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use move_binary_format::errors::PartialVMResult;
use move_vm_runtime::native_functions::NativeContext;
use move_vm_types::{
gas_schedule::NativeCostIndex,
loaded_data::runtime_types::Type,
natives::function::{native_gas, NativeResult},
pop_arg,
values::Value,
};
use sha2::{Digest, Sha256};
use sha3::Sha3_256;
use smallvec::smallvec;
use std::collections::VecDeque;
pub fn native_sha2_256(
context: &mut NativeContext,
_ty_args: Vec<Type>,
mut arguments: VecDeque<Value>,
) -> PartialVMResult<NativeResult> {
debug_assert!(_ty_args.is_empty());
debug_assert!(arguments.len() == 1);
let hash_arg = pop_arg!(arguments, Vec<u8>);
let cost = native_gas(
context.cost_table(),
NativeCostIndex::SHA2_256,
hash_arg.len(),
);
let hash_vec = Sha256::digest(hash_arg.as_slice()).to_vec();
Ok(NativeResult::ok(
cost,
smallvec![Value::vector_u8(hash_vec)],
))
}
pub fn native_sha3_256(
context: &mut NativeContext,
_ty_args: Vec<Type>,
mut arguments: VecDeque<Value>,
) -> PartialVMResult<NativeResult> {
debug_assert!(_ty_args.is_empty());
debug_assert!(arguments.len() == 1);
let hash_arg = pop_arg!(arguments, Vec<u8>);
let cost = native_gas(
context.cost_table(),
NativeCostIndex::SHA3_256,
hash_arg.len(),
);
let hash_vec = Sha3_256::digest(hash_arg.as_slice()).to_vec();
Ok(NativeResult::ok(
cost,
smallvec![Value::vector_u8(hash_vec)],
))
}