Commit graph

2924 commits

Author SHA1 Message Date
Evgenii Stratonikov
1ffa1f9ade native: fix contract hashes 2020-12-15 12:58:04 +03:00
Evgenii Stratonikov
5310c7f3ce native: fix NEP17.Transfer cost
It was increased with the introducion of `postTransfer`.
2020-12-15 12:04:10 +03:00
Roman Khimov
7ba1b16854 state: drop unused UTXO remnant 2020-12-14 15:24:15 +03:00
Roman Khimov
2e0fe370cf nef: lower MaxScriptLength
Follow neo-project/neo#2119 changes.
2020-12-14 15:24:15 +03:00
Roman Khimov
cb5ecaefe7 native: drop OnPersistEnd
Now that PostPersist is being run for every native contract we can do our
dirty caching tricks right there instead of OnPersistEnd.
2020-12-14 15:24:15 +03:00
Roman Khimov
938be298f0 core: don't allow calls in verification context
Follow neo-project/neo#2144. System.Contract.CallNative already has "None"
flag, so tests work fine.
2020-12-14 15:24:15 +03:00
Roman Khimov
cf8cf93e7a native: change contract names, move them to separate package
Follow neo-project/neo#2138 and make RPC client's GetNativeContractHash
case-sensitive.
2020-12-14 15:24:15 +03:00
Roman Khimov
aff1469482 native: uppercase token symbols
Follow neo-project/neo#2136.
2020-12-14 15:24:15 +03:00
Roman Khimov
1e9253f1f0 interop: rename Neo.Native.Call to System.Contract.CallNative 2020-12-14 15:24:13 +03:00
Roman Khimov
e97cd9c032 core: fail TestCreateBasicChain when saving the chain
When regenerating RPC server test chain I usually need metadata this test
outputs and the easiest way to get it is make it fail.
2020-12-14 15:23:49 +03:00
Roman Khimov
9a78f1da19 rpc/client: get policy contract hash in Init()
Drop hardcoded value.
2020-12-14 15:23:49 +03:00
Roman Khimov
ab12eee346 native: move contract deployment to management contract
See neo-project/neo#2119.
2020-12-14 15:23:46 +03:00
Roman Khimov
ad3547783d native: drop Neo.Native.Deploy, move contract init to management contract
The contract is almost a stub at the moment, though it does deploy other
contracts.
2020-12-14 13:33:41 +03:00
Roman Khimov
090bee8624 native: change OnPersist/PostPersist handling
Every contract now has these and they're always invoked. See
neo-project/neo#1913 and neo-project/neo#2119.
2020-12-13 21:36:06 +03:00
Roman Khimov
fc361213a7
Merge pull request #1608 from nspcc-dev/core/callflags
core: adjust call flags
2020-12-11 19:23:15 +03:00
Anna Shaleva
2290b91b83 core: fix verification call flag
Previous commit sets AllowCall flag as required for Neo.Native.Call, but
invocation script was loaded with ReadStates flag => native contracts
verification failed.

Other contracts can also make use of AllowCall call flag.
2020-12-11 17:45:12 +03:00
Roman Khimov
742c15cf0b
Merge pull request #1609 from nspcc-dev/fix/json
stackitem: fix JSON encoding
2020-12-11 14:07:21 +03:00
Roman Khimov
1d529dc5b6
Merge pull request #1607 from nspcc-dev/compiler/safe
Set `Safe` flag in emitted manifest
2020-12-11 14:03:55 +03:00
Evgenii Stratonikov
18b331d765 stackitem: fix JSON encoding
Encode both `Buffer` and `ByteString` to UTF-8 bytes.
Follow https://github.com/neo-project/neo/pull/1715 .
2020-12-11 13:30:47 +03:00
Anna Shaleva
53e45d793b core: adjust call flags 2020-12-11 11:38:14 +03:00
Anna Shaleva
fadbae8997 core: rename call flags
Also new States flag is added and ReadOnly flag is adjusted.
2020-12-11 10:34:01 +03:00
Evgenii Stratonikov
4dc5877674 compiler: remove unused code and simplify error handling
After cbf26f3 some errors can't occur.
2020-12-10 18:56:08 +03:00
Anna Shaleva
0b5cf78468 network: add notary request payload 2020-12-10 18:17:31 +03:00
Anna Shaleva
501c0c93c6 core: take into account NotaryAssisted attributes during verification
It's a bug, we have to reserve proper amount of GAS from verification
gas limit for NotaryAssisted attributes.
2020-12-10 18:17:31 +03:00
Anna Shaleva
6d357c3793 core: return a special error from verifyHashAgainstScript
It will help us to distinguish proper `false` verification result from
various verification errors.
2020-12-10 18:17:31 +03:00
Anna Shaleva
2ab0e6c399 core: check stack length before returning false verification result
We must be sure that stack has no other items before returning `false`
verification result. It is an error in both cases, but by preserving the
order we know exactly that it was correct `false` on stack.
2020-12-10 18:17:31 +03:00
Evgenii Stratonikov
ec1ff42872 manifest: add Safe flag for NEP-17 methods 2020-12-10 18:04:49 +03:00
Evgenii Stratonikov
2341ae0c53 compiler: specify safe methods in config 2020-12-10 18:00:43 +03:00
Evgenii Stratonikov
d7194e4da5 compiler: do not check for main package in ConvertToManifest 2020-12-10 17:45:23 +03:00
Evgenii Stratonikov
9fd8577dd9 compiler: use Options in ConvertToManifest() 2020-12-10 17:43:25 +03:00
Evgenii Stratonikov
e63191d31f core: hangle CallingScriptHash correctly
When using native contracts, script hash of second-to-top context
on invocation stack does not always correspond to a real calling
contract.
2020-12-10 16:52:36 +03:00
Evgenii Stratonikov
e903e40085 core: call from native contracts synchronously
Follow neo-project/neo#2130.
2020-12-10 16:43:46 +03:00
Roman Khimov
189d0d801a
Merge pull request #1604 from nspcc-dev/fix/deploy
cli/smartcontract: return error if deploy script failed to run
2020-12-10 15:38:33 +03:00
Evgenii Stratonikov
7368ff09ef rpc: marshal GAS correctly
When using ",string" in JSON struct tag, value is first unmarshaled to
a numeric value (float64 in our case), then to our real type via
`UnmarshalJSON()`, which can lead to rounding errors.
2020-12-10 15:32:00 +03:00
Roman Khimov
a3f91ba8c5
Merge pull request #1603 from nspcc-dev/compiler/types
compiler: enforce `Hash160` and `Hash256` size in literals
2020-12-10 14:55:03 +03:00
Roman Khimov
f3e64e08d7
Merge pull request #1602 from nspcc-dev/fix/test
vmcli/test: run shell after providing input
2020-12-10 14:42:30 +03:00
Evgenii Stratonikov
ff4880249d compiler: enforce Hash160 and Hash256 size in literals
Can be useful to prevent small typos.
2020-12-10 14:11:28 +03:00
Evgenii Stratonikov
37a8550215 compiler: add contract.CallEx interop 2020-12-10 13:45:10 +03:00
Evgenii Stratonikov
ec58bec803 compiler: fix global constant traversal
There can be no global variables, but some global constants.
Introduced in 0b44a430.
2020-12-10 13:45:10 +03:00
Evgenii Stratonikov
b807fd9e7f compiler: rename engine.AppCall() to contract.Call() 2020-12-10 13:45:10 +03:00
Evgenii Stratonikov
c7ce9cd4f6 compiler: defer dir removal right after creation 2020-12-10 13:40:29 +03:00
Evgenii Stratonikov
76a6ddc3a4 vmcli/test: run shell after providing input
In some cases, `Run()` can read from input before we have written
anything to it.
2020-12-10 13:35:52 +03:00
Roman Khimov
d828096cbf
Merge pull request #1599 from nspcc-dev/compiler/debuginfo
compiler: save both VM and smartcontract types
2020-12-09 23:30:59 +03:00
Evgenii Stratonikov
cbf26f315c compiler: save both VM and smartcontract types
VM types are used in debugger, while smartcontract ones are used in
manifest. We can't save only one of them, because conversion in either
side is lossy:
1. VM has `Array` and `Struct` but smartcontract only has `Array`.
2. Smartcontract has `Hash160` etc, which are all `ByteString` or
`Buffer` in VM.

And to spice things a bit more, return type in debugger can be `Void`,
which corresponds to no real stackitem type (as it must exist).
2020-12-09 22:35:22 +03:00
Roman Khimov
02457d9f77
Merge pull request #1597 from nspcc-dev/fix/safemethods
manifest: add `Safe` flag to method descriptor
2020-12-09 16:32:19 +03:00
Roman Khimov
3d0ed6eac3
Merge pull request #1595 from nspcc-dev/tests/network
network: add tests for most of the commands
2020-12-09 15:31:57 +03:00
Evgenii Stratonikov
27624946d9 network/test: add tests for server commands 2020-12-09 15:23:49 +03:00
Evgenii Stratonikov
bd81b19a7a network: fix requestTx()
2 bugs were here:
1. If amount of tx is small, no messages were sent.
2. Correctly cut byte slice if last message is small.
2020-12-09 12:04:10 +03:00
Evgenii Stratonikov
074ba5f394 network: fix GetBlocks command
Return exactly requested amount of hashes.
2020-12-09 12:04:10 +03:00
Evgenii Stratonikov
df801a8539 rpc: marshal GAS in getunclaimedgas as decimal 2020-12-09 11:19:25 +03:00
Evgenii Stratonikov
56b23b718d fixedn: allow to parse big decimals 2020-12-09 11:19:25 +03:00
Evgenii Stratonikov
e4c3339c91 util: move Fixed8 to encoding/fixedn package 2020-12-09 11:18:18 +03:00
Roman Khimov
8ed1d4dfba
Merge pull request #1593 from nspcc-dev/notary_contract_fix
core: allow to change deposit's `till` for owner only
2020-12-08 17:37:44 +03:00
Evgenii Stratonikov
ea4d14d20d manifest/standard: check Safe flag in Comply() 2020-12-08 13:47:05 +03:00
Evgenii Stratonikov
b7e86fa6a3 manifest: add Safe flag to method descriptor
`interop.Contex.AddMethod` sets `Safe` flag for native
contracts. This allows not to forget to change manifest
when changing call flags.
Also fixed invalid `Safe` flags for `Notary` and `Designate` contracts.
2020-12-08 13:27:43 +03:00
Anna Shaleva
74a143cee3 core: allow to change deposit's till for owner only 2020-12-08 10:39:20 +03:00
Roman Khimov
fb13acab94
Merge pull request #1592 from nspcc-dev/dont-reconnect-if-pool-is-connected
network: drop requests to discovery pool when it can't be handled
2020-12-07 10:43:51 +03:00
Roman Khimov
c6dbdddba9
Merge pull request #1591 from nspcc-dev/tests/network
network: add tests for `Message` serialization
2020-12-04 22:40:15 +03:00
Roman Khimov
1526772663 network: drop requests to discovery pool when it can't be handled
It happens from time to time in a four-node private network where there are
seeds (aka CNs) and not a lot of other nodes to connect to.

I don't know how to test for an infinite loop that has no side-effects, so no
test added here.
2020-12-04 21:39:50 +03:00
Evgenii Stratonikov
fc6cb2aa7b network/payload: add missing tests for InventoryType 2020-12-04 15:26:14 +03:00
Evgenii Stratonikov
19a8ccbdb8 network/payload: add missing tests for AddressAndTime 2020-12-04 15:25:55 +03:00
Evgenii Stratonikov
6451a4bed3 network/test: add tests for Message serialization 2020-12-04 15:16:29 +03:00
Evgenii Stratonikov
2dcd366ef9 network: remove extra error check from Message.Encode()
Buffer write error is returned from `Encode()`.
2020-12-04 15:00:35 +03:00
Evgenii Stratonikov
63aebfeae3 network: fix MerkleBlock serialization
1. It contains `block.Base` thus needs network magic.
2. TxCount should match number of hashes.
2020-12-04 14:59:13 +03:00
Evgenii Stratonikov
cd5219086a wallet: export NewAccountFromPrivateKey()
Don't perform back-and-forth conversion, don't handle error
which never occur.
2020-12-04 12:45:53 +03:00
Evgenii Stratonikov
573d1d10c0 cli: add tests for contract command 2020-12-04 11:05:48 +03:00
Evgenii Stratonikov
6e749f4977 core: add tests for crypto interops
Also move related test from `core/`.
2020-12-03 14:14:35 +03:00
Evgenii Stratonikov
d5b4553bb3 keys: allow to create keys on arbitrary curve 2020-12-03 14:06:35 +03:00
Evgenii Stratonikov
5bd8ca9597 core/tests: extend test suite 2020-12-03 14:02:58 +03:00
Evgenii Stratonikov
dcc58b7c44 core: validate manifest before incrementing ID in Contract.Create
Also add more tests.
2020-12-02 15:54:03 +03:00
Evgenii Stratonikov
b203c23515 core: cover enumerator/iterator interops 2020-12-02 15:54:03 +03:00
Evgenii Stratonikov
e4ee7cd407 vm: improve coverage for default interops 2020-12-02 15:54:03 +03:00
Evgenii Stratonikov
d136569ac8 core: move System.Binary.* interops to binary/ package
Also extend test suite.
2020-12-02 15:54:03 +03:00
Evgenii Stratonikov
2eb256014e core: move System.Runtime.* interops to runtime/ package
Also extend test suite.
2020-12-02 15:54:03 +03:00
Roman Khimov
972b0f176d
Merge pull request #1584 from nspcc-dev/tests/vmcli
Add tests for `vmcli`
2020-12-02 13:33:44 +03:00
Evgenii Stratonikov
4aa1a37f3f network: fetch blocks in parallel
Blockcache size is 2000, while max request size is 500.
Try to fetch blocks in chunks starting from current height.
Lower height has priority.
2020-12-02 10:50:35 +03:00
Evgenii Stratonikov
33f13ab1c0 vmcli: add tests 2020-12-02 10:49:37 +03:00
Evgenii Stratonikov
f8728e4f44 vmcli: unify error messages 2020-12-02 10:49:37 +03:00
Evgenii Stratonikov
bea5125d42 vmcli: return after error in break 2020-12-02 10:49:37 +03:00
Evgenii Stratonikov
d7ffa89811 vmcli: set breakpoint before the instruction
Breakpoint should occur before actual instruction execution.
2020-12-02 10:49:37 +03:00
Evgenii Stratonikov
2f39701d76 vm: provide writer in PrintOps()
Make it more flexible and testable. Fallback to using
stdout if no writer is provided.
2020-12-02 10:49:37 +03:00
Roman Khimov
9211cb636c
Merge pull request #1555 from nspcc-dev/constant-contract-hashes
Constant contract hashes
2020-12-01 14:12:26 +03:00
Evgenii Stratonikov
1db27c004e native: do not fail on missing request in Oracle.PostPersist() 2020-12-01 12:29:18 +03:00
Evgenii Stratonikov
cba117352c mempool: correctly handle tx with oracle response
If tx with the same oracle response ID is already in mempool,
replace it if network fee of added transaction is higher and
return error otherwise.
2020-12-01 12:29:18 +03:00
Evgenii Stratonikov
3085710e9b native: call onPayment only during transfer
OnPayment method should be called during GAS distribution
and NEO transfer.
2020-11-30 13:05:44 +03:00
Roman Khimov
1672887123 nef: increase version field to 32 bytes
Follow recent C# changes.
2020-11-30 11:26:29 +03:00
Roman Khimov
470e1592d9 request: make CreateDeploymentScript work with NEFs
And use it in testing code.
2020-11-27 21:53:39 +03:00
Roman Khimov
4d0eaef510 nef: treat Version as string
Following changes in C# code and simpilifying things a lot.
2020-11-27 21:47:08 +03:00
Roman Khimov
e12c52f588 nef: change checksum calculation scheme
It's now being calculated for whole file, not just header.
2020-11-27 21:47:08 +03:00
Roman Khimov
d93aa745bb contract: avoid going to the DB for entry scripts
This optimizes out DB access for non-deployed contracts under the assumption
that deployed ones are always loaded via `LoadScriptWithHash` (and if they're
not --- it's a bug anyway with the new hashing model) which actually is a very
popular case (every entry script does that).
2020-11-27 21:47:08 +03:00
Roman Khimov
49f6b33eae core: fix contract-based verification script hash
When using contract-based verification it's important to load contract's hash
along with the script, otherwise it won't be valid.

Simplify things along the way.
2020-11-27 21:47:08 +03:00
Roman Khimov
0c7e727859 nef: drop scripthash
It's no longer a part of the file.
2020-11-27 21:47:08 +03:00
Roman Khimov
1cf1fe5d74 *: introduce stable contract hashes
Follow neo-project/neo#2044.
2020-11-27 21:47:08 +03:00
Roman Khimov
7044e9be40
Merge pull request #1549 from nspcc-dev/core/fix_committee_update
core: update committee every [committee length] blocks
2020-11-27 11:04:40 +03:00
Roman Khimov
c5e39dfabf nef: forbid NEFs with zero-length scripts 2020-11-26 18:30:53 +03:00
Roman Khimov
b92ea2a48a manifest/compiler: drop hashes from ABI and debug info
See neo-project/neo-devpack-dotnet#391 and neo-project/neo#2044.
2020-11-26 18:30:49 +03:00
Roman Khimov
34d2eaf00e manifest: update maximum possible length
As per neo-project/neo#2002.
2020-11-26 18:07:20 +03:00
Roman Khimov
586dedecad
Merge pull request #1567 from nspcc-dev/tests/stillrelevant
core: add tests for `Blockchain.isTxStillRelevant()`
2020-11-26 17:28:21 +03:00
Evgenii Stratonikov
9f26d7b249 core: add tests for Blockchain.isTxStillRelevant() 2020-11-26 16:04:43 +03:00
Roman Khimov
f8957f10d7
Merge pull request #1566 from nspcc-dev/contractjson
rpc: marshal fees and GAS as Fixed8 decimal
2020-11-26 15:12:35 +03:00
Evgenii Stratonikov
a79b12b4d4 rpc: marshal fees and GAS as Fixed8 decimal 2020-11-26 15:04:30 +03:00
Roman Khimov
eca8b02c25
Merge pull request #1564 from nspcc-dev/tests/removeold
core: add test for `RemoveUntraceableBlocks` setting
2020-11-26 14:46:28 +03:00
Evgenii Stratonikov
75a9a42403 compiler: check emitted event names
Check that all `Notify` invocations in source correspond to some event
in manifest.
Helpful for typos such as `transfer` instead of `Transfer`.
2020-11-26 13:49:58 +03:00
Evgenii Stratonikov
25f1db6de0 compiler: check supported standards
Check that emitted manifest complies with supported standards.
This can be made a separate flag.
2020-11-26 12:51:39 +03:00
Evgenii Stratonikov
279b769fa3 manifest: support interface checking
There are some standards (NEP5, etc.) which impose
some restrictions on what methods and events a contract
must contain and their signatures. This commit supports
checking if arbitrary manifest complies with the standard.
2020-11-26 12:50:29 +03:00
Evgenii Stratonikov
3a986d8635 core: add test for RemoveUntraceableBlocks setting 2020-11-26 12:33:34 +03:00
Roman Khimov
882c214646
Merge pull request #1561 from nspcc-dev/removeold
core: remove old blocks and transactions
2020-11-25 19:14:32 +03:00
Roman Khimov
ef15139179
Merge pull request #1557 from nspcc-dev/signature_collection/notary_contract
core: implement Notary contract
2020-11-25 19:14:02 +03:00
Anna Shaleva
9faa63453c core: refactore some tests
They have a lot of common code.
2020-11-25 18:37:29 +03:00
Anna Shaleva
17842dabd6 core: implement native Notary contract 2020-11-25 18:37:29 +03:00
Anna Shaleva
c013522296 core: remove native contracts' name method
We have `name` in contract manifest.
2020-11-25 18:37:29 +03:00
Anna Shaleva
0f68528095 core: add callback to VM context 2020-11-25 18:37:29 +03:00
Anna Shaleva
c9acc43023 core: invoke contract verification script with AllowStates flag
We should call contract's `verify` with AllowStates flag.
2020-11-25 18:37:29 +03:00
Anna Shaleva
eca27055b8 core: fix NEP17 Transfer event
`Transfer` event declaration was placed at the wrong part of
`newNEP17Native`, that's why it had incorrect parameters.

Fixed.
2020-11-25 18:37:29 +03:00
Anna Shaleva
2fee69f26f core: add missing onPersist and postPersist methods to natives
Although not every contract is persisted (see
https://github.com/neo-project/neo/blob/master/src/neo/Ledger/Blockchain.cs#L94)
we have to add `onPersist` and `postPersist` methods to every
native contract in order to display them in manifest for users and
follow C# behaviour. In C# there are `onPersist` and `postPersist`
methods in base native contract class, see
https://github.com/neo-project/neo/blob/master/src/neo/SmartContract/Native/NativeContract.cs#L141
and
https://github.com/neo-project/neo/blob/master/src/neo/SmartContract/Native/NativeContract.cs#L148
2020-11-25 18:37:29 +03:00
Anna Shaleva
97069a05d5 core: fix locking in storeBlock 2020-11-25 18:37:29 +03:00
Anna Shaleva
52cf328296 core: add NotaryAssisted transaction attribute 2020-11-25 18:37:29 +03:00
Anna Shaleva
fc9f0034c9 core: adjust verifyTxAttributes for HighPriority attributes
The fact that they have hight priority does not mean that cheks for other
attributes should be skipped.
2020-11-25 18:37:29 +03:00
Anna Shaleva
8cdf2d3464 core: unify verifyTxAttributes errors
We already have pretty ErrInvalidAttribute error, so I think that all
other `verifyTxAttributes` errors should be wrappers around ErrInvalidAttr.
2020-11-25 18:37:29 +03:00
Anna Shaleva
31aa66a4a4 core: check the length of NotValidBefore attr while decoding
DecodeBinary throws panic otherwise.
2020-11-25 18:37:29 +03:00
Anna Shaleva
8548786444 core: do not rewrite binreader error for bad Conflicts attr
We should keep the original BinReader error untouched in case if
it is exists.
2020-11-25 18:37:24 +03:00
Evgenii Stratonikov
28b4d4e2f8 core: remove old blocks and transactions
Remove blocks with `height <= current height - MaxTraceableBlocks`
together with transactions.
2020-11-25 16:38:20 +03:00
Evgenii Stratonikov
54b177cf40 dao: store blocks/txransactions by big-endian hash
There is no need for additional allocations.
2020-11-25 14:03:43 +03:00
Roman Khimov
2ce3c8b75f network: treat unsolicited addr commands as errors
See neo-project/neo#2097.
2020-11-25 13:34:38 +03:00
Anna Shaleva
b00eb51c55 core: add P2PNotary designated role 2020-11-24 18:47:09 +03:00
Evgenii Stratonikov
67f26859a8 scripts: implement script for creating dumps
This is useful for creating dumps providing various load
to benchmark restore or check compatibility with C# nodes.

Related #1472.
2020-11-24 16:47:33 +03:00
Evgenii Stratonikov
6f7284906a blockchainer: allow to dump/restore chain 2020-11-24 16:43:11 +03:00
Evgenii Stratonikov
966b50f2ae core: save StateRootInHeader in genesis block 2020-11-24 16:39:56 +03:00
Evgenii Stratonikov
7d91a3a89e pkg: move internal/ package to the root directory
This way we can use it in scripts and cli.
2020-11-24 16:39:56 +03:00
Evgenii Stratonikov
31eca342eb *: replace all NEP5 occurences to NEP17 2020-11-24 13:08:24 +03:00
Evgenii Stratonikov
b97dfae8d8 native: replace NEP-5 with NEP-17 2020-11-24 13:08:23 +03:00
Evgenii Stratonikov
a5914f89fa core: allow to provide block in GetTestVM()
Sometimes amount of GAS consumed depends on block height.
2020-11-24 12:17:29 +03:00
Evgenii Stratonikov
42ae226f9e native: use proper stack for result
When native method calls other contract result should be put
on the stack of current context. With oracles this problem wasn't
noticed because of void return type.
2020-11-24 12:17:28 +03:00
Evgenii Stratonikov
4de233b339 emit: allow to emit nested arrays 2020-11-24 11:23:44 +03:00
Evgenii Stratonikov
c849176be7 manifest: include contract Name 2020-11-24 11:23:44 +03:00
Evgenii Stratonikov
8e60a65b55 rpc: implement verifyproof RPC
Test getproof and verifyproof together.
2020-11-20 18:06:22 +03:00
Evgenii Stratonikov
e38e8aa48a rpc: implement getproof RPC 2020-11-20 18:06:22 +03:00
Evgenii Stratonikov
6b42e9306a rpc/server: implement getstateheight RPC 2020-11-20 18:06:21 +03:00
Evgenii Stratonikov
4de22247d5 rpc/server: implement getstateroot RPC 2020-11-20 17:16:33 +03:00
Evgenii Stratonikov
1869d6d460 core: allow to use state root in header 2020-11-20 17:16:32 +03:00
Evgenii Stratonikov
3025b42c65 consensus: assume non-nil message in decodeData
`nil` message is occuring only in tests to check that
no unnecessary decoding is done on errors.
2020-11-20 17:14:19 +03:00
Evgenii Stratonikov
85f927d892 mpt: implement reference counting
Also postpone MPT initialization until `storeBlock`
because we need to read-and-check or save info about refcounting
depending on starting height.
2020-11-20 16:50:30 +03:00
Evgenii Stratonikov
1c559634aa mpt: fill cached fields when getting node from store
Node which has been got from store shouldn't be flushed again.
2020-11-19 12:25:43 +03:00
Evgenii Stratonikov
fd9ff4102a mpt: export func for decoding node with type
`NodeObject` can contain auxilliary fields and shouldn't be used from outside.
2020-11-19 12:25:43 +03:00
Roman Khimov
2f824c590a
Merge pull request #1556 from nspcc-dev/allow-null-oracle-filters
Allow null oracle filters
2020-11-19 10:30:22 +03:00
Roman Khimov
eef921b8e0 native: allow NULL filter in oracle requests
Follow neo-project/neo#2067
2020-11-18 23:59:13 +03:00
Roman Khimov
4640ba2758
Merge pull request #1551 from nspcc-dev/core/adjust_runtime_notify
core: adjust System.Runtime.Notify interop
2020-11-18 21:40:54 +03:00
Anna Shaleva
ec8ebc292c core: restrict notification size for System.Runtime.Notify 2020-11-17 16:27:51 +03:00
Anna Shaleva
8e29a200c0 rpc: adjust NEP5 transfers amount JSON marshalling
This committ fixes the difference between Go and C# nodes:

Go:
```
{
   "jsonrpc" : "2.0",
   "result" : {
      "received" : [
         {
            "blockindex" : 65,
            "txhash" : "0x394f851cf167d664c0dbcf98e2e64f2da23022fd7943dcb914492529de20a945",
            "transfernotifyindex" : 0,
            "timestamp" : 1605535020126,
            "transferaddress" : "NUVPACMnKFhpuHjsRjhUvXz1XhqfGZYVtY",
            "amount" : "29999999",
            "assethash" : "0x668e0c1f9d7b70a99dd9e06eadd4c784d641afbc"
         }
      ],
      "address" : "NULwe3UAHckN2fzNdcVg31tDiaYtMDwANt",
      "sent" : []
   },
   "id" : 1
}
```

C#:
```
{
   "id" : 1,
   "result" : {
      "address" : "NULwe3UAHckN2fzNdcVg31tDiaYtMDwANt",
      "sent" : [],
      "received" : [
	 {
	    "transferaddress" : "NUVPACMnKFhpuHjsRjhUvXz1XhqfGZYVtY",
	    "timestamp" : 1605535020126,
	    "txhash" : "0x394f851cf167d664c0dbcf98e2e64f2da23022fd7943dcb914492529de20a945",
	    "blockindex" : 65,
	    "transfernotifyindex" : 0,
	    "amount" : "2999999900000000",
	    "assethash" : "0x668e0c1f9d7b70a99dd9e06eadd4c784d641afbc"
	 }
      ]
   },
   "jsonrpc" : "2.0"
}
```
2020-11-17 15:50:19 +03:00
Anna Shaleva
933bb4ca75 core: update committee every [committee length] blocks
Was changed in https://github.com/neo-project/neo/pull/1848. Affects
storage dumps.
2020-11-17 11:22:32 +03:00
Anna Shaleva
054e60c0cf core: remove NodeList from Oracle storage
The reference implementation does not store NodeList. This commit fixes
state difference for genesis block.
2020-11-16 19:09:34 +03:00
Roman Khimov
88cee80a58
Merge pull request #1543 from nspcc-dev/compatibility-fixes
rpc, cli: tiny compatibility fixes
2020-11-16 15:53:42 +03:00
Anna Shaleva
083879838c rpc: adjust getrawtransaction and gettransactionheight RPC call
We should return verbose transaction in case if it is in the mempool
from `getrawtransaction`. We also shouldn't return height from
`gettransactionheight` in case if transaction is in the mempool.
2020-11-16 13:25:42 +03:00
Roman Khimov
3cb945f022 manifest: simplify marshaling 2020-11-13 21:46:26 +03:00
Roman Khimov
286d9185f4 smartcontract: remove contract features
We're featureless now, all contracts have access to storage and payable status
is to be determined via new NEP. Follow neo-project/neo#2060.
2020-11-13 21:26:23 +03:00
Roman Khimov
112fa5b92d smartcontract: drop unused ContractDetails
That's a remnant from 2.0.
2020-11-13 21:00:54 +03:00
Evgenii Stratonikov
adf403666f native: decode storage item in Seek 2020-11-13 17:33:00 +03:00
Anna Shaleva
31cf71fb62 rpc: use default Uint160 marshaller for result.NEP5Balance.Asset
To match C# behaviour we should marshal asset hash with `0x` prefix.
2020-11-13 12:28:31 +03:00
Roman Khimov
0f827ee6ba
Merge pull request #1531 from nspcc-dev/core/applicationlog_with_multiple_triggers
core, rpc: store multiple execution results for single hash
2020-11-12 19:05:22 +03:00
Roman Khimov
543871fb2c
Merge pull request #1541 from nspcc-dev/core/fix_nef_getversion
smartcontract: fix nef.GetVersion
2020-11-12 17:56:12 +03:00
Anna Shaleva
251a660b85 smartcontract: ignore case in trigger.FromString 2020-11-12 17:49:28 +03:00
Anna Shaleva
d6992cb5c4 core: marshal block hash for AppExecResult [NotificationsSubsystem] 2020-11-12 17:43:20 +03:00
Anna Shaleva
0b15ca8bd0 rpc: add trigger parameter to getapplicationlog 2020-11-12 17:43:11 +03:00
Anna Shaleva
9c3d8cd398 smartcontract: fix nef.GetVersion
It should be able to parse versions like `1.1.1-rc.1`.

Close #1540.
2020-11-12 17:08:54 +03:00
Anna Shaleva
7ca93e76ac core, rpc: allow to store several AppExecResult for a single hash
It is required for we have several executions per block.
2020-11-12 16:24:39 +03:00
Roman Khimov
2712ef6e5a
Merge pull request #1537 from nspcc-dev/rpc/unify_base64
rpc: use base64 for `submitblock` and `sendrawtransaction`
2020-11-12 15:49:39 +03:00
Roman Khimov
9142906abe
Merge pull request #1539 from nspcc-dev/core/fix_mempool_test
core: fix failing mempool test
2020-11-12 15:48:28 +03:00
Roman Khimov
11a224057b
Merge pull request #1536 from nspcc-dev/feature/retransmit3
network: retransmit stale transactions (master)
2020-11-12 15:47:00 +03:00
Anna Shaleva
20f8fe5699 rpc: use base64 for submitblock and sendrawtransaction
Changes ported from https://github.com/neo-project/neo-modules/pull/394.
2020-11-12 15:21:35 +03:00
Anna Shaleva
a84e4c1e89 core: make some checks in TestMempoolAddRemoveConflicts non-critical
It will help to investigate test failures.
2020-11-12 15:14:32 +03:00
Anna Shaleva
54e6bcad12 core: fix failing mempool test
There might be a case when identical nonces are generated for tx6, tx7 or
tx8 (they are not in mempool, so each of them pass mempool-presence
check). In this case test fails due to the lack of hashes into mp.conflicts
map (two of tx6, tx7 or tx8 have identical hashes) with the following
error:

```
=== RUN   TestMempoolAddRemoveConflicts
--- FAIL: TestMempoolAddRemoveConflicts (0.00s)
    mem_pool_test.go:376:
        	Error Trace:	mem_pool_test.go:376
        	Error:      	Not equal:
        	            	expected: 4
        	            	actual  : 3
        	Test:       	TestMempoolAddRemoveConflicts
```

Fixed by maling the nonce non-random.
2020-11-12 15:05:01 +03:00
Anna Shaleva
b51eb7f5ef core: update opcodes prices
Changes ported from https://github.com/neo-project/neo/pull/2020.
2020-11-12 14:20:26 +03:00
Evgenii Stratonikov
3e5b84348d network: retransmit stale transactions 2020-11-12 13:51:44 +03:00
Anna Shaleva
01296bda5f core: remove policy default values initialisation 2020-11-10 18:05:40 +03:00
Roman Khimov
62d6f3ba22
Merge pull request #1530 from nspcc-dev/syscall/atoi
core: implement `System.Binary.Atoi/Itoa` syscalls
2020-11-10 16:39:02 +03:00
Evgenii Stratonikov
d193e16662 compiler: support System.Binary.Atoi/Itoa syscalls 2020-11-10 16:15:10 +03:00
Evgenii Stratonikov
e4bf531e3e core: implement System.Binary.Atoi/Itoa syscalls
They follow C# conversion rules, but differ from our `bigint` module
conversions:
1. String must be big-endian.
2. Sign extension is 4-bit in size (single hex character)
   and not 8-byte.
2020-11-10 16:15:10 +03:00
Evgenii Stratonikov
54992ad4f3 core: provide account in calculate claimable
`getunclaimedgas` RPC should return all GAS available to claim.
2020-11-10 16:08:21 +03:00
Evgenii Stratonikov
860c146260 native: increase committee GAS bounty
Follow neo-project/neo#2049 .
2020-11-10 15:30:31 +03:00
Evgenii Stratonikov
af583c14ea native: add GAS rewards for voters
Close #1348.
2020-11-10 15:30:30 +03:00
Evgenii Stratonikov
a3c7130ab2 native: cache committee together with votes 2020-11-10 15:23:06 +03:00
Roman Khimov
ede2b05f29
Merge pull request #1529 from nspcc-dev/fix/nextconsensus
consensus: update NextConsensus only when committee is recalculated
2020-11-10 10:24:35 +03:00
Evgenii Stratonikov
c30d891aa9 consensus: update NextConsensus only when committee is recalculated 2020-11-09 17:35:32 +03:00
Roman Khimov
a1ce3d2db2 transaction: add new oracle response codes
Follow neo-project/neo#2037.
2020-11-09 16:54:09 +03:00
Roman Khimov
a9dddf893a
Merge pull request #1525 from nspcc-dev/rpc/base64
rpc: return bse64 bytes from `getblock`, `getblockheader`, `getrawtx`
2020-11-09 10:48:28 +03:00
Anna Shaleva
6bb81d9b51 rpc: return bse64 bytes from getblock, getblockheader, getrawtx
Close #1522
2020-11-09 10:29:33 +03:00
Roman Khimov
58f384a323
Merge pull request #1526 from nspcc-dev/improve-worst-case-reverseitems
vm: improve REVERSEITEMS for 1M Buffer
2020-11-07 23:18:34 +03:00
Roman Khimov
bf9ecc2bd3 vm: improve REVERSEITEMS for 1M Buffer
Before:
BenchmarkOpcodes/REVERSEITEMS/buffer/1M-8                   1680            758747 ns/op

After:
BenchmarkOpcodes/REVERSEITEMS/buffer/1M-8                   2649            442720 ns/op
2020-11-06 23:31:26 +03:00
Roman Khimov
536f488f0c
Merge pull request #1514 from nspcc-dev/rpc/batch_requests
rpc: allow batch JSON-RPC requests
2020-11-06 17:27:23 +03:00
Anna Shaleva
6ee919747f rpc: allow batch JSON-RPC requests
Close #1509
2020-11-06 17:06:20 +03:00
Roman Khimov
bdd073aad7
Merge pull request #1520 from nspcc-dev/tune-some-limits
Tune some limits
2020-11-06 15:35:44 +03:00
Roman Khimov
0ee377792e
Merge pull request #1519 from nspcc-dev/designate-role-history
native: implement designate contract history retention
2020-11-06 15:35:18 +03:00
Roman Khimov
47421f23f4 native: add events to oracle contract
Follow neo-project/neo#2036.
2020-11-06 13:49:07 +03:00
Roman Khimov
9e781bff47 native: implement designate contract history retention
Follow neo-project/neo#2007. Fix getDesignatedByRole price along the way.
2020-11-06 13:46:40 +03:00
Roman Khimov
b233158c9f transaction: lower MaxValidUntilBlockIncrement
Follow neo-project/neo#2042.
2020-11-06 13:41:46 +03:00
Roman Khimov
b327308df8 core/config: move MaxTraceableBlocks to configuration file
Follow neo-project/neo#2042, use 2102400 setting for mainnet/testnet and
200000 for private networks.
2020-11-06 13:41:46 +03:00
Roman Khimov
39a38dc5f5 transaction: raise max oracle response size
Follow neo-project/neo#1984.
2020-11-06 13:41:46 +03:00
Roman Khimov
679846c1a1
Merge pull request #1426 from nspcc-dev/rpc/getcontractstate_by_id_or_name
rpc: allow to `getcontractstate` by id or name
2020-11-05 13:17:42 +03:00
Roman Khimov
d7502debba core: adjust storage update fees
Follow neo-project/neo#2033.
2020-11-03 22:50:40 +03:00
Anna Shaleva
b8a88f9378 rpc: allow to use address, id or name instead of scripthash [Client]
... for getcontractstate RPC client method.
2020-11-03 17:58:24 +03:00
Anna Shaleva
d3daaafbe4 rpc: allow to get contract scripthash from address, id or name [Server]
... for `invokefunction` RPC method.
2020-11-03 17:25:46 +03:00
Anna Shaleva
15a939b1da rpc: allow to getcontractstate by address, id or name
close #1423
2020-11-03 17:23:49 +03:00
Roman Khimov
eaa260474f trigger/core: split System trigger into OnPerist and PostPersist
Follow neo-project/neo#2022.
2020-10-29 19:17:07 +03:00
Roman Khimov
044786b995 core: use Application trigger in CalculateClaimable()
It doesn't need a System one.
2020-10-29 19:17:07 +03:00
Roman Khimov
2522271161 vm: use Application trigger by default
Don't mess with System, it's too powerful to be the default.
2020-10-29 19:17:07 +03:00
Roman Khimov
2924ecd453 core: use ic.SpawnVM() in tests, not vm.New()
vm.New() sets some arbitrary trigger while interop context always sets
something appropriate according to its state.
2020-10-29 19:17:07 +03:00
Roman Khimov
d4da811d12
Merge pull request #1507 from nspcc-dev/conflicts_attr
core: implement Conflicts transaction attribute
2020-10-29 16:54:58 +03:00
Anna Shaleva
ec63d5c456 core: add conflicts attribute
Close #1491
2020-10-29 10:57:31 +03:00
Roman Khimov
0eb4ad8564
Merge pull request #1508 from nspcc-dev/core/check_witness_tests
core: add CheckWitness tests
2020-10-27 15:56:35 +03:00
Roman Khimov
c4a4a84515 native: lower voting fee
Follow neo-project/neo#2010.
2020-10-26 22:12:56 +03:00
Anna Shaleva
5a15e6b54c core: add tests for CheckWitness
Close #1366
2020-10-26 20:30:45 +03:00
Anna Shaleva
204d7f1c6a core: refactor runtime.CheckWitness interop
Removed unreachable code, see
8fed383523

runtime.CheckHashedWitness can only be used for transaction
verification, the other two options from reference implementation (block
and consensus payload) have separate methods for verification.
2020-10-26 20:26:21 +03:00
Roman Khimov
eca1221d22
Merge pull request #1504 from nspcc-dev/core/native_serialisation
core: native serialisation
2020-10-23 18:38:35 +03:00
Anna Shaleva
f259a614de core: add transaction.HasSigner method 2020-10-23 16:32:26 +03:00
Anna Shaleva
0232bbcb0c core: refactor GASRecord handling
We should store each GAS record as
{
    Key: ContractID + RecordsPrefix + RecordID,
    Value: RecordValue,
}
So don't use state.GASRecord for storing anymore. However, it's still
useful to cache GasRecord values by using state.GASRecords, because we
have to keep GASIndexPairs sorted by indexes.
2020-10-23 12:49:12 +03:00
Anna Shaleva
0da01fde7f core: refactor blocked accounts logic 2020-10-23 11:42:30 +03:00
Roman Khimov
1956f2c079
Merge pull request #1496 from nspcc-dev/signatures-collection
core: implement NotValidBefore and Reserved tx attributes
2020-10-23 11:26:49 +03:00
Anna Shaleva
7947e99a1e core: add transaction.GetAttributes 2020-10-23 11:05:03 +03:00
Anna Shaleva
95630b72e8 core: verify transaction attributes before adding it into mempool
Attributes check should be done before adding transaction to
the pool, otherwise there might be a case when transaction with invalid
attributes is in the pool.
2020-10-23 11:05:03 +03:00
Anna Shaleva
a6579a05ac core: refactor transaction.Attribute unmarshalling 2020-10-23 11:05:03 +03:00
Anna Shaleva
09b8b8de73 core: reserve attributes range for experimantal purposes 2020-10-23 11:04:59 +03:00
Anna Shaleva
368ff820b3 core: add NotValidBefore transaction attribute
Close #1490
2020-10-23 11:02:46 +03:00
Anna Shaleva
6685f8eba9 core: restrict the maximum number of requests per URL 2020-10-22 11:32:02 +03:00
Anna Shaleva
7c232e2ddc core: add max nodes count restriction to designate contract 2020-10-22 11:32:02 +03:00
Roman Khimov
8be7cd4bff
Merge pull request #1489 from nspcc-dev/rpc/invoke_with_base64
rpc, cli: use base64 script encoding for Invoke* calls; add Magic to `getversion` RPC call
2020-10-19 16:17:06 +03:00
Roman Khimov
62be070737
Merge pull request #1499 from nspcc-dev/rpc/notifications_subscriptions_fix
rpc: fix Matches and marshalling for notification events
2020-10-19 16:15:39 +03:00
Anna Shaleva
590be7a58d rpc, cli: remove Network from RPC client and cli 2020-10-19 16:11:11 +03:00
Roman Khimov
4da3111767
Merge pull request #1497 from nspcc-dev/compiler/slice
compiler: refactor void calls processing
2020-10-19 13:59:27 +03:00
Anna Shaleva
64d1946fbb rpc: fix Matches and marshalling for notification events
Close #1494. Marshalling went wrong due to the incorrect pointers usage.
Reproduced and fixed.
2020-10-19 13:44:20 +03:00
Anna Shaleva
474d2dfb65 rpc: add Magic to Version 2020-10-19 11:51:27 +03:00
Anna Shaleva
c50f3db6ad rpc, cli: encode script in base64 for Invoke* 2020-10-19 11:51:27 +03:00
Evgenii Stratonikov
01ccaefe2f compiler: refactor void calls processing
Call result is not used only if it occurs inside a `ExprStmt`.
Otherwise (`IfStmt`, `BinExpr`...) it is used.

Fix #1495.
2020-10-19 10:43:47 +03:00
Roman Khimov
d58c50fb77
Merge pull request #1418 from nspcc-dev/rpc/invoke_with_sender
rpc: add tx to invoke* results, support hex for uint160 params
2020-10-17 17:54:12 +03:00
Anna Shaleva
ceb7ea9737 rpc: allow both base58 and hex for Uint160 RPC server parameters
`getunclaimedgas` RPC-call allows to use both base58 and hex
representations for uint160.
2020-10-17 00:42:45 +03:00
Anna Shaleva
19a2e3bb91 rpc: add transaction field to InvokeResult 2020-10-17 00:42:39 +03:00
Roman Khimov
6849499f56
Merge pull request #1493 from nspcc-dev/vm-opcode-bench
vm: add opcode benchmark
2020-10-16 11:02:04 +03:00
Roman Khimov
07770ea4a5
Merge pull request #1492 from nspcc-dev/minor-vm-fixes
Minor VM fixes
2020-10-15 18:10:41 +03:00
Roman Khimov
0709e20fbb vm: add opcode benchmark
For future optimizations and price adjustments.
2020-10-15 16:27:36 +03:00
Roman Khimov
27a01c7759 vm: optimize stack traversal on exception handling
Before:
BenchmarkOpcodes/THROW/0/1-8       10000               506 ns/op
BenchmarkOpcodes/THROW/0/16-8      10000               524 ns/op
BenchmarkOpcodes/THROW/255/0-8     10000             49363 ns/op
BenchmarkOpcodes/THROW/1023/0-8                    10000           1628480 ns/op

After:
BenchmarkOpcodes/THROW/0/1-8       10000               575 ns/op
BenchmarkOpcodes/THROW/0/16-8      10000               516 ns/op
BenchmarkOpcodes/THROW/255/0-8     10000              8290 ns/op
BenchmarkOpcodes/THROW/1023/0-8                    10000             34605 ns/op
2020-10-15 16:20:34 +03:00
Roman Khimov
3d8434a50c vm: fix invocation stack checks
It should be done on every new context push.
2020-10-15 16:20:34 +03:00
Roman Khimov
fe0ec91636 vm: optimize reversing items on the stack
Before:
BenchmarkOpcodes/REVERSE3/null-8                   10000               335 ns/op
BenchmarkOpcodes/REVERSE3/integer-8                10000               355 ns/op
BenchmarkOpcodes/REVERSE3/big_bytes-8              10000               344 ns/op
BenchmarkOpcodes/REVERSE4/null-8                   10000               353 ns/op
BenchmarkOpcodes/REVERSE4/integer-8                10000               336 ns/op
BenchmarkOpcodes/REVERSE4/big_bytes-8              10000               324 ns/op
BenchmarkOpcodes/REVERSEN/5/null-8                 10000               350 ns/op
BenchmarkOpcodes/REVERSEN/5/integer-8              10000               358 ns/op
BenchmarkOpcodes/REVERSEN/5/big_bytes-8            10000               351 ns/op
BenchmarkOpcodes/REVERSEN/1024/null-8              10000            982413 ns/op
BenchmarkOpcodes/REVERSEN/1024/integer-8                   10000            994926 ns/op
BenchmarkOpcodes/REVERSEN/1024/big_bytes-8                 10000            992951 ns/op

After:
BenchmarkOpcodes/REVERSE3/null-8                   10000               241 ns/op
BenchmarkOpcodes/REVERSE3/integer-8                10000               255 ns/op
BenchmarkOpcodes/REVERSE3/big_bytes-8              10000               249 ns/op
BenchmarkOpcodes/REVERSE4/null-8                   10000               249 ns/op
BenchmarkOpcodes/REVERSE4/integer-8                10000               267 ns/op
BenchmarkOpcodes/REVERSE4/big_bytes-8              10000               292 ns/op
BenchmarkOpcodes/REVERSEN/5/null-8                 10000               337 ns/op
BenchmarkOpcodes/REVERSEN/5/integer-8              10000               327 ns/op
BenchmarkOpcodes/REVERSEN/5/big_bytes-8            10000               293 ns/op
BenchmarkOpcodes/REVERSEN/1024/null-8              10000              5414 ns/op
BenchmarkOpcodes/REVERSEN/1024/integer-8                   10000              5487 ns/op
BenchmarkOpcodes/REVERSEN/1024/big_bytes-8                 10000              5609 ns/op
2020-10-15 16:19:59 +03:00
Roman Khimov
e9a8e957f8
Merge pull request #1488 from nspcc-dev/fix/compiler
compiler: fix manifest method offset
2020-10-14 15:12:57 +03:00
Evgenii Stratonikov
1f2d76a1c2 compiler: fix manifest method offset
While optimizing jumps, old offsets should be compared
with the method offset before optimization, not with
the constantly changing value.
2020-10-14 15:04:33 +03:00
Roman Khimov
99e0e346c6
Merge pull request #1476 from nspcc-dev/fix/verify
core: allow to invoke `verify` of native contracts
2020-10-14 12:49:01 +03:00
Roman Khimov
7808ab2dde
Merge pull request #1479 from nspcc-dev/examples/deploy
examples: add _deploy usage examples
2020-10-14 12:32:21 +03:00
Evgenii Stratonikov
aee02ff2e3 core: allow to invoke verify of native contracts 2020-10-14 11:44:27 +03:00
Roman Khimov
e5048b771e
Merge pull request #1486 from nspcc-dev/fix-empty-discovery-pool
Fix empty discovery pool
2020-10-13 19:23:25 +03:00
Anna Shaleva
f8d5c40928 compiler: do not DROP return value with type assertion
The same problem as with IF. Example:

```
func foo() interface{} {
    ...
}

func Main() int{} {
   return foo().(int)    <--- panic here
}
```
2020-10-13 19:14:44 +03:00
Anna Shaleva
dbce3c9a19 compiler: do not DROP unary expression value inside IF stmt
We dropped values from such calls because they where marked as unused
(consequently, were followed by DROP instructions). Example:

if !foo() {    <--- panic here
    ...
}

This commit prevents the following runtime error during script execution:
```
"error encountered at instruction ** (NOT): runtime error: invalid memory address or nil pointer dereference"

```
2020-10-13 19:14:44 +03:00
Anna Shaleva
fe1f0a7245 core: introduce CheckReturnState constants
At the moment we should have 3 possible options to check return state
during vm context unloading:
	* no check
	* ensure the stack is empty
	* ensure the stack is not empty

It is necessary to distinguish them because new _deploy method shouldn't
left anything on stack. Example: if we use _deploy method before some
ordinary contract method which returns one value. Without these changes
the contract invocation will fail due to 2 elements on stack left after
invocation (the first `null` element is from _deploy, the second element
is return-value from the ordinary contract method).
2020-10-13 19:14:44 +03:00