ink_macro/
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 ink_codegen::generate_code;
16use ink_ir::{
17    SelectorMacro,
18    marker::{
19        SelectorBytes,
20        SelectorId,
21    },
22};
23use proc_macro2::TokenStream as TokenStream2;
24use syn::Result;
25
26pub fn generate_selector_id(input: TokenStream2) -> TokenStream2 {
27    match generate_selector_id_or_err(input) {
28        Ok(tokens) => tokens,
29        Err(err) => err.to_compile_error(),
30    }
31}
32
33pub fn generate_selector_id_or_err(input: TokenStream2) -> Result<TokenStream2> {
34    let selector = SelectorMacro::<SelectorId>::try_from(input)?;
35    Ok(generate_code(&selector))
36}
37
38pub fn generate_selector_bytes(input: TokenStream2) -> TokenStream2 {
39    match generate_selector_bytes_or_err(input) {
40        Ok(tokens) => tokens,
41        Err(err) => err.to_compile_error(),
42    }
43}
44
45pub fn generate_selector_bytes_or_err(input: TokenStream2) -> Result<TokenStream2> {
46    let selector = SelectorMacro::<SelectorBytes>::try_from(input)?;
47    Ok(generate_code(&selector))
48}