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use syn::{DeriveInput, Meta};

pub fn changes(ast: &DeriveInput) -> bool{
    ast.attrs.iter()
        .find(|attr| attr.parse_meta().ok().map(|meta| match meta {
            Meta::Path(ref path) if path.is_ident("changes") => true,
            _ => false,
        }).unwrap_or(false)).is_some()
}

pub fn autochanges(ast: &DeriveInput) -> bool{
    ast.attrs.iter()
        .find(|attr| attr.parse_meta().ok().map(|meta| match meta {
            Meta::Path(ref path) if path.is_ident("autochanges") => true,
            _ => false,
        }).unwrap_or(false)).is_some()
}