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Add check for byte serialization

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NatoliChris 2018-10-02 10:36:58 +10:00
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specs/simpleserialize.md
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@ -110,6 +110,10 @@ For general `byte` type:
2. Append the value to the length and return: ``[ length_bytes ] + [ 2. Append the value to the length and return: ``[ length_bytes ] + [
value_bytes ]`` value_bytes ]``
| Check to perform | Code |
|:-------------------------------------|:-----------------------|
| Length of bytes can fit into 4 bytes | ``len(value) < 2**32`` |
```python ```python
byte_length = (len(value)).to_bytes(4, 'big') byte_length = (len(value)).to_bytes(4, 'big')
return byte_length + value return byte_length + value
@ -218,9 +222,9 @@ return deserialized_list, new_index
## Implementations ## Implementations
| Language | Implementation | Description | | Language | Implementation | Description |
|:--------:|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------| |:--------:|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------|
| Python | [ https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py ](https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py) | Beacon chain reference implementation written in Python. | | Python | [ https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py ](https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py) | Beacon chain reference implementation written in Python. |
| Rust | [ https://github.com/sigp/lighthouse/tree/master/ssz ](https://github.com/sigp/lighthouse/tree/master/ssz) | Lighthouse (Rust Ethereum 2.0 Node) maintained SimpleSerialize. | | Rust | [ https://github.com/sigp/lighthouse/tree/master/ssz ](https://github.com/sigp/lighthouse/tree/master/ssz) | Lighthouse (Rust Ethereum 2.0 Node) maintained SSZ. |
| Nim | [ https://github.com/status-im/nim-beacon-chain/blob/master/beacon_chain/ssz.nim ](https://github.com/status-im/nim-beacon-chain/blob/master/beacon_chain/ssz.nim) | Nim Implemetnation maintained SimpleSerialize. | | Nim | [ https://github.com/status-im/nim-beacon-chain/blob/master/beacon_chain/ssz.nim ](https://github.com/status-im/nim-beacon-chain/blob/master/beacon_chain/ssz.nim) | Nim Implementation maintained SSZ. |
| Rust | [ https://github.com/paritytech/shasper/tree/master/util/ssz ](https://github.com/paritytech/shasper/tree/master/util/ssz) | Shasper implementation of SSZ maintained by ParityTech. | | Rust | [ https://github.com/paritytech/shasper/tree/master/util/ssz ](https://github.com/paritytech/shasper/tree/master/util/ssz) | Shasper implementation of SSZ maintained by ParityTech. |