polished-css-macros 0.1.0

Procedural macros which support the development of a library crate `polished-css`.
Documentation 
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use syn::{Data, DataEnum, DeriveInput, Fields, Type};

pub fn get_tuple_struct_field_type(ast: &DeriveInput) -> &Type {
    match &ast.data {
        Data::Struct(data) => {
            match &data.fields {
                Fields::Unnamed(fields) => {
                    if fields.unnamed.len() == 1 {
                        &fields.unnamed[0].ty
                    } else {
                        panic!("This is supposed to be tuple-struct with a single-field.");
                    }
                }
                _ => {
                    panic!("This struct doesn't have any unnamed fields!");
                }
            }
        }
        _ => {
            panic!("The input data is not a struct!");
        }
    }
}

pub fn get_data_enum(ast: &DeriveInput) -> &DataEnum {
    match &ast.data {
        Data::Enum(data) => data,
        _ => panic!("The provided data is not an enum"),
    }
}