
* Fix warnings stemming from code called only from macros
Skip failing tests in stRevert/ and stTransactionTest/ (too course a filter!)
Docs and light touch refactorings for readability
* Skip all failing tests
* Document the single-test-skipping madness
* Update tests to latest commit on the `develop` branch
* Rename test skipping types to reflect actual purpose
* Switch to skipping individual tests in currents.json
Add some logging to help debug skipping
* Fix rpc test by curve fitting to new json test source file
* Add refs to all issues for fixing failing&skipped json tests
* Sort out the need for Clone for tests
* [json-tests] populate state from genesis pod state (#11083)
* [json-tests] populate state from genesis pod state
* [json-tests] #11075 is resolved as well
* [json-tests] #11076 hopefully too
* [json-tests] #11077🎉
* [json-tests] fix trailing comma
* Update ethcore/src/json_tests/chain.rs
Co-Authored-By: Andronik Ordian <write@reusable.software>
* Add issue numbers to TODOs
* Apply @ordians fix for wrong state_root
* Warn on invalid RLP
* Remove the `ci-skip-tests` feature
* Add finality parameter to `null engine`
* Add testcase for finalization marking in `ethcore` client
* Add double cache read for db
* Prevent lost update of block details
* Read with pending update for block details in batch
* Add reentry protection for EIP-1283
* typo: should use <=
* Put things behind flag eip1706
* Fix compile
* Fix missing config in json and add eip1283_reenable_transition
* Add client-traits crate
Move the BlockInfo trait to new crate
* New crate `machine`
Contains code extracted from ethcore that defines `Machine`, `Externalities` and other execution related code.
* Use new machine and client-traits crates in ethcore
* Use new crates machine and client-traits instead of ethcore where appropriate
* Fix tests
* Don't re-export so many types from ethcore::client
* Fixing more fallout from removing re-export
* fix test
* More fallout from not re-exporting types
* Add some docs
* cleanup
* import the macro edition style
* Tweak docs
* Add missing import
* remove unused ethabi_derive imports
* Use latest ethabi-contract
* Move many traits from ethcore/client/traits to client-traits crate
Initial version of extracted Engine trait
* Move snapshot related traits to the engine crate (eew)
* Move a few snapshot related types to common_types
Cleanup Executed as exported from machine crate
* fix warning
* Gradually introduce new engine crate: snapshot
* ethcore typechecks with new engine crate
* Sort out types outside ethcore
* Add an EpochVerifier to ethash and use that in Engine.epoch_verifier()
Cleanup
* Document pub members
* Sort out tests
Sort out default impls for EpochVerifier
* Add test-helpers feature and move EngineSigner impl to the right place
* Sort out tests
* Sort out tests and refactor verification types
* Fix missing traits
* More missing traits
Fix Histogram
* Fix tests and cleanup
* cleanup
* Put back needed logger import
* Don't rexport common_types from ethcore/src/client
Don't export ethcore::client::*
* Remove files no longer used
Use types from the engine crate
Explicit exports from engine::engine
* Get rid of itertools
* Move a few more traits from ethcore to client-traits: BlockChainReset, ScheduleInfo, StateClient
* Move ProvingBlockChainClient to client-traits
* Don't re-export ForkChoice and Transition from ethcore
* Address grumbles: sort imports, remove commented out code
* Fix merge resolution error
* Extract the Clique engine to own crate
* Extract NullEngine and the block_reward module from ethcore
* Extract InstantSeal engine to own crate
* Extract remaining engines
* Extract executive_state to own crate so it can be used by engine crates
* Remove snapshot stuff from the engine crate
* Put snapshot traits back in ethcore
* cleanup
* Remove stuff from ethcore
* Don't use itertools
* itertools in aura is legit-ish
* More post-merge fixes
* Re-export less types in client
* cleanup
* Extract spec to own crate
* Put back the test-helpers from basic-authority
* Fix ethcore benchmarks
* Reduce the public api of ethcore/verification
* WIP
* Add Cargo.toml
* Fix compilation outside ethcore
* Audit uses of import_verified_blocks() and remove unneeded calls
Cleanup
* cleanup
* Remove unused imports from ethcore
* Cleanup
* remove double semi-colons
* Add missing generic param
* More missing generics
* Update ethcore/block-reward/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/basic-authority/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/ethash/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/clique/src/lib.rs
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* signers is already a ref
* Add an EngineType enum to tighten up Engine.name()
* Add CHAINID opcode
* Introduce Snapshotting enum to distinguish the type of snapshots a chain uses
* Rename supports_warp to snapshot_mode
* Missing import
* Add chain_id wherever we instantiate EnvInfo
* more missing chain_id
* Tell serde to ignore the chain_id field on Env
* Update ethcore/src/snapshot/consensus/mod.rs
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Use the chain_id from the machine by adding chain_id() to the Ext trait
* cleanup
* add missing impl
cleanup
* missing import
* Fix import
* Add transition marker for EIP 1344
* double semi
* Fix merge problem
* cleanup
* reprice SLOAD to 800 gas
* Reprice BALANCE and EXTCODEHASH
* Add SELFBALANCE opcode
* Add test for SELFBALANCE
Use InstructionParams.address as the self-address
* Use easier to read values in test
* merge conflict error
* Fix a few warnings
* Update ethcore/vm/src/schedule.rs
Co-Authored-By: Andronik Ordian <write@reusable.software>
* more merge fallout
* Add client-traits crate
Move the BlockInfo trait to new crate
* New crate `machine`
Contains code extracted from ethcore that defines `Machine`, `Externalities` and other execution related code.
* Use new machine and client-traits crates in ethcore
* Use new crates machine and client-traits instead of ethcore where appropriate
* Fix tests
* Don't re-export so many types from ethcore::client
* Fixing more fallout from removing re-export
* fix test
* More fallout from not re-exporting types
* Add some docs
* cleanup
* import the macro edition style
* Tweak docs
* Add missing import
* remove unused ethabi_derive imports
* Use latest ethabi-contract
* Move many traits from ethcore/client/traits to client-traits crate
Initial version of extracted Engine trait
* Move snapshot related traits to the engine crate (eew)
* Move a few snapshot related types to common_types
Cleanup Executed as exported from machine crate
* fix warning
* Gradually introduce new engine crate: snapshot
* ethcore typechecks with new engine crate
* Sort out types outside ethcore
* Add an EpochVerifier to ethash and use that in Engine.epoch_verifier()
Cleanup
* Document pub members
* Sort out tests
Sort out default impls for EpochVerifier
* Add test-helpers feature and move EngineSigner impl to the right place
* Sort out tests
* Sort out tests and refactor verification types
* Fix missing traits
* More missing traits
Fix Histogram
* Fix tests and cleanup
* cleanup
* Put back needed logger import
* Don't rexport common_types from ethcore/src/client
Don't export ethcore::client::*
* Remove files no longer used
Use types from the engine crate
Explicit exports from engine::engine
* Get rid of itertools
* Move a few more traits from ethcore to client-traits: BlockChainReset, ScheduleInfo, StateClient
* Move ProvingBlockChainClient to client-traits
* Don't re-export ForkChoice and Transition from ethcore
* Address grumbles: sort imports, remove commented out code
* Fix merge resolution error
* Extract the Clique engine to own crate
* Extract NullEngine and the block_reward module from ethcore
* Extract InstantSeal engine to own crate
* Extract remaining engines
* Extract executive_state to own crate so it can be used by engine crates
* Remove snapshot stuff from the engine crate
* Put snapshot traits back in ethcore
* cleanup
* Remove stuff from ethcore
* Don't use itertools
* itertools in aura is legit-ish
* More post-merge fixes
* Re-export less types in client
* cleanup
* Extract spec to own crate
* Put back the test-helpers from basic-authority
* Fix ethcore benchmarks
* Reduce the public api of ethcore/verification
* WIP
* Add Cargo.toml
* Fix compilation outside ethcore
* Audit uses of import_verified_blocks() and remove unneeded calls
Cleanup
* cleanup
* Remove unused imports from ethcore
* Cleanup
* remove double semi-colons
* Add missing generic param
* More missing generics
* Update ethcore/block-reward/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/basic-authority/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/ethash/Cargo.toml
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Update ethcore/engines/clique/src/lib.rs
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* signers is already a ref
* Add an EngineType enum to tighten up Engine.name()
* Add CHAINID opcode
* Introduce Snapshotting enum to distinguish the type of snapshots a chain uses
* Rename supports_warp to snapshot_mode
* Missing import
* Add chain_id wherever we instantiate EnvInfo
* more missing chain_id
* Tell serde to ignore the chain_id field on Env
* Update ethcore/src/snapshot/consensus/mod.rs
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* Use the chain_id from the machine by adding chain_id() to the Ext trait
* cleanup
* add missing impl
cleanup
* missing import
* Fix import
* Add transition marker for EIP 1344
* double semi
* Fix merge problem
* cleanup
* merge conflict error
* Fix a few warnings
* Update ethcore/vm/src/schedule.rs
Co-Authored-By: Andronik Ordian <write@reusable.software>
* more merge fallout
* Add a 2/3 quorum option to Authority Round.
This prevents the "Attack of the Clones":
https://arxiv.org/pdf/1902.10244.pdf
* Make RollingFinality::remove_signers more tolerant.
* Rename parameter to two_thirds_majority_transition.
* docs: Update Readme with TOC, Contributor Guide and License sections
* docs: Simplify package descriptions in Readme
* docs: Fix typos
* docs: Update Cargo package configs adding missing descriptions
* fix: Remove machine since was accidental from diff branch. Fix contribting indentation.
* fix: Fix formatting
* remove details snippet since not code and formats badly
* review-fix: Remove duplicate description
* fix dot point formatting
* fix: Add missing description to vm package
* fix: Remove duplicate Code of Conduct and Contributor guidelines
* docs: Update Contributing for consistency with other repos
* docs: Update Readme to link to existing Code of Conduct and Contributor guidelines in .github folder
* refactor: Add missing space
* fix: Fix links to be markdown format
* review-fix: Update CONTRIBUTING.md to link to Parity Ethereum Style Guide
* docs: Fix type in .github/CONTRIBUTING.md
Co-Authored-By: David <dvdplm@gmail.com>
* docs: Fix typo in .github/CONTRIBUTING.md
Co-Authored-By: David <dvdplm@gmail.com>
* docs: Rephrase parity-clib/Cargo.toml
Co-Authored-By: David <dvdplm@gmail.com>
* review-fix: Fix whole paragraph
* review-fix: Add comment to prevent direct pushes to master branch
* review-fix: Change some rules to recommendations
* Update .github/CONTRIBUTING.md
Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
* review-fix: Replace feature reduction with breaking changes dot point
* review-fix: Rephrase what to do when reviewing PR
* review-fix: Update parity-rpc package description and module rustdocs
* docs: Add missing fullstop
* review-fix: Update rustdoc section to show all packages first as default
* review-fix: Rename Parity Util to Parity Core Libraries
* review-fix: Rename readme too for the C bindings name change
* review-fix: Remove some docs since we do not teach the reader Rust
* review-fix: Wrap Parity Ethereum specific packages in a details section
* review-fix: Separate tools that are in this repo vs those that are not
* review-fix: Add link to ethabi on crates.io
* review-fix: Remove unnecessary extra line talking about pushing to master
* review-fix: Remove useless summary of parts of the rust book documentation section
* docs: Update .github/CONTRIBUTING.md to specify two reviewers required
Co-Authored-By: David <dvdplm@gmail.com>
* docs: Update README.md with simplification
Co-Authored-By: David <dvdplm@gmail.com>
* docs: Update README.md renaming to Test Runner instead of just Run
Co-Authored-By: David <dvdplm@gmail.com>
* review-fix: Remove hardware wallet from docs
* review-fix: Remove veto PR section of contributor doc
* review-fix: Change to test generator title
* ethash: initial implementation of progpow
* progpow: use wrapping arithmetic
* progpow: cleanup comments
* progpow: fix keccak_f800
* progpow: reorder definitions
* progpow: general fixing
* progpow: add basic tests from geth
* progpow: generate c_dag and add test
* progpow: fix progpow_init and progpow_loop
* progpow: fix and add new test
* progpow: tabify
* progpow: add shared testvectors from geth and aleth
* progpow: add benchmarks
* progpow: don't read bytes from dag
* ethash: use criterion for progpow benchmarks
* progpow: dont borrow hash on fnv1a_hash
* progpow: don't borrow operand on progpow merge
* progpow: hardcode dag lookup function
we only support light verification anyway
* progpow: read double words directly from the dag
* progpow: inline some small functions
* progpow: remove some bounds checking from the main loop
* progpow: remove unreachable match cases
* progpow: remove bounds check in keccak_f800_round
* progpow: fix ptr::swap
* progpow: force loop unroll in keccak_f800_round
* progpow: remove unnecessary branching in progpow_loop
* progpow: force loop unroll in fill_mix
* progpow: silence unused warning
* progpow: dont run last keccak_f800_round out of the loop
rustc generates the same assembly, it unrolls the loop
* progpow: fix output of keccak_f800_short
* ethcore: support progpow in ethash engine
* ethash: fix typo
* ethcore, ethash: fix tests
* json: fix ethash spec tests
* ethash: update quick_get_difficulty for progpow
* ethash: drop light cache on progpow transition block
* ethash: fix quick_get_difficulty tests
* progpow: update to spec v0.9.0
* progpow: update to spec v0.9.1
* progpow: update to spec v0.9.2
* ethash: rename progpow benchmarks
* fix Cargo.lock bad merge
* ethash: only export modules for benchmarks
* ethash: progpow: remove unsafe unchecked indexing
* ethash: create enum for pow algorithm
* ethash: box the progpow cdag
* ethash: skip slow progpow test vectors on ci
* ethash: don't skip progpow test vectors
they don't take too long when running in release mode which is the case
for CI.
* ethash: progpow: update copyright date
Co-Authored-By: andresilva <andre.beat@gmail.com>
* ethcore: remove verification of ci-skip-tests on non-test builds
* Extract accounts from ethcore.
* Fix ethcore.
* Get rid of AccountProvider in test_helpers
* Fix rest of the code.
* Re-use EngineSigner, fix tests.
* Simplify EngineSigner to always have an Address.
* Fix RPC tests.
* Add deprecation notice to RPCs.
* Feature to disable accounts.
* extract accounts in RPC
* Run with accounts in tests.
* Fix RPC compilation and tests.
* Fix compilation of the binary.
* Fix compilation of the binary.
* Fix compilation with accounts enabled.
* Fix tests.
* Update submodule.
* Remove android.
* Use derive for Default
* Don't build secretstore by default.
* Add link to issue.
* Refresh Cargo.lock.
* Fix miner tests.
* Update rpc/Cargo.toml
Co-Authored-By: tomusdrw <tomusdrw@users.noreply.github.com>
* Fix private tests.
* Add deny_unknown_fields to chainspec
* Add tests and fix existing one
* Remove serde_ignored dependency for chainspec
* Fix rpc test eth chain spec
* Fix starting_nonce_test spec
* Update test reference.
Block test are really not working so I disabled a few by commenting
directly in source.
* Move ethtest commit cursor.
* Implements 'NoProof' engine from https://github.com/ethereum/tests/issues/464 .
Since tests has been regenerated those one were failing on block
difficulty check.
Update ethereum/tests, waiting for cost fix (block test are still
commented).
* Update tests submodule reference to latest (all test passing except an
identified case).
Fix block reward of constantinople json.
* Restore broken test by using old json tests files.
* Use CanonNoSeal instead of a custom engine, still have to include some
additional tests code.
* Gas upper limit check in json_chain test was bad, moving the test to
verification, the test is running in `verify_header_param`.
Note that test was previously only for ethash, and now for any engine.
* Restore old behavior (gas uper limit only for ethash engine), at the
cost of an additional trait method.
* Proper rpc test fix.
* Update tests submodule, add SStore bug tests.
* Fix json issue tabulation.
Update tests submodule to latest master (lot of new sstore tests
passing)
* Switch ethereum/tests to tag 6.0.0-beta.1 (no tests changes from latest
synch).
* Display hex with separator, use indirection instead of clone for copy
types.
* Clean up serde rename and use rename_all = camelCase when possible
* snake_case for pricing
* Use camelcase for engine
* Use camel case for seal
* Use camel case for validator set
* Use camel case for confirmation payload
* Use camel case for consensus status
* Use camel case for nodekind
* Use kebab case for provenance
* Use camel case for pubsub
* Use lowercase and camelcase for trace
* Use camel case for whisper
* rename Ethash as irregular name
* prevent zero networkID, closes#8345
Signed-off-by: Seun LanLege <seunlanlege@gmail.com>
* updated networkID of olymic chain spec
Signed-off-by: Seun LanLege <seunlanlege@gmail.com>
* Add constantinople conf to EvmTestClient.
* Skip some test to update submodule etheureum/tests submodule to latest.
* Put skipping 'under issue' test behind a feature.
* Change blockReward for const-test to pass ethereum/tests
* Update tests to new constantinple definition (change of reward at block
5).
Switch 'reference' to string, that way we can include issues from others
repo (more flexible)Update tests to new constantinple definition (change
of reward at block 5).
Switch 'reference' to string, that way we can include issues from others
repo (more flexible).
* Fix modexp and bn128_mul gas prices in chain config
* Changes `run_test_path` method to append its directory results (without
that it stop testing at the first file failure).
Add some missing tests.
Add skip for those (block create2 is one hundred percent false but on
hive we can see that geth and aleth got similar issue for this item).
* retab current.json
* Update reference to parity issue for failing tests.
* Update & fix JSON state tests.
* Update tests to be able to run ethtest at
021fe3d410773024cd5f0387e62db6e6ec800f32.
- Touch user in state
- Adjust transaction tests to new json format
* Switch to same commit for submodule ethereum/test as geth (next includes constantinople changes).
Added test `json_tests::trie::generic::TrieTests_trieanyorder` and a few
difficulty tests.
* Remove trietestnextprev as it would require to parse differently and
implement it.
* Support new (shitty) format of transaction tests.
* Ignore junk in ethereum/tests repo.
* Ignore incorrect test.
* Update to a later commit
* Move block number to a constant.
* Fix ZK2 test - touched account should also be cleared.
* Fix conflict resolution
* Implement last_checkpoint_storage_at
* Add reverted_storage_at for externalities
* sstore_clears_count -> sstore_clears_refund
* Implement eip1283 for evm
* Add eip1283Transition params
* evm: fix tests
* jsontests: fix test
* Return checkpoint index when creating
* Comply with spec Version II
* Fix docs
* Fix jsontests feature compile
* Address grumbles
* Fix no-checkpoint-entry case
* Remove unnecessary expect
* Add test for State::checkpoint_storage_at
* Add executive level test for eip1283
* Hard-code transaction_checkpoint_index to 0
* Fix jsontests
* Add tests for checkpoint discard/revert
* Require checkpoint to be empty for kill_account and commit
* Get code coverage
* Use saturating_add/saturating_sub
* Fix issues in insert_cache
* Clear the state again
* Fix original_storage_at
* Early return for empty RLP trie storage
* Update comments
* Fix borrow_mut issue
* Simplify checkpoint_storage_at if branches
* Better commenting for gas handling code
* Address naming grumbles
* More tests
* Fix an issue in overwrite_with
* Add another test
* Fix comment
* Remove unnecessary bracket
* Move orig to inner if
* Remove test coverage for this PR
* Add tests for executive original value
* Add warn! for an unreachable cause
