multiversx-chain-vm 0.23.1

MultiversX VM implementation and tooling
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

pub use crate::chain_core::types::Address;
pub use crate::chain_core::types::CodeMetadata as VMCodeMetadata;
pub use crate::chain_core::types::EsdtLocalRole;
pub use crate::chain_core::types::EsdtLocalRoleFlags;
pub use crate::chain_core::types::H256;
pub use crate::chain_core::types::TokenType as VMTokenType;

pub type RawHandle = i32;

use num_bigint::BigUint;
use num_traits::Zero;

/// Helper function to quickly encode a u64 value, according to the MultiversX codec format.
pub fn top_encode_u64(value: u64) -> Vec<u8> {
    top_encode_big_uint(&BigUint::from(value))
}

/// Helper function to quickly encode a BigUint value, according to the MultiversX codec format.
pub fn top_encode_big_uint(value: &BigUint) -> Vec<u8> {
    if value.is_zero() {
        Vec::new()
    } else {
        value.to_bytes_be()
    }
}

pub(crate) fn top_decode_u64(bytes: &[u8]) -> u64 {
    BigUint::from_bytes_be(bytes).try_into().unwrap()
}