kal_derive/
lib.rs

1use derive_command::actual_derive_command;
2use derive_transform_hint_provider::actual_derive_transform_hint;
3use proc_macro::TokenStream;
4use syn::{parse_macro_input, DeriveInput};
5
6mod common;
7mod derive_command;
8mod derive_transform_hint_provider;
9
10/// Derive Command trait from kal for a struct or an enum.
11#[proc_macro_derive(Command, attributes(command, argument))]
12pub fn derive_command(item: TokenStream) -> TokenStream {
13    let derive_input = parse_macro_input!(item as DeriveInput);
14
15    match actual_derive_command(derive_input) {
16        Ok(stream) => stream,
17        Err(error) => TokenStream::from(error),
18    }
19}
20
21#[cfg(feature = "lex")]
22/// Derive TransformHintProvider trait from kal for a struct or an enum.
23#[proc_macro_derive(TransformHintProvider, attributes(command, argument))]
24pub fn derive_transform_hint(item: TokenStream) -> TokenStream {
25    let derive_input = parse_macro_input!(item as DeriveInput);
26
27    match actual_derive_transform_hint(derive_input) {
28        Ok(stream) => stream,
29        Err(error) => TokenStream::from(error),
30    }
31}