Roman Khimov
aab18c3083
stackitem: introduce Convertible interface
...
We have a lot of native contract types that are converted to stack items
before serialization, then deserialized as stack items and converted back to
regular structures. stackitem.Convertible allows to remove a lot of repetitive
io.Serializable code.
This also introduces to/from converter in testserdes which unfortunately
required to change util tests to avoid circular references.
2021-07-19 15:42:42 +03:00
Roman Khimov
fbe8bd2d9c
stackitem: limit deserialized arrays/maps
...
See neo-project/neo#2531 , even though they use MaxStackSize there resulting
element is not valid unless it has <=MaxArraySize elements.
2021-07-19 15:42:42 +03:00
Roman Khimov
654c4a6589
stackitem: properly pass allowInvalid on binary deserialization
...
Otherwise DecodeBinaryProtected() is broken for arrays/maps.
2021-07-19 15:42:41 +03:00
Evgeniy Stratonikov
8fdc7e32f5
stackitem: cache serialized results in EncodeBinary
...
```
name old time/op new time/op delta
EncodeBinary-8 8.39ms ± 1% 0.05ms ±21% -99.44% (p=0.000 n=10+9)
name old alloc/op new alloc/op delta
EncodeBinary-8 2.24MB ± 0% 0.33MB ± 0% -85.29% (p=0.000 n=9+10)
name old allocs/op new allocs/op delta
EncodeBinary-8 65.6k ± 0% 0.0k ± 0% -99.95% (p=0.000 n=10+10)
```
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2021-07-13 11:06:19 +03:00
Evgeniy Stratonikov
17a3f17c74
stackitem: use byte-slice directly during encoding
...
```
name old time/op new time/op delta
EncodeBinary-8 10.6ms ± 1% 8.4ms ± 1% -20.94% (p=0.000 n=9+10)
name old alloc/op new alloc/op delta
EncodeBinary-8 1.64MB ± 0% 2.24MB ± 0% +36.18% (p=0.000 n=8+9)
name old allocs/op new allocs/op delta
EncodeBinary-8 131k ± 0% 66k ± 0% -49.98% (p=0.000 n=10+10)
```
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2021-07-13 11:06:18 +03:00
Roman Khimov
5a9efcc654
stackitem: rework error handling
...
Return good named errors everywhere, export appropriate constants, make
errors.Is() work.
2021-07-07 00:18:00 +03:00
Roman Khimov
0de949b575
stackitem: remove Item/StackItem from function names
...
They're useless in a package named 'stackitem', make this package a bit more
user-friendly.
2021-07-06 19:56:23 +03:00
Roman Khimov
b9ff07f32c
stackitem: add limit to serialized items
...
Standard binary serialization/deserialization is mostly used in VM to put/get
elements into/from storage, so they never should exceed MaxSize (otherwise one
won't be able to deserialize these items).
This patch leaves EncodeBinaryStackItem unprotected, but that's a streaming
interface, so it's up to the user of it to ensure its appropriate use (and our
uses are mostly for native contract's data, so they're fine).
2021-07-06 19:34:02 +03:00
Roman Khimov
8472064bbc
stackitem: refactor serialization code, add explicit context
2021-07-06 19:32:52 +03:00
Roman Khimov
1b7b7e4bec
stackitem: don't overwrite error when serializing Item
...
We must get out as quickly as possible.
2021-07-06 17:51:46 +03:00
Roman Khimov
6879cbcdcc
stackitem: properly detect recursive references during serialization
...
If we're done with element it no longer can lead to recursion error, so fix
cases like `[arr, arr]` where we have two copies of `arr` trigger this error
for no good reason (there is no recursion there).
2021-07-06 17:10:31 +03:00
Evgeniy Stratonikov
8d67a03aec
stackitem: fix Buffer deserialization
...
Fix incorrect application log for transaction in N3 testnet
8eb4076f1f1c07e693eda7e810779488a2d2b50aba9b727fd237cbc3adbec9e9
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
2021-06-29 11:39:55 +03:00
Evgenii Stratonikov
8c22d27acc
state: allow to encode AppExecResult with recursive items
...
1. Encode them to a special type, decode to `nil`.
2. `Interop` can be encoded in JSON, this info should also be preserved.
2020-12-18 13:04:31 +03:00
Roman Khimov
0120a8f239
stackitem: limit buffer/bytearray reads upon deserialization
...
This is not the way it's done in C#, but that's the most sensible approach to
me.
2020-10-07 23:08:20 +03:00
Roman Khimov
64e9775707
vm/stackitem: limit reads for bigint values
...
They can't exceed 33 bytes.
2020-10-07 23:07:10 +03:00
Anna Shaleva
29f1e646ed
vm: fix stackitem serialisation
...
We're able to serialise Buffer stackitem, but can not deserealise it
which leads to errors. Fixed.
2020-07-06 15:04:19 +03:00
Evgenii Stratonikov
a980cac0b3
stackitem: support Null item (de-)serialization
...
It's binary representation contains just type (AnyT).
2020-06-19 11:38:56 +03:00
Anna Shaleva
7ca2807875
vm/encoding: move bigint from vm to encoding package
2020-06-08 13:27:13 +03:00
Anna Shaleva
783f5ecb01
vm: move StackItem to a separate package
...
closes #912
2020-06-08 13:27:08 +03:00
