zink/
lib.rs

1//! Zink library for developing smart contracts for blockchains.
2
3#![no_std]
4
5#[cfg(not(target_family = "wasm"))]
6extern crate alloc;
7
8mod asm;
9mod event;
10pub mod ffi;
11pub mod primitives;
12pub mod storage;
13pub use self::{asm::Asm, event::Event};
14pub use storage::{DoubleKeyMapping, Mapping, Storage, TransientStorage};
15pub use zink_codegen::{assert, external, revert, storage, transient_storage, Event, Storage};
16
17#[cfg(feature = "abi-import")]
18pub use zink_abi_macro::import;
19
20/// Generate a keccak hash of the input (sha3)
21#[cfg(not(target_family = "wasm"))]
22pub fn keccak256(input: &[u8]) -> [u8; 32] {
23    use tiny_keccak::{Hasher, Keccak};
24    let mut hasher = Keccak::v256();
25    let mut output = [0; 32];
26    hasher.update(input);
27    hasher.finalize(&mut output);
28    output
29}
30
31/// Convert bytes to ls bytes
32#[cfg(not(target_family = "wasm"))]
33pub fn to_bytes32(src: &[u8]) -> [u8; 32] {
34    use alloc::vec::Vec;
35    let mut bytes = [0u8; 32];
36    let ls_bytes = {
37        src.iter()
38            .cloned()
39            .rev()
40            .skip_while(|b| *b == 0)
41            .collect::<Vec<_>>()
42            .into_iter()
43            .rev()
44            .collect::<Vec<_>>()
45    };
46
47    bytes[(32 - ls_bytes.len())..].copy_from_slice(&ls_bytes);
48    bytes
49}
50
51// Panic hook implementation
52#[cfg(target_arch = "wasm32")]
53#[panic_handler]
54fn panic(_info: &core::panic::PanicInfo) -> ! {
55    loop {}
56}
zink/lib.rs

zink/
lib.rs
