ink_env/call/selector.rs
1// Copyright (C) Use Ink (UK) Ltd.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use derive_more::From;
16
17/// The function selector.
18#[derive(
19 Default, Debug, Copy, Clone, PartialEq, Eq, From, scale::Decode, scale::Encode,
20)]
21pub struct Selector {
22 /// The 4 underlying bytes.
23 bytes: [u8; 4],
24}
25
26impl Selector {
27 /// Creates a selector directly from 4 bytes.
28 pub const fn new(bytes: [u8; 4]) -> Self {
29 Self { bytes }
30 }
31
32 /// Returns the underlying bytes of the selector.
33 pub const fn to_bytes(self) -> [u8; 4] {
34 self.bytes
35 }
36}